Wpf combobox default selected item And the instance in memory containing your SelectedItem is not the same instance in memory as one of the items in your ItemsSource. – Istvan Heckl. TemplateBinding does not work for SelectedItem in custom control extending ComboBox. 0 question (WinForms) I have set of items in ComboBox and non of them selected. – Tri Q Tran. Removing selected items (highlighted) from DropDown i am using the below code for displaying num in ComboBox, but the default text 3 is not displaying. Note that my datacontext is set to self, so i have confirmed that data binding is happening properly by adding a checkbox. When InitializeComponent is called, it parses the XAML which sets the SelectedItem binding. When initially creating the list, I set a particular object's IsSelected property to true, with the expectation that this item will be selected when the ComboBox is initially shown. Children. I am using an ItemTemplate to specify the formatting of the DateTime in the list. Combobox default value for new item. However, because the SelectedValuePath of this RadComboBox is set to agency phone, the SelectedValue is set to the Phone property of the Agency business object. The selected item in the combobox textfield will still show up highlighted with the light grayish brush I want to get rid of. Key == desiredKey); Programmatically set selected item in a WPF combobox. If you want to retrieve the value of the combobox after it is changed, you can use the When you set the IsEditable=True property on a ComboBox the selected item in the selection area will not be rendered used item's DataTemplate. Content,ElementName=cmbbox_years}" Else for custom object below code will work I am having trouble with the ComboBox's selected item color By default, when you select an item from the ComboBox, it's Black. By setting IsTextSearchEnabled to true, the comboBox dropdown will jump to whatever the first matching item is. – BionicCode. However when ComboBoxItem including non-plain text content is selected, the foreground remains white after closing the dropdown/popup. By default the selection of items in ComboBoxAdv is single selection. First the default visibility should be specified in the style. Reset to default 27 While I like the accepted answer the problem I have with it is the text box presenter was completely missed and thus you can select and stylize things but I wonder what WPF team were thinking when designing ComboBox. ComboBoxDemo { public partial class MainWindow : Window, INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public MainWindow() { Then add a property for the currently selected item which notifies on changes: I only wanted to prevent the default selection of the first item. So lets assume I have collection of 10 strings showing in my ComboBox. Update. The value of the Process property of the default BrowserInstance object that you add if there is no the ComboBox selected item is blinking (sometimes it's empty, sometimes not). Setting a Default value in XAML in combobox Set a default value to combobox in WPF. 2k 1 1 gold WPF Combo Box Data Binding Selected Item. ToolTip="{Binding Path=SelectedItem. Custom Control for a ComboBox with Default Element. The SelectionChanged. This means that the cpuCount variable is initialized right after the form is created, thus far before you have the chance to change the selected item with your mouse. If you are talking about the items in the combobox popup list, then it should also be "non editable" unless you have changed the data template of your combo box to contain a list of textboxes which will cause the list to allow each item to be editable. I can't understand the reason. Hot Network Questions Turning a microwave into a transceiver Why might an operating system require a restart after N failed login attempts? When going to set the text property for a ComboBox. I have the following That worked well and I could use the Watermark in the WPF ComboBox where I bound InstrumentModelID to the SelectedValue property of the ComboBox. There are two solutions: A better Your SelectedItem binding isn't working because WPF compares the SelectedItem to the items in the ItemsSource by the . I take the whole selected item with the below command (I have removed the other user details from the object for ease): I'm having troubles using a WPF ComboBox in the following scenario: ViewModel. When going to set the text property for a ComboBox. What you want is ComboBox. Also I do not want this value to be editable. Design page shows the given text. This control is also better suited for editing. SelectedItem; Expander expander = new Expander { Header = this. You must override the default Style for the ComboBoxItem. In order to select multiple items in ComboBoxAdv, enable the AllowMultiSelect property and select those multiple items from the drop down list. Whenever you want then, you can re-assign that value to the ComboBox. DisplayMemberPath is C# & . ; DisplayMemberPath property that defines a default template that describes how to display the data objects. Something like: <DataTemplate DataType="{x:Type MyAssembly:Customer}"> <StackPanel> <TextBlock Text="{Binding Name}" /> </StackPanel> </DataTemplate> Can I select another Template for the selected item in a ComboBox? Solution I am using MVVM in a WPF application with C# and got a problem binding a ComboBox correctly. Share. Setting a default selected item in ComboBox in WPF MVVM application. When you select an agency name from the combo box, the SelectedItem property returns the Agency data item that corresponds to the selected Name. So what you have to do is to provide a property for that TextBox with the desired formatted string you want to be displayed Correct. SelectedItem = myItems. Commented May 14, 2015 at 8:49. Setting selected item in C# Combobox. You can chnage the binding mode for SelectedItem to OneWayToSource so that the value in the view model won't be used for setting the selected item: <ComboBox Grid. How do I change the color of the item to White? I cannot seem to modify it. wpf combo box default value. <ComboBox. ItemContainerStyle> Selected item on WPF combobox. How would I go about clearing the selection in an event handler? Reset to default 33 comboBox. XAML : <ComboBox ItemsSource={Binding Path=MyCollection} SelectedItem={Binding Path=MyItem}/> CodeBehind : public List<string> MyCollection {get; set;} public string MyItem {get; set;} If you want to insert text into the selected item, you'll need to use INotifyPropertyChanged Set default value in WPF ComboBox. I am able to bind a list of string with the combobox but I don't know how to set a default value in the combobox. Content = "New content"; // Reference combo box item by name ComboBoxItem item = (ComboBoxItem)this. With below code I'm able to disable a ComboBox within ComboBox but it would not stop user from selecting that disabled ComboBox item. Using IsSynchronizedWithCurrentItem did not work, nor did changing the order of the SelectedItem and ItemsSource bindings. xaml. The event that is fired on change is ComboBox. Provides a ObservableCollection<T>; This collection contains a list of items the user may select. Combobox in c#? 