wpfevent-handlingdatatemplateevent-triggers

Need help handling events of a DataTemplate in the Application.xaml file

I have in my application a data template that has a few buttons. I want those buttons' even handler to be fired in the current page (I am using this template in many pages) rather than in the Application.xaml.vb/cs file, since I want different actions on each page.

I hope I am clear.

Solution

  • You can use commanding to achieve this. Have the Buttons in the DataTemplate execute specific Commands:

    <Button Command="{x:Static MyCommands.SomeCommand}"/>

    Then have each view that uses that DataTemplate handle the Command:

    <UserControl>
    <UserCommand.CommandBindings>
         <CommandBinding Command="{x:Static MyCommands.SomeCommand}"
                         Executed="_someHandler"/>
    </UserCommand.CommandBindings>
</UserControl>

    EDIT after comments: Once you have created a code-behind for your ResourceDictionary as per these instructions, you can simply connect events in the usual fashion:

    In MyResources.xaml:

    <ListBox x:Key="myListBoxResource" ItemSelected="_listBox_ItemSelected"/>

    Then in MyResources.xaml.cs:

    private void _listBox_ItemSelected(object sender, EventArgs e)
{
    ...
}