protected void btnReceipts_Click(object sender, EventArgs e) { string PatientID = ASPxGridView.GetDetailRowKeyValue(sender as Control).ToString(); ASPxGridView gvPatient = ASPxGridView.FindParentGridTemplateContainer(sender as Control).Grid; string DoctorID = gvPatient.GetMasterRowKeyValue().ToString(); string ClinicID = ASPxGridView.FindParentGridTemplateContainer(gvPatient).Grid.GetMasterRowKeyValue().ToString(); dsReceipts.SelectParameters["PatientID"].DefaultValue = PatientID; dsReceipts.SelectParameters["DoctorID"].DefaultValue = DoctorID; dsReceipts.SelectParameters["ClinicID"].DefaultValue = ClinicID; popupReceipts.AllowDragging = true; popupReceipts.AllowResize = true; popupReceipts.ResizingMode = DevExpress.Web.ASPxClasses.ResizingMode.Live; popupReceipts.ShowOnPageLoad = true; }