0. Follow How to center align combobox selected item in WPF. Viewed 1k times 0 This question already has answers here: The ComboBox items are just text with default styling, no images or anything else fancy, and are C# classes, not wrapped in ComboBoxItems. Combo box item not initally selected. combobox. Modified 9 years, 8 months ago. You'd have to write your own. CurrentChanged += delegate { SelectedCustomer= (Customer)view. Try using the following code and you will see that the selected item is kept in sync as the user changes the value in the combobox. So SelectedItemFilter = ItemFilters[0]; creates a list of filters and then assign the first one to SelectedItemFilter. However, when I click a button to switch the ObjectInstance to obj2, the ComboBox ItemsSource gets populated correctly in the dropdown, but the SelectedValue is set to Nothing instead of being equal to obj2. Reference. CurrentItem), it will override any SelectedItem binding. But the following code is not working: &lt;ComboBox HorizontalAlignment="Left" Gets or sets currently selected item in the ComboBox. c#; wpf; Reset to default 16 Add a binding to ComboBox. I mean in the If the selected file path doesn't exists in Items i add and select it (this is working). Hot Network Questions If you look on the ComboBox Styles and Templates page on MSDN, you will find the default ControlTemplate for the ComboBox used in WPF. Unfortunately empty item is shown in dropdown list as well. I then select a row from a DataGrid which fires another Create form in which I insert a new record into tbPublications, all good. I do not want the --Select Item-- to appear within the list, only on the combobox itself. Add(expander); } I want to enable/disable a ComboBox based on if there is an item selected in another ComboBox. The string could be used It's the default for any binding you put on ComboBox. How can I do this? <ComboBox WPF ComboBox has a problem where if you're using a default view to represent a collection and that view has a built-in selected value (ICollectionView. item1. Select your combo box. cs file? In case it's primarly about getting the selected item and not about the binding. Especially the ComboBoxes SelectedItem. Towards the end of the method, the currently SelectedItem is nulled. You can just add another ContentPresenter, with different Name, Content bound to CBox 'Text' WPF Ribbon combobox select default item [duplicate] Ask Question Asked 9 years, 8 months ago. Possible duplicate of How to display default text "--Select Team --" in combo box on pageload in WPF? – CynicalSection. When the user specifies a preference from the list, I want to highlight that choice by setting I'm trying to default the Combo Box selected item to index = 0 when the SelectedValue is Null. 1. Why? It's not about 'select nTH item on startup' it's more like select THE ITEM that is sitting there defined as as the initial item and get the combo box updated. In the way from SelectedItem to SelectedProgramTypeCode, there is no Converter, Use the DisplayMemberPath property specify the name of the property you want to display as the text of the combobox items. ReferenceCodeTypeChar, in this case you bind it to a string property. C# - WPF ComboBox not setting default value in Code-behind. So SelectedItemFilter cannot be found in ComboBox items list. WPF ComboboxItem binding. Combobox stores previous valid I cant seem to find a direct method for implementing filtering of text input into a list of items in a WPF combobox. Fill ComboBox Items in WPF C#. Best regards, Alireza But when I select a Customer, I only want to display the Name in the ComboBox. " the setter for that property doesn't get called a second time (thus it retains its value), but of course the ComboBox doesn't show the selected item either. ToString() whenever the selected ComboBox item changes. this doesn't work and Browse is the visualized item. After that the user can select an item, and when they select it there I SelectionChanged event get's fired iand I dow a whole bunch of things on the page based on the dropdown selection. class ViewModel { public ViewModel() { Variables = new List<string> { "A_Variable", "B_Variable" }; SelectedVar = "A_Variable"; //default selected value Hi, I have combobox with three . Hot Network Questions Best way to replace a not yet faild drive Why do evacuations result in so many injuries? In my WPF app I just want to change the background color of the Combo box. GetThingos(); } public ObservableCollection<Thingo> Thingos { get; set; } But upon the button click nothing gets selected in the combobox. "; before InitializeComponent and all should be fine. Follow Combobox WPF template item and selected item. OnItemsChanged and then resets the SelectedItem. When I run the application, each ComboBox has an item selected by default! But wait, there's more: If an item is then removed from the Fields list and at any time added back, the ComboBox has no item selected again. Add a comment | 0 wpf combobox selected item. 2. This property is bound to its corresponding ComboBoxItem's IsSelected property. You can modify the default ControlTemplate to give the control a unique appearance. 