The calling thread must be STA, because many UI components require this
Try to invoke your code from the dispatcher: Application.Current.Dispatcher.Invoke((Action)delegate{ // your code });
wpf
Setting design time DataContext on a Window is giving a compiler error?
I needed to add the mc:Ignorable=”d” attribute to the Window tag. Essentially I learned something new. The d: namespace prefix that Expression Blend/Visual Studio designer acknowledges is actually ignored/”commented out” by the real compiler/xaml parser! <Window … xmlns:mc=”http://schemas.openxmlformats.org/markup-compatibility/2006″ mc:Ignorable=”d” xmlns:d=”http://schemas.microsoft.com/expression/blend/2008″ … /> The following was taken from Nathan, Adam (2010-06-04). WPF 4 Unleashed (Kindle Locations … Read more
Difference between Control Template and DataTemplate in WPF
Typically a control is rendered for its own sake, and doesn’t reflect underlying data. For example, a Button wouldn’t be bound to a business object – it’s there purely so it can be clicked on. A ContentControl or ListBox, however, generally appear so that they can present data for the user. A DataTemplate, therefore, is … Read more
WPF Databinding: How do I access the “parent” data context?
You could try something like this: …Binding=”{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=DataContext.AllowItemCommand}” …
What framework for MVVM should I use? [closed]
It really depends on what you are trying to achieve, and how much infrastructure you want in place already, plus the ease with which you can find samples that help you out. I’m going to declare an interest here, because I’ve been actively involved in at least one MVVM framework, and I’ve had input into … Read more
Window Height=”Auto” not working as expected
Set the window’s property SizeToContent=”WidthAndHeight”. This should help.
How to bind multiple values to a single WPF TextBlock?
You can use a MultiBinding combined with the StringFormat property. Usage would resemble the following: <TextBlock> <TextBlock.Text> <MultiBinding StringFormat=”{}{0} + {1}”> <Binding Path=”Name” /> <Binding Path=”ID” /> </MultiBinding> </TextBlock.Text> </TextBlock> Giving Name a value of Foo and ID a value of 1, your output in the TextBlock would then be Foo + 1. Note: This … Read more
Text vertical alignment in WPF TextBlock
A Textblock itself can’t do vertical alignment The best way to do this that I’ve found is to put the textblock inside a border, so the border does the alignment for you. <Border BorderBrush=”{x:Null}” Height=”50″> <TextBlock TextWrapping=”Wrap” Text=”Some Text” VerticalAlignment=”Center”/> </Border> Note: This is functionally equivalent to using a grid, it just depends how you … Read more
Any way to make a WPF textblock selectable?
Use a TextBox with these settings instead to make it read only and to look like a TextBlock control. <TextBox Background=”Transparent” BorderThickness=”0″ Text=”{Binding Text, Mode=OneWay}” IsReadOnly=”True” TextWrapping=”Wrap” />
Simple (I think) Horizontal Line in WPF?
How about add this to your xaml: <Separator/>