How to enable copy-paste from Excel into custom DataGridView?

Question

I am trying to solve this good old problem in my own environment, adapted lots of different solutions, still no success.
I have a User Control , named EntryGrid , that has a DataGridView , it's headers and such things are set in the code. Then there is a form that has an EntryGrid dropped to it.
I know that excel columns must be prepared to be able to paste all cells into a row, for this I used this solution: copypaste , except the Copy part. This is how it looks like at my place:

Private Sub EntryGrid_KeyDown(sender As Object, e As KeyEventArgs) Handles EntryGrid4.KeyDown, EntryGrid8.KeyDown, EntryGrid16.KeyDown, EntryGrid32.KeyDown
        e.Handled = True
        Dim entryGrid As EntryGrid = sender
        Dim dataGrid As DataGridView = entryGrid.DataGrid
        If (e.Control And e.KeyCode = Keys.V) Then
           MessageBox.Show("Success")               'for now
        End If
End Sub

This is absolutely not working for me. I even set KeyPreview to True in the form, but nothing happens ever.
Then I tried this solution , mine with any result:

Private Sub EntryGrid_EditingControlShowing(sender As System.Object, e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles EntryGrid4.EditingControlShowing
        AddHandler e.Control.KeyDown, AddressOf cell_KeyDown
    End Sub

    Private Sub cell_KeyDown(sender As Object, e As KeyEventArgs)
        If e.KeyCode = Keys.V Then
            MessageBox.Show("Success")
        End If
    End Sub

EntryGrid4 is the name of the usercontrol on the form, but it hasn't got any EditingControlShowing event, only DataGridView has, but I cannot use like this: EntryGrid4.DataGrid.EditingControlShowing
I created an event in EntryGrid ( Public Event EditingControlShowing(sender As Object, e As DataGridViewEditingControlShowingEventArgs) ), but anything's changed.
I am able to paste anything from clipboard to a cell, but it had been possible before I started the modifying. Thanks for any idea!

Answer 1

ProcessCmdKey method of your UserControl is what you are looking for. Override it and check for Ctrl + V and do what you need. For example:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
    if (keyData == (Keys.Control | Keys.V))
    {
        if (dataGridView1.EditingControl != null)
            dataGridView1.EditingControl.Text = Clipboard.GetText();
        else if (dataGridView1.CurrentCell != null)
            this.dataGridView1.CurrentCell.Value = Clipboard.GetText();
        return true;
    }
    return base.ProcessCmdKey(ref msg, keyData);
}