There are cases in which you would need the Enter key to operate as the Tab key. In order for the Enter key to be used as a Tab key, you could use code similar to the following:
private void Text1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13) //Determine Enter
{
SendKeys.Send("{TAB}"); //???Fake??? Tab press
e.Handled = true;
}
}