putting data with A+ctri key.

Question

Dear Friends, please check my code, I want to update data with pressing A+ctrl ... but it does not work? code is below...

protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if(e.KeyCode==Keys.A && e.Control)
{
try
{
scb = new SqlCommandBuilder(da);
da.Update(dt);
MessageBox.Show("Recode updated", "Update", MessageBoxButtons.OK, MessageBoxIcon.Information);
Form2 f1 = new Form2();
f1.Show(); //this.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}