private void OkBtn_Click(object sender, EventArgs e) { XLDocument.Header header = new XLDocument.Header(); string office = (string)OfficeDDL.SelectedValue; string footer = (string)DeptDDL.SelectedValue; header = XLDocument.MapHeaderFooter(office, footer); if (header != null) { XLDocument.DeployHeader(header); XLDocument.UpdateParameter("HeaderDeployed", "true"); } this.Close(); }