ctrl + a for selecting all text in textbox

i have found this for selecting all the text in textbox by pressing ctrl+a for selecting all the text in textbox

private void textBox3_KeyPress(object sender, KeyPressEventArgs e)
        {
             if (e.KeyChar == '\x1')
            {
                ((TextBox)sender).SelectAll();
                e.Handled = true;
            }

        }

but the problem is i have many textbox in my data entry form. so i want to reduce the code. i have to write this code for every keypress event of textbox.
how can i do? writing one code for many textbox for selecting?
sorry for my bad english

Tags: C#