Code to Disable close button on the form

abelLazm 2 Tallied Votes 475 Views Share

Add this code any where in your main form and You will be able to disable the X button on a winForm

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;
     }
 }