Foreign character keyboard input in C# XNA

Question

XNA supports only English keyboards, so I want to use System.Windows.Forms's KeyPress event. But I can't. Why?

I tried my own codes:

// 1st
FromHandle(Window.Handle).FindForm().KeyPress += new System.Windows.Forms.KeyPressEventHandler(KeyPressEvent);
// 2nd
FromHandle(Window.Handle).FindForm().KeyPress += KeyPressEvent;

After I found and tried a solution from stackoverflow:

using System.Windows.Forms;

...

var form = (Form)Form.FromHandle(window.Handle);
form.KeyPress += form_KeyPress;

...

private void form_KeyPress(Object sender, KeyPressEventArgs e)
{  
    Console.WriteLine(e.KeyChar);
    e.Handled = true;
}

I tried these solutions in a new, empty C# XNA project, too, but none of them worked. What have I done wrong?