Infopath 编程提交表单报错。

报：已向服务器的 Windows 事件日志中添加了一个条目。
日志 ID:5337
提交事件处理程序返回了表示提交失败的值

报错原代码如下：

public void FormEvents_Submit(object sender, SubmitEventArgs e)
        {
            // 如果提交操作成功，则设置
             e.CancelableArgs.Cancel = false;
            // 在此处编写代码。
                 using (SPSite site = new SPSite("http://XXX"))// SPContext.Current.Site
                 {
                     using (SPWeb web = site.OpenWeb())//SPContext.Current.Web
                     {
                         XPathNavigator navigator = MainDataSource.CreateNavigator();
                         string d = navigator.SelectSingleNode("/my:BookStore/my:部门", this.NamespaceManager).Value;
                         string z = navigator.SelectSingleNode("/my:BookStore/my:职位", this.NamespaceManager).Value;
                         string n = navigator.SelectSingleNode("/my:BookStore/my:姓名", this.NamespaceManager).Value;

                         SPList list = web.Lists["自定义List"];
                         SPListItem listitem = list.Items.Add();
                         listitem["部门"] = d;
                         listitem["单位"] = z;
                         listitem["姓名"] = n;
                         listitem.SystemUpdate();
                     }
                 }

             }

原因是发部到SharePoint网站，浏览器中，没有权限 修改代码为：

public void FormEvents_Submit(object sender, SubmitEventArgs e)
        {
            // 如果提交操作成功，则设置
             e.CancelableArgs.Cancel = false;
            // 在此处编写代码。
             SPSecurity.RunWithElevatedPrivileges(delegate()
             {
                 using (SPSite site = new SPSite("http://XXX"))// SPContext.Current.Site
                 {
                     using (SPWeb web = site.OpenWeb())//SPContext.Current.Web
                     {
                         web.AllowUnsafeUpdates = true;
                         XPathNavigator navigator = MainDataSource.CreateNavigator();
                         string d = navigator.SelectSingleNode("/my:BookStore/my:部门", this.NamespaceManager).Value;
                         string z = navigator.SelectSingleNode("/my:BookStore/my:职位", this.NamespaceManager).Value;
                         string n = navigator.SelectSingleNode("/my:BookStore/my:姓名", this.NamespaceManager).Value;

                         SPList list = web.Lists["自定义List"];
                         SPListItem listitem = list.Items.Add();
                         listitem["部门"] = d;
                         listitem["单位"] = z;
                         listitem["姓名"] = n;
                         listitem.SystemUpdate();
                     }
                 }

             });
        }

问题解决，成功提交。