c# - Access codebehind variable in XAML

Question

How can I access the public variable which in Sample.xaml.cs file like asp.net <%=VariableName%>?

Answer 1

There are a few ways to do this.

• Add your variable as a resource from codebehind:

  myWindow.Resources.Add("myResourceKey", myVariable);
  

  Then you can access it from XAML:

  <TextBlock Text="{StaticResource myResourceKey}"/>
  

  If you have to add it after the XAML gets parsed, you can use a DynamicResource above instead of StaticResource.

• Make the variable a property of something in your XAML. Usually this works through the DataContext:

  myWindow.DataContext = myVariable;
  

  or

  myWindow.MyProperty = myVariable;
  

  After this, anything in your XAML can access it through a Binding:

  <TextBlock Text="{Binding Path=PropertyOfMyVariable}"/>
  

  or

  <TextBlock Text="{Binding ElementName=myWindow, Path=MyProperty}"/>