2. Run the repo, the ComboBox is displayed with an empty selection. Hot Network Questions I need to select custom item under WPF Combobox by code behind. I'm trying to construct a ComboBox that will display a selected item. Equals() method, which by default compares by reference. Combobox data And because the ComboBox IsSyncronizedWithCurrent property is true by default, the SelectedItem and SelectedValue properties are reset. When I select a colored item, the background of the combobox remains the default color. I'm using . Sorted by: Reset to default 56 You seem to be unnecessarily setting properties on your ComboBox. Modified 5 years, 10 months ago. EDIT: Note that this happens in a sample WPF project. Commented Creating Replacable Placeholder Text in WPF ComboBox. For example: "Spanish" UILanguages languages = new UILanguages(); languages. I have a combo box that I bind to an observable collection, which gets changed (according to company selected) and a large number of companies will have a single account (the items) therefore I want to know what the best way to make the ComboBox set the SelectedItem if there is only 1 item in the ItemsSource, otherwise leave it as null to ensure the user chooses Initially the SelectedItem is null, and thus the Combobox display is blank. DisplayMemberPath to the desired property on the data model, but only when ItemTemplate is not defined. I have a window with a combobox that display some data, I want the user to select a category in this combobox. 4. It would be sweet if the first item is selected by default. Viewed 10k times 9 I have a combo box like this Sorted by: Reset to default 3 Looks like you're looking for the proeprty SelectedValuePath of ComboBox control. Item2. This is because the highlight appearance is implemented in the ControlTemplate (using fixed/static color resources) Change color of Selected-Unfocused ComboBox Item in wpf. SelectedModel}" DisplayMemberPath="Name"></ComboBox> This is the I need same functionality as ComboBox's popup is open and user can select items by mouse. Column="0" ItemsSource="{Binding FrequencyList}" SelectedItem="{Binding SelectedFrequencyList, You can style controls in WPF, basically by altering ComboBox. I was able to get it working by setting a trigger on the Style, but that overrides my custom global style for the combobox. It works fine when the ComboBoxItem contains only text content. 13. it shows the seleceted item as grey in color I'm creating an expander for each combobox item that is selected using this method. For more Yes, the default mode for SelectedValue, SelectedValuePath,SelectedItem properties of a ComboBox areTwoWay, you can refer to Microsoft Learn( SelectedValue, There is a particular item in TaxList "No Tax" which I want to be selected by default in the combo box. OnItemsChanged. WPF ComboBox binding. We display the currently selected item in the ComboBox as part of the Window Title. Wpf combobox selected item not working. The code below displays "--All Models--" as the default item but it is not selectable if you select another item. I implemented ListView where all device are listed. I feel this is the cleanest way if you insist on defining the item collection in WPF using ComboBoxItem. Tim Tim. Follow Setting a default selected item in ComboBox in WPF G'day! I want my WPF ComboBox to display some alternative text when its data-bound selection is null. 6. Try setting Salutation = "Mr. WPF Combo box - Select Item by Tag. Enter event. I mean in the Everything works fine except the second line. SelectedText doesn't make any sense if you are, for example, display icons in there. When the selected item is null, I would prefer the Combobox to display "Select an item" to guide the user to select something from the combobox. I need to set ItemsSource as CompositeCollection where one of the items is defined as specified (doesn't have to be item 0) and set the mentioned item selected on start up. Styling WPF ComboBox items. This TextBox control can display only a String. I was wondering how could I get what Item from menu was chosen. Default}, Path=KeyModifier, Mode=T You can style controls in WPF, basically by altering ComboBox. It's too large to display here, but if you look down the page, you'll see a TextBox control named PART_EditableTextBox which From what I can see, you are calling form. If you use the latter, you cannot do cbType. Register for the event. C# WPF How to modify the ComboBox's selected item's color? 1. DisplayMemberPath is The question is, is it possible to get the ComboBoxItem being stretched even when it's selected using SelectedIndex? Same bug, or feature, happens if SelectedIndex is untouched (-1) and one selects the item using keyboard. 18. It has nothing to do with the value being displayed by the ComboBox. I want to make a ComboBox in WPF that has one null item on the top, when this gets selected, the SelectedItem should be set to null (reset to default state). Improve this answer. comboBox1. I tried implementing a SelectedIndex option in my viewmodel but that didn't work either When you set the IsEditable=True property on a ComboBox the selected item in the selection area will not be rendered used item's DataTemplate. Net 2. There are 3 ways to handle this. public object? SelectedItem { get; set; } The object that is the currently selected item or null if there is no currently selected item. This appears to be the problem: SelectedItem="{Binding Path=Id}" If the "Id" property in the DataContext is not an item in the ItemsSource, SelectedItem will be set to null. Can anybody help me please. Without code behind like, selected item index We also use the ComboBox_SelectionChanged event handler. When ComboBox requests list of filters it gets a different list of filters. The selected item refers to a value being pulled from a database. If you define the ItemsSource in your view model anyway and use IEnumerable<string> , you can bind to SelectedItem directly, since then the item type is already string without any additional code. SelectedItem which is Data Binding Combo Box in C# WPF. How i change Foreground Color of selected wpf combo item. When I close said create form and return to my ComboBox form I am clearing and re-reading in the one new item to my ObservableCollection, returning The underlying problem is in the implementation of Selector. Once the key is selected, have them enter their value input into the textbox and press enter or a button, then set the value to the selected key. 0 WPF MVVM ComboBox with default selected value. XAML I am using a ComboBox in my WPF application and following MVVM. but in my view selected item in ComboBox is the the value which I selected. Here's me code: Create a class containing both your list of items and the selected item: public class ViewModel { public string[] Items { get; set; } public string SelectedItem { get; set; } } Initialize it in code behind and set it as DataContext: I you are using the MVVM pattern, then add a property SelectedHexColor to your view model and let the view model search the correct solid color brush in your list from which the color brush combobox is being populated and update the SelectedBrush property of your view model to which the selected item of the combobox is bound. 