"Already Exists" 使用 CSOM 获取 SharePoint 2013 库项目时抛出异常

Question

我正在尝试使用 C# 中的 CSOM 从 SharePoint 2013 视频资产库中检索所有项目。当我运行我的控制台应用程序时，我偶尔会收到以下错误：

Microsoft.SharePoint.Client.ServerException: A list, survey, discussion board, or document library with the specified title already exists in this Web site.  Please choose another title.

我搜索了错误，但我发现的问题与创建列表或更新项目有关。我只是想找回物品。该库在浏览器中加载得很好。此外，我有一个网页运行与我的控制台应用程序具有相同的代码，并且不会引发异常。这是抛出异常的代码块：

ClientContext context = new ClientContext(SharePointURL);

                List AssetList = context.Web.Lists.GetByTitle(SharePointListTitle);

                context.Load(AssetList);

                CamlQuery query = CamlQuery.CreateAllItemsQuery();
                ListItemCollection items = AssetList.GetItems(query);

                //Retrieve all items in the ListItemCollection from List.GetItems(Query). 
                context.Load(items,
                    itms => itms.Include(
                        i => i["GUID"],
                        i => i["Title"],
                        i => i["FileLeafRef"],
                        i => i["FileRef"],
                        i => i["VideoSetDescription"],
                        i => i["Live_x0020_Date"],
                        i => i["Expiration_x0020_Date0"],
                        i => i["Is_x0020_Active"],
                        i => i["Tags"],
                        i => i["AlternateThumbnailUrl"]
                        )
                    );

                context.ExecuteQuery();

Answer 1

我现在在移动设备上，所以我无法轻松地为您测试这个，但我相信您也需要在加载 AssetList 后执行 context.ExecuteQuery()。

这将使您的来源：

ClientContext context = new ClientContext(SharePointURL);

List AssetList = context.Web.Lists.GetByTitle(SharePointListTitle);

context.Load(AssetList);
context.ExecuteQuery();

CamlQuery query = CamlQuery.CreateAllItemsQuery();
ListItemCollection items = AssetList.GetItems(query);

//Retrieve all items in the ListItemCollection from List.GetItems(Query). 
context.Load(items,
    itms => itms.Include(
        i => i["GUID"],
        i => i["Title"],
        i => i["FileLeafRef"],
        i => i["FileRef"],
        i => i["VideoSetDescription"],
        i => i["Live_x0020_Date"],
        i => i["Expiration_x0020_Date0"],
        i => i["Is_x0020_Active"],
        i => i["Tags"],
        i => i["AlternateThumbnailUrl"]
        )
    );

context.ExecuteQuery();

如果不是这种情况，请告诉我，我将启动一个项目，我在桌面上做过类似的事情。

"Already Exists" 使用 CSOM 获取 SharePoint 2013 库项目时抛出异常

"Already Exists" Exception thrown when Getting SharePoint 2013 Library items using CSOM

c#

sharepoint

console-application

csom