Disallow entry from numeric keyboard to custom date text box and pass entry to text box

Question

Can someone help me with custom text box? I want change behavior custom date text box - disallow entry and pass entry from numeric keyboard to a text box. Code below disallow entry, but how I can pass entry? public class myDateTextBox : AMS.TextBox.DateTextBox { protected override bool ProcessDialogKey(Keys keyData) { if (keyData >= Keys.NumPad0 && keyData <= Keys.NumPad9) { base.ProcessDialogKey(keyData); return true; } return base.ProcessDialogKey(keyData); } } I try something like this, but it dosen't work. public class x { // ... myDateTextBox order; TextBox textBox; private void order_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9) { textBox.Text = Convert.ToString(e.KeyData); } } } Thanks in advance for any help.