Recent questions tagged WPF

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wpf - Select TreeView Node on right click before displaying ContextMenu

I would like to select a WPF TreeView Node on right click, right before the ContextMenu displayed. For WinForms ... are the WPF alternatives? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - What does this WCF error mean: "Custom tool warning: Cannot import wsdl:portType"

I created a WCF service library project in my solution, and have service references to this. I use the ... to those without this checked? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to bind Close command to a button

The easiest way is to implement ButtonClick event handler and invoke Window.Close() method, but how doing this through a Command binding? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to make all controls resize accordingly proportionally when window is maximized?

When I clicked on the maximize button the window is maximized but the controls are not resized proportionally. What is ... > </Grid> </Window> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - What's the meaning of * (asterisk) in XAML ColumnDefinition?

What is the meaning of * (asterisk) in the XAML below? <ColumnDefinition Width="0.07*"/> <Grid Height=" ... > </Grid.ColumnDefinitions> </Grid> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Difference between Visibility.Collapsed and Visibility.Hidden

What are differences between Visibility.Collapsed and Visibility.Hidden in WPF? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Open directory dialog

I want the user to select a directory where a file that I will then generate will be saved. I know that ... Has anyone seen this done before? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Create a BitmapImage from a byte array

I am creating a byte array with arbitrary values in it and want to convert it into a BitmapImage. bi = ... a BitmapSource from any byte array? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Select ListBoxItem if TextBox in ItemTemplate gets focus

I have added a DataTemplate to a ListBox class to bind my collection to: <ListBox x:Name="lstEmails" Height ... twice bit is good functionality. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How can I reduce RadioButton binding code?

I'm following this answer on how to databind enums (ints in my case) to RadioButtons, but if I've got ... it in codebehind make more sense? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - ComboBox.SelectedValue not updating from binding source

Here's my binding source object: Public Class MyListObject Private _mylist As New ObservableCollection(Of String) ... to obj2.SelectedName. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - CLIPBRD_E_CANT_OPEN error when setting the Clipboard from .NET

Why does the following code sometimes causes an Exception with the contents "CLIPBRD_E_CANT_OPEN": Clipboard.SetText(str) ... not after that. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Advanced XAML Animation effects. Pulse, Marching ants, Rotations. Alerts

I have a list of alarms. When alarms are activated it has been requested to make them more noticeable. When an ... this point... (not really) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to free the memory after the BitmapImage is no longer needed?

First, I load a BitmapImage into the Image control, whice is located on the Window. Then I work with the ... control manually to free the RAM? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - ItemsControl with multiple DataTemplates for a viewmodel

is it possible to bind an itemscontrol with canvas as template to multiple DataTemplates? I have 2 collections and ... the binding look like an See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Are "{Binding Path=.}" and "{Binding}" really equal

In my WPF project, I have a ListBox that displays items from a List<string> collection. I wanted to ... 'm definitely missing something here. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Grouping items in a ComboBox

I have a ListView that contains two types of objects, single and multiple. The single is a ordinary TextBlock while the ... ] [Header ] [ Item] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Convert memory stream to BitmapImage?

I have an image that was originally a PNG that I have converted to a byte[] and saved in a database. ... convert a stream to a BitmapImage? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Bubbling scroll events from a ListView to its parent

In my WPF application I have a ListView whose ScrollViewer.VerticalScrollBarVisibility is set to Disabled. It is ... up to the ScrollViewer? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Trouble referencing a Resource Dictionary that contains a Merged Dictionary

I have a library, CommonLibraryWpfThemes, with several Resource Dictionary XAML files in it. My Themes/Generic. ... .Resources> </Application> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Defining MenuItem Shortcuts

I need a simple way to set a shortcut for menu items. But this don′t work with shortcut, just with click: <MenuItem ... > I am using WPF 4.0 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf controls - WPF StringFormat on Label Content

I want to format my string binding as Amount is X where X is a property bound to a label. I've seen many ... but doesn't seem to be supported. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - What is the difference between x:Reference and ElementName?

According to the x:Reference Markup Extension page on MSDN, x:Reference References an instance that is declared ... compilation is not involved. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to open a new window using MVVM Light Toolkit

I am using MVVM Light toolkit in my WPF application. I would like to know what is the best approach for ... behind or what? Regards, Nabeel See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - How to make the contents of a round-cornered border be also round-cornered?

I have a border element with rounded corners containing a 3x3 grid. The corners of the grid are sticking out ... anywhere. Thanks for your help See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Setting a property with an EventTrigger

I want to be able to set a property with an EventTrigger, there's a number of problems with this. 1) ... is only specific to the UI. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Setters not run on Dependency Properties?

Just a short question, to clarify some doubts. Are setters not run when an element is bound to a dependency ... TextContent: " + value); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wpf - Data binding the TextBlock.Inlines

My WPF App receives a stream of messages from a backend service that I need to display in the UI. These messages ... do this, is this possible? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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