当用户在 RadGridView 中按 Enter 时，防止跳转到下一行

Question

I have a RadGridView from Telerik UI for WPF with an editable column. When user edits a cell in that column and hits Enter , the same cell in next row in the grid gets focus.

I want the cell that the user just edited to lose focus. How to do this MVVM-style?

Answer 1

You can change this behavior by writing a custom keyboard command provider. This provider overrides the default Enter press action. It commits the edits and deselects the cellby setting the SelectedItem to null .

public class CustomKeyboardCommandProvider : DefaultKeyboardCommandProvider
{
   private readonly GridViewDataControl _grid;

   public CustomKeyboardCommandProvider(GridViewDataControl grid)
      : base(grid)
   {
      _grid = grid;
   }

   public override IEnumerable<ICommand> ProvideCommandsForKey(Key key)
   {
      var commands = base.ProvideCommandsForKey(key).ToList();

      if (key != Key.Enter)
         return commands;

      commands.Clear();
      commands.Add(RadGridViewCommands.CommitEdit);

      _grid.SelectedItem = null;

      return commands;
   }
}

You have to assign the new provider. The easiest way is in code-behind, as it has a constructor parameter.

MyRadDataGridView.KeyboardCommandProvider = new CustomKeyboardCommandProvider(TestGridView);

Alternatively, create a TriggerAction<RadGridView> and attach it to the Loaded event of the grid view.

public class SetCustomKeyboardCommandProviderAction : TriggerAction<RadGridView>
{
   protected override void Invoke(object parameter)
   {
      AssociatedObject.KeyboardCommandProvider = new CustomKeyboardCommandProvider(AssociatedObject);
   }
}

<telerik:RadGridView>
   <b:Interaction.Triggers>
      <b:EventTrigger EventName="Loaded">
         <local:SetCustomKeyboardCommandProviderAction/>
      </b:EventTrigger>
   </b:Interaction.Triggers>
   <!-- ...other definitions. -->
</telerik:RadGridView>