I have a DataTemplate that I want to find using the FrameworkElement.FindResource()
. To do that I need to have a key on the data template.
The problem is that x:key and assigning a data type are mutually exclusive. (Reference)
So, once I set the DataType for my template, how do I find the Key value? Is there some formula that converts the DataTemplate into a string for the Key?
(For inquries as to why I need to get the DataTemplate found by Resource see this question.
The x:Key seems to be an object of type System.Windows.DataTemplateKey
. So, you can "create" the key for your resource with new DataTemplateKey(typeof(myType))
. FindResource
will work with this key, since TemplateKey.Equals
has been overridden.
Here is a very simple example application:
XAML:
<Window ...>
<Window.Resources>
<DataTemplate DataType="{x:Type TextBlock}">
</DataTemplate>
</Window.Resources>
<Button Click="Button_Click">Test</Button>
</Window>
Codebehind:
//using ...
namespace WpfCsApplication1 {
public partial class Window1 : Window {
public Window1() {
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e) {
var key = new System.Windows.DataTemplateKey(typeof(TextBlock));
var r = (DataTemplate)this.FindResource(key);
MessageBox.Show(r.ToString()); // to show that it worked
}
}
}
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