i tried to close the modal dialog in sandbox solution using the following code
HttpContext context = HttpContext.Current;
context.Response.Write("<script type='text/javascript'>window.frameElement.commitPopup();</script>");
context.Response.Flush();
context.Response.End();
but its throwing null value error at
context.Response.End();
this works fine in farm solutions but not work sandbox solution.
is there any way to close modal dialog in sandbox solutions?
Thanks in advance