This is because the system is not able to find the file. and the reason could be youare trying to access the file before it is created. Thus the application works when your file is present and otherwise throws an exception. Fastest way (not the best) to slove ths is Handle the exception, you can do that by putting code (where you try to open the file) in a try catch block, and ask te usr to retry. I hope that helps. Regards,

u can create properties for ur controls and eccess text property of that control, i mean that the place where u hv designed control control.ascx there make a public property ex public string Addresstext { get { return control.text; } set { control.text = value; } } or if u wan't the whole control than you have to make attributes public which is not safe there's another solution use System.Web.UI.Control.FindControl(string controlname) USe Msdn to knw about it it finds a control in a control nd returns it scanning by name i hope ur querry has been answered sameer sood :-O