I tried this code:
private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { if (Convert.ToInt32(e.KeyChar) == 13) { MessageBox.S
Also you can do this with keypress event.
private void textBox1_EnterKeyPress(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { // some code what you wanna do } }