Recent questions tagged WPF

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wpf - How to bind to a StaticResource with a Converter?

I want to use a Converter to change the value of a StaticResource before assigning it to a property ... Converter={StaticResource myConverter}}? 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 - Declaring Text Decorations such as Underline, Strikethrough in a Style

How do I include text decorations such as Underline, Strikethrough etc in a Style definition: <Style x:Key=" ... ) and all is well. 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 - XAML - The property 'Content' is set more than once

Very new to WPF and XAML. I can't get my head around why I can't place a WPF control where I would like in ... ="2"> Items </StatusBar> </Grid> 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 - Datagrid Set focus on newly added row

I have a datagrid bound to an observable collection. When the user press the "add button" it adds a new ... pattern. Any ideas or suggestions? See Question&Answers more detail:os...

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

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803 views

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wpf - RenderTargetBitmap + Resource'd VisualBrush = incomplete image

I've found a new twist on the "Visual to RenderTargetBitmap" question! I'm rendering previews of WPF stuff for ... Anybody have a fix for this? 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 - Why Width="*" doesn't work for columns in DataGrid located in RowDetailsTemplate

If I set widths of DataGrid (located in RowDetailesTemplate) columns using "*" - columns scaling doesn't ... .RowDetailsTemplate> </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 - Is there a significant performance cost to DynamicResource instead of StaticResource?

Our designer is using Blend to style our WPF application. When he chooses local resources for properties, Blend ... and DynamicResource in WPF? See Question&Answers more detail:os...

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

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1.4k views

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wpf - bind to a property in the parent control

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

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wpf - Bind to ItemsControl's DataContext from inside an ItemTemplate

I have an ItemsControl whose for the ItemTemplate DataTemplate contains a Button. I want the Command on ... ItemsControl's DataContext object? See Question&Answers more detail:os...

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

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960 views

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wpf - How to Automatically Use a DataTemplate Based on ContentControl's Current Content's DataType

When I attempt to specify multiple DataTemplates for use by a ContentControl so that the correct one (based ... node appears ContentControl). 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 - What is the simplest way to get the selected text of a combo box containing only text entries?

My WPF ComboBox contains only text entries. The user will select one. What is the simplest way to get the text of ... . See Andy's answer below. 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 - Get owner of context menu in code

I have a ContextMenu like this: <StackPanel Orientation="Horizontal"> <StackPanel.ContextMenu> <ContextMenu> <MenuItem ... do this? Thanks! 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 - What is the font family of the close/minimize/reduce button in Windows 10?

We are developing a custom header bar and we need to use the close/minimize/reduce button from the Windows 10 theme ... there a way to get it? 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 you bind a grid's children to a list?

In my ViewModel I have a list of items that I would like a grid in my view to bind to (the items ... rendered correctly within the grid. Thanks See Question&Answers more detail:os...

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

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998 views

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wpf - How to prevent InvokeCommandAction from propagating event to parent elements?

I realised that when using an InvokeCommandAcction associated to an EventTrigger, the original event was still routing up ... ... </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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1.3k views

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wpf - How can I make an Observable Hashset in C#?

Currently I am using an ObservableCollection within a WPF application, the application is an implementation of Conway's ... items on a Canvas? See Question&Answers more detail:os...

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

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968 views

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wpf - ViewModel per View or per Model?

In the MVVM Pattern, is there exactly one ViewModel per View or is there exactly one ViewModel per Model? See Question&Answers more detail:os...

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

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1.1k views

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wpf - Understanding Uniform Grid control

I was just trying uniform grid, how it works. Code : <UniformGrid Name="uniformGrid1" Rows="2" Columns="3"> < ... .Column if they do nothing ??? See Question&Answers more detail:os...

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

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937 views

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wpf - Alternate background color in Listview XAML

I'm using a listView based on itemTemplate. So i need in my template to alternate the background color : - fist ... How Can I do this please?? See Question&Answers more detail:os...

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

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908 views

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wpf - Binding only part of a label

How would one achieve mixing bound values with constant text in a WPF bound control? For example, say I have a ... one label in a flow control? See Question&Answers more detail:os...

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

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1.1k views

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wpf - Conditional DataTemplate

Here is what I am trying to do. I have 2 Data Templates defined which both refer to a different user control. ... do this? 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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1.5k views

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wpf - How to cast a System.Windows.Controls.SelectedItemCollection?

I have a method: private void DeletePuzzle(object param) { } param is a System.Windows.Controls. ... through param's items? 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 - TreeView shows blue for selected item

I have a treeview structure. When I try to click on the nodes there is a blue color that shows the node ... to be displayed on the tree. See Question&Answers more detail:os...

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

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1.7k views

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wpf - Display a default DataTemplate in a ContentControl when its content is null or empty?

I would think this is possible, but the obvious way isn't working. Currently, I'm doing this: < ... writing a custom template selector? See Question&Answers more detail:os...

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

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1.3k views

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wpf - Fill all available space in ItemsComtrol with same width size of elements

I have an ItemsControl, the ItemsPanel is made by a DockPanel. Inside of the DockPanel, I can have one, two, ... Button> </Grid> </DataTemplate> See Question&Answers more detail:os...

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

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991 views

1 answer

wpf - Make Object Follow Mouse On MouseDown and "Stick" On MouseUp

I'm working with a project that is WPF and VB.net. I want to visually simulate "dragging" an object (though ... ! Thank you all very much. See Question&Answers more detail:os...

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

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937 views

1 answer

wpf - How to draw a collection of points as separate circles?

My view model has a PointCollection property like this: public class ViewModel : INotifyPropertyChanged { public ... in the PointsCollection. See Question&Answers more detail:os...

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

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2.2k views

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wpf - PdfWriter.GetInstance throws System.NullReferenceException

I'm trying to create a pdf document using iTextSharp 5.3.4 using the following Document document = new Document() ... - anyone got any ideas? See Question&Answers more detail:os...

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

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