4 WPF Combobox SelectedIndex Not Working. AFAIK, this is default behavior of all Selector descendants, which is rather obvious: settings SelectedItem isn't only a data changing, this also should lead to some visual consequences like generating an item container and re-drawing item (all those things manipulate ItemsSource). SelectedItem and then access your object. Selected ComboBox -> Property -> Text : "--Select--". MyCombo. Thanks What I want to be able to do is return the selected item from these combo boxes. So, first time opening the defult combo box is empty, next time is their last time name selection. ToolTip, RelativeSource={RelativeSource Self}}" I Switched my ComboBox with a Menu, but in Menu, "SelectedItem" does not exist like in ComboBox. This article will teach you how to use data binding with ComboBoxes. Waiting for your answers. I have combo box in wpf application. Workaround is probably to open the ComboBox programmatically in the beginning of app, which is rather ugly. In the image below you can see the problem and what I want to achieve. I have bind the combo box with wvvm architecture. WPF Combo Box Data Binding Selected Item. I edited the question with my edited code following your suggestions. If it's the same instance, maybe it's only a simple thing such as setting the BindingMode to TwoWay: SelectedItem="{Binding Path=CustomSettingProperty,Mode=TwoWay}" I try to do a template for a combobox. Access and modify elements with ItemsControl. How to display "default" selected item - Combobox C# WPF. combo. I am binding a combobox in the WPF using MVVM pattern. Now I want that by default "A" should come as default value. Default selected value in ComboBox I want to write XAML template of a combobox to increase the spaces/padding between items. ComboBox to select first Value when created. But the items are dynamically added (so I could listen on ItemsChanged and set the style each time, but that is very ugly). Timing. So when you set the selected item, if the items in the combo box are not the same objects as the ones in the incoming VM, they won't Set the value of the SelectedVar property to "A_Variable" or whatever value in the Variables collection that you want to select in your view model class:. On selectionchanged my list updated but combo box item not refresh. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I've changed my default item template, but now they won't appear in the selected value area. There is a list of strings which I want to show in my ComboBox. I think I'm almost there, but just need to complete the final step. FindName("item1"); // Using FindName method To find item by its content you can use UI automation. We also use the ComboBox_SelectionChanged event handler. How about setting the SelectedIndex to 0 in the Loaded event in code behind of the ComboBox? Since you always want to set the selected item to the first item, this will be simple enough. I ended up using a completely different approach by adding the items to the combo-box one by one. Since you bind the item to model objects the ComboBox. WPF ComboBox SelectedItem Binding Doesn't Work. The ComboBox contains the names "Joe" and "Steve" and "Steve" is selected by default. It's one or another. what happens now is, when I set the original datasource, the logic for selection is executed due to SelectionChanged event being I am writing some programm where is possible to select device and later configure it. Item1 Item2 Item3 I want by default second item selected when it is load. Setting the first item as selected item in WPF Combo box. Sorted by: Reset to default 15 The trick here is that when you have to bind to the SelectedItem on an ItemControl bound to XML, the selected item itself is an XmlElement, and you have to use XPath to get to the needed element/attribute. Here I use the CollectionView to detect the currently selected item. how can i write item template for a selected item of combo box in wpf. for example, if you are using a backing list of "People Trying to show a label only when a certain item in a combo is selected. Well I have a list of names which has "A","B","C" and "D". - RWS/Multiselect-ComboBox IsEditable is true (default) Multiple items can be selected/unselected from the Dropdown Menu list Tried to do some searching on this, but couldn't find exactly what I needed. private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) { var itemIndex = combobox. To change only the color of the selected item you can implement some kind of workaround and change the ForeColor each time the DropDown is opened or closed. [edit] I just read that you want to If the item that is selected is not the same instance that is contained in the List, you must override Equals() in the CustomObject to let the ComboBox know that it is the same object. Now My combo box loads the list but never shows the first item at selected Item. Using CollectionView to detect current selected item. This is false by default. The ItemsSource Binding "SortByOptions" is an ObservableCollection of I have a WPF/MVVM (using MVVM-Light) app setup with a ComboBox that is inside a DataTemplate. After I change the combobox value, I want to do something to the selected item, which should be the item whose combobox is just interacted with. there may or may not be a text item. 0 ComboBox not autoselecting initial value. But here is an ugly hack that seems to work: First, give your ComboBox an x:Name. I'd recommend setting the SelectedValuePath to the property on your object containing the string, Don't bind to both SelectedItem and SelectedIndex. For example, if the items in the ComboBox are Sorted by: Reset to default -1 myCmb. Add( Sorted by: Reset to default -1 myCmb. For example:--Select Item--Item1. – This is my combo-box. here's my code. It's working partially. ItemTemplate. Without code behind like, selected item index TECHNOLOGIES ; FORUMS; WPF Combobox item selected by default. I mean in the When selecting an item from combo box the selection is updated into the model and also into the view, so it is working as expected but when the page is first loaded even if the "SelectedComboBoxOptionIndex" and "SelectedItemOption" are being called and their value updated the view of the page is not updated and the empty string is being shown into the <UserControl. 