Recent questions tagged wpf

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wpf - MouseOver highlighting style returning to default after a second (Caused by Aero?)

I'd trying to style my ComboBoxes to match the rest of the UI but I'm having problems with the IsMouseOver ... make the background color stay? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Cannot convert type IEnumerable to ObservableCollection...are you missing a cast?

I'm trying to return entities where the bool "isAssy" is true: public ObservableCollection<MasterPartsList> ... missing a cast?" See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Merged dictionaries in the App.xaml

I have a bunch of Xaml vector icons inside a separated .xaml. I load them inside my window using this ... have multiple properties Resource... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How do I update an IValueConverter on CollectionChanged?

Here's a basic example to explain my problem. Let's say I have ObservableCollection<int> Numbers {get; set;} ... added and removed to Numbers? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Bind command from Business object to View in MVVM

I populate DataGrid in WPF through MVVM. I have business object with 4 properties to create the Row and Columns ... about items of the DataGrid? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Custom styled listbox - how can I keep the style for a selected item?

I have a styled listbox. Listbox items change color when hovered over and when selected. Hover and select ... StaticResource myListBoxStyle}" /> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Binding to ViewModel.SubClass.Property (sub-property)

let's say i have a section on my screen where "current record" is edited.. so my view model has ... correct: {Binding Path=CurrentRecord.Notes} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Programmatically add style trigger

Can anyone please help how to programatically add the following style: <style> <style.Triggers> <Trigger Binding=" ... /style.Triggers> </style> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf controls - Can I explicity show tooltip on Mouse Click event in WPF?

I am showing a Tool Tip when Mouse hovers on Help image. The xaml is given below: <Image x:Name="HelpImage" ... on the image ? Please Help!! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Can you replace characters in a textbox as you type?

We are looking for a way to make a textbox replace certain characters as a person types in it. Note, we are ... Hope that makes more sense now. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - TriState Checkbox - how to change the order of the states

I have a CheckBox in my application that is using the TriState mode. The normal behavior for this mode ... something that should be obvious. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Having TextChanged Event Fire Immediately as Text is Typed into TextBox

On a wpf TextBox that has an TextChanged event, it seems to only fires when focus is taken away from the ... , rather than when focus changes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - 'Cannot find governing FrameworkElement...' warning when binding inside DataTemplates

I'm getting this warning in Visual Studio output window when binding on a SolidColorBrush property inside a ... . Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Stick to the bottom of a StackPanel

In my window, there is a Grid that takes up 100% of the available vertical space. Inside that Grid is a ... it can also be a DockPanel. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Combo-box loses selection after collection changes

I have a WPF combo box bound to an obvserable collection (OC): <ComboBox Name="cbCombination" ItemsSource="{Binding ... the events fire. :( See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to Play Transparent background avi file in media element?

I have a video with transparent background in .avi format (Made from Adobe After Effects), but the transparent ... wrong please let me know. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How can I style a DataGridCell's content based on binding without naming that binding

I would like to create a style that makes my cell's content green if positive, red if negative or black if 0. ... property I'm basing this on. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How can I access a ListBox within a TabControl.ContentTemplate?

In my code behind I set the MessageBoxTabControl.ItemsSource to an Observable Collection. <TabControl x:Name=" ... reference to my ListBox? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Missing "Run as Administrator" in VS Installer's Shortcut

I created a shortcut from the application .EXE in Visual Studio Installer, but the resulting shortcut did not have ... enabled on right-click? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - ListView Selected Item Style Override

I have a WPF ListView that I'm trying to apply a custom style too... primarily I want to make the ... > </ListView.ItemTemplate> </ListView> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.4k views

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wpf - The calling thread cannot access this object because a different thread owns it

i have a problem whenever i Refresh the prograss bar i get the error The calling thread cannot access this object ... ((int)percentageDone); };` See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

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wpf controls - WPF Textblock translation based on reference point

Please check the attached image. I made the textblock origin to it's center by RenderTransformOrigin="0.5,0. ... case I need absolute transform. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Specified element is already the logical child of another element. Disconnect it first”

i have user control that contain grid and inside it there is expander the problem is when i try to open new ... Grid> </Grid> </UserControl> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Selection bug for listbox where the list items are value types / structs and contain duplicates?

I turned an Horizontal ItemsControl to a Listbox so that I am able to select individual items but found that ... strings (value type semantics) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

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wpf - Binding to the "object.GetType()"?

I have an ObservableCollection<object> Let's consider we have 2 items in it : int a = 1; string str = "hey ... int string Thanks for any help ! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.5k views

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wpf - DataGridComboBoxColumn cell not displaying selected item text?

I was wondering how you get the DataGridComboBoxColumn to display the selected item text when it is ... > </DataGridComboBoxColumn> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

1 answer

wpf - Change disabled listbox background to gray

I have a ListBox which I need to gray out when it's disabled. Per user request it's not enough to disable it ... task, I'd appreciate the help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.1k views

1 answer

wpf - Binding ObservableCollection<> to a TextBox

I have data comming back from web service in the form of a ObservableCollection<string> I want to bind the ... NotImplementedException(); } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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