DataGridView delete problem

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C#

Visual-Studio

VS2010

Dear Friend,
Datagridview control problem.I have Images to define my problem but i think editor is not support it.Anyway problem is that i have a DataGridView Control in VS2010 to add and delete data from grid, when i select row of grid to delete record then grid pointer select complete row, after i press delete button from keyboard then grid pointer convert into pensil pointer/edit thats why i cannot delete my row from datagridview, below events and code which i m using,it is working fine when i use mouse double click event. but i need to delete row on delete button.i have try keyup/key down evetns too may be i could not set any property or event.

private void dgdSoilTexture_KeyDown ( object       sender, 
                                      KeyEventArgs e )
    {
    
    if ( e.KeyCode == Keys.Delete )
        {
        dgdSoilTexture.EditMode = DataGridViewEditMode.EditOnF2;
        if ( MessageBox.Show ( 
               "Are you sure you want to Delete this record?",
               "", 
               MessageBoxButtons.YesNo, 
               MessageBoxIcon.Question, 
               MessageBoxDefaultButton.Button2) == DialogResult.Yes )
            {
            dgdSoilTexture.Rows.RemoveAt ( dgdSoilTexture.CurrentRow.Index );
            }
        }
    }