Code for replacing the tab key using carriage return

/// <Summary>
/// Handle events with the keyboard
/// The main function is to rewrite the keyboard command event. In this case, if the current focus is not on the button, you can use enter to replace the tab key.
/// </Summary>
/// <Param name = "MSG"> </param>
/// <Param name = "keydata"> </param>
/// <Returns> </returns>
Protected override bool processcmdkey (ref message MSG, keys keydata)
{
If ((! (Activecontrol is button) & (keydata = keys. Up | keydata = keys. Down | keydata = keys. Enter ))
{
If (keydata = keys. Enter)
{
System. Windows. Forms. sendkeys. Send ("{tab }");
Return true;
}
If (keydata = keys. down)
System. Windows. Forms. sendkeys. Send ("{tab }");
Else
Sendkeys. Send ("+ {tab }");
Return true;
}
Else
Return base. processcmdkey (ref MSG, keydata );
}