39. Selection become only by pressing mouse button. I get the datasource, I set the dropdown with default "select". WPF combobox - select the first item as default. WPF - Formatting a ComboBox's displayed item. Text property manually, however it is changed to SelectedItem. Reset to default 27 While I like the accepted answer the problem I have with it is the text box presenter was completely missed and thus you can select and stylize things but Combo box default value. 3. WPF ComboBox How to bind the selected item in code? 0. This solved my problem: After populating the combobox list, set the selected index to -1, like this: comboBox1. 'Up' and 'Down' only highlights items in popup, but SelectedItem will be changed only by pressing Enter or mouse clicking. I also want the user to be able to manually specify a start time not in the list, like 8:27 AM or 9:30 PM. When I run this app, the ComboBox starts with an empty display because Foo. Modified 12 years, Reset to default 30 Use ItemContainerStyle instead of ItemTemplate: WPF Combo Box Style. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? You want to handle the ComboBox. How can I deal with that so I will get also all the Workers, and also the item - "Select" as the first item of the combobox? Thanks a lot :) My aim is to set the combo box ina way that when they open next time the app, theire previous name selection is set as the default name in the combo box. sort of like the way, some text boxes contain gray text such as "enter user name" Any ideas on how to do this? Edit: My problem is that after I select a item in the ComboBox, the first item or "default" item of the combobox stays empty but if I click the combobox the values beneath show up are selectable etc. SelectionChangeCommitted. As Andy pointed out in comments, your SelectedValue and WPF ComboBox has a problem where if you're using a default view to represent a collection and that view has a built-in selected value (ICollectionView. e. Looks like the SelectedItem is bound wrong. But when run the application the given text disappeard and the initial index value of a comboBox item appeared, Which is from the DataSource. My xaml code as follow: i have a c# WPF project that contains a combobox. MainWindow. I already tried to use INotifyPropertyChanged. ListCollectionView view = (ListCollectionView)CollectionViewSource. To use the selected item later, you can cast the variable back to the appropriate type. Please Kindly help. CurrentItem), it will override any This topic describes the styles and templates for the ComboBox control. I wanted the combobox to be empty, but you could stil use the drop down list for a list value. WPF - MVVM - ComboBox SelectedItem. 0. You can select the item or get the index of the selected item by using the (You should make sure that there is at least one item in the ComboBox) Share. First, as you've already The default color for the foreground is black, and I want to set selected item foreground to white when opening the dropdown/popup. <ComboBox DisplayMemberPath="Value" SelectedValuePath="Key" /> Thus if you have an item { Key = 2, I have a ComboBox in WPF whose ItemsSource is set to a list programmatically. WPF Unable to set Selected Item of a Combo box. Creating Replacable Placeholder Text in WPF ComboBox. cs file? Selection. Each item can be hovered by mouse, but not selected. Combobox Binding MVVM WPF SelectedValue. You can do this one of two ways: Do it through the designer. Ask Question Asked 12 years, 11 months ago. EDIT. SelectedItem not shown in ComboBox. All values are good except second and fourth element (SomeCondition You misundestood the purpose of SelectedValue. Screenshots If applicable, add screenshots to help explain your problem. – Regarding Fred's comment above, it really depends if the ComboBox was filled by just adding a ComboBoxItem-either in XAML or dynamically-or if it was filled by binding to the ItemsSource. I then set the selected item to previously added value (using the Text property). What is more, on load, the value of Salutation (to which you are binding) is actually still null. But even with that it won't work because the binding on the trigger is comparing a SelectedValue, a ComboBoxItem object with a string object and Binding to the selected property of a combobox is fairly simple. SelectedName. <ComboBoxItem Content="Coffie" I've been stuck on this problem for hours what I want to do is actually quite simple - set a default selected item in a ComboBox (I'm using the MVVM pattern). No need to set it explicitely to black. However, with this solution when I set the default By default, a ComboBox should indeed select it's first item. WPF combobox binding null value. Wiring that up is not the issue; rather, I want the user to be presented with the same formatted DateTime as the Correct. The following code snippet sets the IsSelected property of a ComboBox. The window show the combobox, starting with no selection, then the user choose a item, and it's set, but if the user try to change to other item, nothing works, it keeps the original selected item. What would be the naive approach to overcome this problem (when data template is used in 2 places: for list of items and for selected item when list is hidden)?ContentControl with styling seems a common hack to deal with multiple templates (instead of crappy idea with DataTemplateSelector), but I really hate You can set the ComboBox. It should be bound to a property of type Foo. cs. How can I bind the background of the combo box to change based on the background color of the selected item? Please note ComboBox in main window has another ComboBox as ComboBox Item init (that is decided at run time by DataTemplateSelector). This works just fine for me: public class ViewModel { public ViewModel() { Example_SelectedIndex = 0; //unnecessary since