我试图在日期范围之间限制我的结果。我使用CSOM连接到SharePoint。我认为SharePoint版本是SharePoint Online(我们有办公室365工作)。
基本上,我想限制下面查询返回的日期。我想要 Start_Date< =今天和 End_Date> =今天。不仅如此,我还不太了解如何使用linq返回字段的值。
我补充说:
.Where(x => x.Id <= 50)
正常工作。这很容易,因为我可以找到具有Intellisense的Id
属性,但我无法找到如何提取我感兴趣的字段,以及如何使用linq来限制我的结果一个额外的地方。
现在我在尝试按原样运行代码时出现以下错误:
The 'ToDateTime' member cannot be used in the expression.
相关代码:
private ListItemCollection GetSharePointList(string XML, string tableName, ClientContext context, byte limit = 50)
{
List testTable = context.Web.Lists.GetByTitle(tableName);
CamlQuery camlQuery = new CamlQuery
{
ViewXml = XML //The Passed in XML is: "<view></view>"
};
ListItemCollection GetSharePointList = testTable.GetItems(camlQuery);
DateTime today = DateTime.Today;
context.Load(GetSharePointList,
items => items.Take(limit).Include(
item => item.Id,
item => item["DayOfMonth"],
item => item["Start_Date"],
item => item["End_Date"],
item => item["Task_FrequencyID_x003a_Frequency"],
item => item["TaskID_x003a_TaskName"],
item => item["TaskID_x003a_TaskAlias"],
item => item["TaskID_x003a_TaskDueTime"],
item => item["Daily_Frequency_x003a_DayofWeek"],
item => item["Weekly_Frequency_x003a_Week"],
item => item["End_Date"],
item => item["Monthly_Frequency"])
.Where(x => x.Id <= 50)
.Where(y => Convert.ToDateTime(y.FieldValues["Start_Date"]) <= today));
context.ExecuteQuery();
return GetSharePointList;
}
答案 0 :(得分:0)
要限制Start_Date&lt; = Today和End_Date&gt; = Today之间的结果,您需要使用CAML查询。这就是它在SharePoint中的工作方式。
因此,您需要修改代码,如下所示:
List testTable = context.Web.Lists.GetByTitle(tableName);
var viewQuery = string.Format(@"<View>
<Query>
<Where>
<And>
<Leq>
<FieldRef Name='Start_Date' />
<Value Type='DateTime'><Today /></Value>
</Leq>
<Geq>
<FieldRef Name='End_Date' />
<Value Type='DateTime'><Today /></Value>
</Geq>
</And>
</Where>
</Query>
</View>");
CamlQuery camlQuery = new CamlQuery
{
ViewXml = viewQuery;
};
ListItemCollection GetSharePointList = testTable.GetItems(camlQuery);
context.Load(GetSharePointList,
items => items.Include(
item => item.Id,
item => item["DayOfMonth"],
item => item["Start_Date"],
item => item["End_Date"],
item => item["Task_FrequencyID_x003a_Frequency"],
item => item["TaskID_x003a_TaskName"],
item => item["TaskID_x003a_TaskAlias"],
item => item["TaskID_x003a_TaskDueTime"],
item => item["Daily_Frequency_x003a_DayofWeek"],
item => item["Weekly_Frequency_x003a_Week"],
item => item["End_Date"],
item => item["Monthly_Frequency"]));
context.ExecuteQuery();
foreach(ListItem spListItem in GetSharePointList){
//do something with the data
}