How to make the Close button disabled in a windows Form using C# coding

Question

every one. I just want to make the Close button disabled on a button click event using C#.net. I am trying for this but not correctly sure it\'s correct.

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Answer 1

private const int dis_close_button = 0x200;
    protected override CreateParams CreateParams
    {
        get
        {
            CreateParams ObjCP = base.CreateParams;
            ObjCP.ClassStyle = ObjCP.ClassStyle | dis_close_button;
            return ObjCP;
        }
    }

Try, this...