StringBuilder s = new StringBuilder();
s.Append("<script language=javascript>");
s.Append("window.parent.document.getElementById('dialogCase').style.display = 'none';window.parent.document.location.reload();");
s.Append("</script>");
Type cstype = this.GetType();
ClientScriptManager cs = Page.ClientScript;
string sname = "lt";
if (!cs.IsStartupScriptRegistered(cstype, sname))
cs.RegisterStartupScript(cstype, sname, s.ToString());