wpf mvvm? drag and drop? easy? fast result?

This is not a 100% wpf mvvm approach, because this solution will use the help of the default code behind file. As we know, we should avoid touching the code behind file in case of a clean mvvm. Calling a ViewModel-method through the drop event of the default code behind file....

in the code behind file:

using MyProject.MyViewModels;

...

private void UserControl_Drop(object sender, DragEventArgs e)
{
      (this.DataContext as UserControlVieModel).OnDrop(sender, e);
}

in the ViewModel:

public void OnDrop(object sender, System.Windows.DragEventArgs e)

{
            ExampleText= "dropped";
} 

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