Block (Prevent) keyboard enter key in C#

Use the KeyDown event and suppress the Enter key like this:

private void Control_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter)
    {
        e.SuppressKeyPress = true;
        e.Handled = true;
    }
}

Works for Windows Forms. https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.keyeventargs.suppresskeypress?view=windowsdesktop-9.0geometry dash