It's been like an hour. I just want to implement Copy & Paste while editing my DataGridView. Maybe I'm asking too much?

This is what I have so far. Initalization:

dataGridView.EditingControlShowing  = new DataGridViewEditingControlShowingEventHandler(dataGridView_EditingControlShowing);

I guess which calls:

    private void dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        e.Control.KeyDown  = Control_KeyDown;
    }

And we have:

    private void Control_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.Modifiers == Keys.Control && e.KeyCode == Keys.C)
        {
            System.Diagnostics.Debug.WriteLine("control c");
        }
    }

I can capture Control. I can capture C. I can't capture Ctrl-C. It's impossible.

CodePudding user response：

The KeyDown event is only triggered when a cell is in edit mode in the DataGridView, so the keyboard shortcut event catcher will not work in other cases. You can fix this problem by pointing the KeyDown event handler as follows:

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
   if (e.Control is DataGridViewTextBoxEditingControl)
   {
      DataGridViewTextBoxEditingControl tb = e.Control as DataGridViewTextBoxEditingControl;

      tb.KeyDown -= dataGridView_KeyDown;
      tb.PreviewKeyDown -= Control_KeyDown;

      tb.KeyDown  = dataGridView_KeyDown;
      tb.PreviewKeyDown  = Control_KeyDown;
   }
}

private void Control_KeyDown(object sender, KeyEventArgs e)
{
   if (e.KeyData == (Keys.Control | Keys.C))
   { 
      System.Diagnostics.Debug.WriteLine("control c");
   } 
}

A similar discussion is available in this post.

CodePudding user response：

The grids PreviewKeyDown event should fire when a cell is not in edit mode… something like…

private void dataGridView1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) {
  if (e.Modifiers == Keys.Control && e.KeyCode == Keys.C) {
    System.Diagnostics.Debug.WriteLine("Preview control c");
  }
}