I want to catch a Backspace control event and delete the last character that my user wrote on a ultracomboEditor.

I've tried both of approaches but they doesnt work..

Approach 1:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
    {
        if (keyData == Keys.Back)
            OnKeyPress(new KeyPressEventArgs((Char)Keys.Back));


        return base.ProcessCmdKey(ref msg, keyData);
    }

Approcah 2:

private void ultraComboLeftEyeAxis_KeyPress(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Back)
        {
            e.Handled = true;
        }
    } 



 this.ultraComboLeftEyeAxis.KeyPress += new System.EventHandler(this.ultraComboLeftEyeAxis_KeyPress);

Can you help me?