Sharepoint- GetDataTable方法返回null

时间:2018-05-15 12:23:43

标签: c# sharepoint caml sharepoint-list

我正在从Sharepoint列表中检索一些行。项目计数返回2,但是当我尝试使用GetDataTable方法获取DataTable中的项目时,它返回null。

这是我的代码:

public  DataTable GetInbox()
{

    using (SPSite site = new SPSite(SPContext.Current.Web.Url))
    {
        using (SPWeb web = site.OpenWeb())
        {
            SPList list = web.Lists.TryGetList("PromotionRecommendationList");                    
            var q = new SPQuery()
            {                        //recommend by current user and status is change request means request is visible to requestor in editable mode
                Query = @"<Where> <And>
                                <Eq>
                                   <FieldRef Name='RecommendBy_EmpCode' />
                                   <Value Type='Text'>"+obj_vemployee.GetEmployeeCode(GetLoggingName(CurrentUser.LoginName))+"</Value></Eq><Eq><FieldRef Name='Status' /><Value Type='Text'>"+Status.ChangeRquest+ "</Value></Eq></And><Or><Eq><FieldRef Name='assign_to_EmpCode' /><Value Type='Text'>" + obj_vemployee.GetEmployeeCode(GetLoggingName(CurrentUser.LoginName)) + "</Value></Eq></Or></Where>"
            };

            q.ViewFields = @"
                              <FieldRef Name='Request_No' />
                              <FieldRef Name='RecommendBy_EmpCode' />
                              <FieldRef Name='RecommendTo_EmpCode' />
                              <FieldRef Name='STATUS' />
                              <FieldRef Name='RequestStatus' />
                            ";
            var r = list.GetItems(q);
        lblTEst.Text = list.Items.Count.ToString();//this is returning 2                

        DataTable dtResults = r.GetDataTable();//returning null
        return dtResults;
        }
    }
    return null;
}

2 个答案:

答案 0 :(得分:0)

list.Items.Count返回列表中所有项目的编号,它不计算查询返回的项目,需要计算r变量中的项目(SPListItemCollection)

答案 1 :(得分:0)

这可能是由于您的caml查询未正确构建,因此没有为变量r返回数据。您的or仅包含一个条件,如果您不熟悉SharePoint caml schema

,则可以使用caml designer来构建查询