Hi,

I m new in c#, windows application.

I have created a MDIForm, ChildForms named (Form1, Form2, Form3, ..........).
Each child form contains the function :

public void Enable_Disable_ GU(bool p_status)
{
textBox1.Enable d = p_status;
textBox2.Enable d = p_status;
textBox3.Enable d = p_status;
}

MDIForm contains a button : btn1. At click event of...