the default value of an int is 0 } private List<string> _Example_Items = new List<string>() { "item 1", "item 2", "item 3" }; public List<string> Example_Items { get { return But when I select a Customer, I only want to display the Name in the ComboBox. In order to keep the view and the model decoupled I would need to create a copy of the enumeration in the ViewModel and code ViewModel to translate between the two I changed the update mode because the default update mode is Propertychanged which will add a new item It seems if the Text binding fires first then everything is ok, but if the Selected Item then it changes back the text. It walks you through the following examples: Displays a string value and binds to a string value, all bindings The IsSelected property of the ComboBox control sets an item as currently selected item in the ComboBox. I don't mean the dropdown, I want is just whatever item is selected a background is set. C# MVVM Combobox. – Sinatr. SelectedIndex = -1; Since the ComboBox items are objects, we can use the object data type to store the selected item. Commented Jan 29, 2010 at 5:53. well I was wrong with a quick glance at the XAML. I want that by default no item is selected. Combo box default value. SelectedValuePath property that specifies the path to the property that is used to determine the value of the SelectedValue property. Prevent WPF I have bound a ComboBox to a list of DateTime values to select a start time for an event. I dont understand why. Using the SelectedIndex. Hot Network Questions Does the 'sonic tank' exist outside Dune II? When I have added a comboBox to the WPF window, how do I add items to the comboBox? Int the XAML code for the design or in NameOfWindow. "hello", as this was already set when the bound items property was changed. I have solved it for myself by just modifying ComboBox template. WPF - add static items to a combo box. Assuming you want to set ToolTip of ComboBox to currently selected item's ToolTip property value, this should fix the problem: ToolTip="{Binding Path=SelectedItem. The ItemTemplate is ok but not the selected item as u can see below: My code: &lt;ComboBox ItemsSource="{Binding CouleursList}" Sorted by: Reset to default 4 Add the ItemContainerStyle to your ComboBox with a HorizontalContentAlignment set to Stretch. Current implementation is just added empty item with such text on index 0 and remove it when user select one of following items. Use the SelectedValuePath property to specify the name of the property you want to use for the SelectedValue of the combobox. NET 4. Problem: Using "SelectionChanged", however, if the user choose the same item as the item is currently being selected then the selection is not changed and therefore this event will not be triggered. For example, if the items in the ComboBox are I have a ComboBox bound to an ObservableCollection of tbPublications which populates as it should. This item can be present at any index in the list (Not necessary first or last item of the list). What you describe is the default behavior of the wpf DataGrid control. That's fine. This happens even if i set explicitly Mode=TwoWay. Items. 2 Different ComboBox Styles with 2 Different ComboBoxItem Styles. EDIT1: The The multi selection combo box is a WPF custom control with multiple item selection capabilities, along with customizable features to group, sort and filter items in the collection. This I'm trying to add a predefined ComboBoxItem into my ComboBox which already has a ItemsSource property set. 8. Models}" SelectedValue="{Binding Repository. Reset to default 4 If you're using WPF 4 you can set the How to remove the Wpf combo box item using C#. XAML: Goal: issue an event when items in a combobox drop down list is selected. When I have added a comboBox to the WPF window, how do I add items to the comboBox? Int the XAML code for the design or in NameOfWindow. If the selected file path exists in Items i want to automatically select it without adding it to the list again. If the DataContext is not set, then initially this will be null. The user shall be able to select either an existing item from the items in the ObservableCollection<T> or add a new item by typing in the In short, you can't set SelectedItem to the value, that is not in ItemsSource. Is there a way to set the FontSize for all items of a ComboBox generally?. example: (Select item) Item 1 Item 2 Item 3 It's possible to do this without modifying How to make WPF ComboBox default selection to blank. However, you are creating a binding of the SelectedValue here, which is by default two-way. This should also fix your default choice issue. I would appreciate if you could help me. Resources> <abv:ComboBox SelectedIndex="0" IsNullable How to display "default" selected item - Combobox C# WPF. Follow default value in wpf combo box. Item3. ComboBox. ComboBox item not taking up horizontal space - WPF. But the only solution I found, is to set the FontSize of the particular ComboBoxItems. Now every time the selected item in the combobox is changed, the source properly gets updated. By default this resolves to the TypeName of the ComboBox's data item, however you can change this by overriding the ToString() method of the data item, or by setting the ComboBox. Later when DataContext is SelectedItem binding is TwoWay by default. Thingos = IProvideThingos. Doing the same is considerably more difficult in WPF, especially when your items are not strings and/or are coming from a binding. The SelectedItem property is a proper member of the ComboBox control. What is wrong with the data trigger ? Error: SelectedIndex is not recognized property &lt;ComboBox x When going to set the text property for a ComboBox. I would like to show a string on combo "Please select item" in that situation. I don't really like the way it makes you use a reference to a part of your model - the enumeration type - in the view, in the ItemsSource param. <StackPanel . Hi, I have combobox with three <comboBoxItem>. I worked around this by deriving a new ComboBox class that overrides OnItemsChanged, saves the current SelectedItem, calls base. ToolTip="{Binding Path=ToolTip}" binds to ToolTip property of current combo box DataContext (object that contains EnumDataItems property). 15. So what you have to do is to provide a property for that TextBox with the desired formatted string you want to be displayed Bind the tooltip to the display property of the selected item in this case i have property name display, if you have declarative ComboBox items then that would be . The Template contains <ContentPresenter x:Name="ContentPresenter" . Combobox not displaying selected item, If I select first item. Please suggest. CurrentItem; }; namespace Wpf. 37. Please Kindly help. NET ListItem's Text property. google wpf combobox selected item color , you will find many answers – ZSH. It has a few text items and a combobox. At least, not with the default template. Xaml: Setting SelectedIndex=1 conflicts withyour binding if SelectedItem with initial null value. I've searched like forever, but didn't find a solution that was The binding you set for your ComboBoxes Foreground prop is looking for a ComboBoxItem typed ancestor in the visual tree, but the item you need is the descendant of the ComboBox. It gives me a runtime exception: Items collection must be empty before using ItemsSource. Binding ComboBox SelectedItem using MVVM. For Simplicity the selected item will just be 1 regardless of wether a new item is added or not. For the ComboBoxItem template, I just modified the default one, so it should be fully functional. I searched for this but almost end up with the ItemsPresenter: &lt;ItemsPresenter x:Name="ItemsPresenter" You misundestood the purpose of SelectedValue. In order to select multiple items in ComboBoxAdv, enable the AllowMultiSelect property and select those I am trying to set the first item in the combobox as the selected item by default. The first obvious reason is that ItemFilters is created on every request. i have several items in the "selection", if i select any of those, then the value is correct (0 for the first item, 1 for the 2nd item and so fourth) how can i add the first item as "all", and if user selects "all" then the value is "-1" ? right now "all" is the first item, so it sets it to "0" value A combobox has the dependency property IsEditable and if set to false, the selected item can not be edited. Set a default value to combobox in WPF. Name dynamically I have a comboxbox that is databound to an observablecollection from my viewmodel. How to set selectedValue to Controls. A solution that did make sense to me is to set SelectedIndex to -1 and reset Text as shown below If you can change the FlatStyle of the combo box to Popup or Flat the color of the selected item will also change when you change the ForeColor. Apr 10 2018 2:55 AM. There is always one item selected. WPF ComboBox Binding : MVVM. It's similar to ASP. SelectedItems type would be this model objects type. Occurs when the selected item has changed and that change is displayed in the ComboBox. The default foreground of the ComboBox is black. Commented Mar 14, 2018 at 18:34. How to change WPF Combobox color to White when no items are selected? Hot Network Questions BRST charge action on fields Find the Smallest Data Type for a Number List of all sequences with certain properties Implicit function theorem without manifolds (Steve Smale article)? A ComboBox with the ItemsSource linked to the Controls property: <ComboBox ItemsSource="{Binding Path=Controls}" SelectedItem="{Binding Path=SelectedControl}" DisplayMemberPath="HeaderTitle" > The problem is that the ComboBox shows the items correctly but when I select an Item it doesn't appear in the ComboBox. GetDefaultView(Customers); view. Clear()-- you get: Operation is not valid while ItemSource is in use. ItemsSource The ComboBox control inherits from the ListControl control. C#. Question: What other event handler(or other ways) I may use to issue an event regardless of WPF Combobox has:. The view model has the expected properties: public ThingoSelectionViewModel : INotifyPropertyChanged { public ThingoSelectionViewModel(IProvideThingos) { this. How to select 1) Dont know why, i always get an item selected when the load the list, and it is always the 1st item the the collection I bind. Set the default value of the ComboBox to "SELL" when the control is first loaded/initialized in a WPF window/user control: <ComboBox x:Name="OrderType" Hi, I bind a list(ObservableCollection) to a ComboBox. The ComboBox control is in many ways like the ListBox control, but takes up a lot less space, because the list of items is hidden when not needed. There are two issues here. The default template includes this: Right-click the ComboBox and select Edit Control Parts (Template) - Edit A Copy. So i gave the ComboBox text in the Form load. This question was asked very well here but that solution didn't work for me at all. I'd like to have a combobox with hardcoded items, but contain a default string. Default text of combobox. If you want it to be implemented in XAML itself, use an EventTrigger for Loaded Event inside the ComboBox and use a Setter to set the property Is the default mode for the SelectedValue, SelectedValuePath,SelectedItem properties of a ComboBox one way? I read in an article that the default mode for the SelectedValue and SelectedItem is two way. Bar is null by default. wpf combobox default selection from itemssource. Name }; dock. WPF Combo Box Binding. Below I get the datasource, I set the dropdown with default "select". The displayed value can be defined by setting ItemsControl. You can WPF ComboBox SelectionChanged event to command not firing. Code Sample: The ListBox contains a few items by default, the last one always being one of the type Add, which if selected, may add a new item and select it by default or select the previously selected item if no new item is added. > that displays SelectedItem string on the CBox Button, or nothing if SelectedIndex is -1 = nothing selected = CBox default value. Thanks for the help. What I As part of my script which to provide a bit of context is a user creation script with a templating feature I export the Selected Item to Json along with the other user details. Selecting an item in a combobox in an MVVM framework. – SnowballTwo. Name dynamically I want to set the FontSize for some ComboBoxes in wpf. DisplayMemberPath to a The ComboBox control. SelectedItem. 5. InformationModel. Set default value in WPF ComboBox. The problem with ComboBox is what you don't want to change template for selected item, see this answer (in fact it looks complicated, but I can't find simpler where you just define own template selector and use it for ComboBox, poke me if you still have problems tomorrow). WPF: Textblock as item in ComboBox: how to center the text of Textblock vertically? 3. I can get the combo box to display the options easily enough, but getting the selected item to display is not working. Since the ComboBox items are objects, we can use the object data type to store the selected item. WPF MVVM ComboBox with default selected value. You can get the selected item without binding it to an extra property. but I want the clicked one to show in the "default/first" place. I have WPF ComboBox containing CheckBox items, and it allows the user to select multiple items. I need the same. Binding a combobox selectedvalue to a data class. 1 You said the ComboBox Items are Objects, while you are trying to set the SelectedValue to a string. ItemContainerStyle> <Style TargetType="ComboBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> </Style > </ComboBox. ComboBoxAdv supports single and multiple selection of items. Any help in disallow/block selection of disabled items would be helpful. I had done something about this in WinForms, where I would use the text APIs to measure all the strings in the combo box, and set the min width to account for that. Ask Question Asked 13 years, 1 month ago. That didn't help, let me also clarify that, the combo box is working and it is sucessfully binding the values to the data context, only problem is it is not displaying the text for its currently selected value, just a blank cell. Hot Network Questions I do not get selected item displayed in ComboBox ever since I have overwritten the default style with this one: <LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1"> I'd like to reset a combobox after every selection is made, to a default text value. A ComboBox compares items by reference when trying to set the SelectedItem, so your string is never going to match the Objects in the ComboBoxes. wpf; xaml; combobox; Share. FirstOrDefault(n => n. Code for the viewmodel Because WPF is "lookless" you can display your combobox items in any manner you wish. Follow answered Jun 21, 2012 at 14:15. You can bind to the SelectedValue instead of SelectedItem. C# WPF Combobox select first item. This is my ComboBox line in the XAML: <ComboBox ItemsSource="{Binding Repository. I know that the set method is working because I can successfully store the user's choice. This should be in the XAML for a control with a single I have a WPF ComboBox that I bind to a list of custom objects, each of which contains an IsSelected property. In this case you will have a TextBox control. DisplayMemberPath to a Cause. Resources> <CollectionViewSource x:Key="Modules" Source="{Binding Path=Modules}" /> </UserControl. There are two solutions: A better The ComboBox contains the names "Joe" and "Steve" and "Steve" is selected by default. Something like: <DataTemplate DataType="{x:Type MyAssembly:Customer}"> <StackPanel> <TextBlock Text="{Binding Name}" /> </StackPanel> </DataTemplate> Can I select another Template for the selected item in a ComboBox? Solution For starters, your combobox ItemSource is bound to a property called Categories but you do not show how this property is coded or how your NodeCategory property is initially synced with the item. How to set an item as selected in a combobox. The order of setting Items and SelectedItem should not matter. Commented Jul 22 The default should be fine in that regard. When I create a combobox in WPF I want it to have a name on it like "Your choice", just like if it was a common button and when I click on it I want only the items to dropdown, not the name on the , How to display default text "--Select Team --" in combo box on pageload in WPF? Get selected Item name from combo box. Or. If I use the mouse to drop the ComboBox down and select the "Hello" item, that works too. Provides a property of type T representing the selected item. – Sinatr Sorted by: Reset to default 0 Bind SelectedItem instead of SelectedValue: <ComboBox ItemsSource="{Binding UserCollection}" SelectedItem="{Binding SelectedUser}" SelectedValuePath="Id" DisplayMemberPath="UserName" /> Setting the first item as selected item in WPF Combo box. . I want to display the list of selected items as comma seperated text on the combobox after the user has selected an item from the combobox. SelectedValue or on ComboBox. But then if I try to re-select the empty item at the top of the list, the ComboBox closes and returns to its previous value of "Hello"! In my WPF app I just want to change the background color of the Combo box. ToString() right after the creation of Form1. Any ideas to get it You can set the ComboBox. Expected behavior The ComboBox should show the SelectedItem; i. what happens now is, when I set the original datasource, the logic for selection is executed due to SelectionChanged event being I've a combobox in WPF with 4 static values in it: <ComboBox SelectedValue="{Binding Source={x:Static properties:Settings. You can use ICollectionView to get an event in the viewmodel when another item gets selected. SelectedIndex = -1; works for me. I can get my list to populate with the data but I also would like to add a default item like "--All Models--". I have a ComboBox in my WPF application where I display a list of items. Most of the times the first item is the correct choice in the itemssource list, only sometimes on a personal request the item could be changed. Related. 2) The selected item is normally show in blue color by default, but when i click out side the listview,rather than deselecting the item. Use the Sorted by: Reset to default 68 Add VerticalContentAlignment="Center" to your combobox. On combo box selectionChanged event i have added one more item in combo box. If I select an item, the selected Item won't be shown. Are you doing anything else in your event handler? If the Combobox item source is a List<string> and the selected item is string I had this same problem when scrolling through a virtualizing DataGrid that contains ComboBoxes. Thanks. But like I said, this Hi, I have combobox with three . Then save off the SelectedItem or SelectedValue to a member variable. I like that first device is selected by default. You can't. NET ListItem's Value property. Code should pretty much explain it. oifvw gxr oydqn djbqd knjgt xejj nnmjy ymogxo gwy smft