使用CSOM批量更新​​Sharepoint列表项（ClientContext）

Question

在我的项目中，我想用CSOM批量更新​​列表项。但是，我无法发现任何相关信息。在我的搜索中，我发现SSOM不是CSOM。

        StringBuilder methodBuilder = new StringBuilder();
        string batch = string.Empty;
        string batchFormat = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
        "<Batch OnError=\"Return\">{0}</Batch>";

        string methodFormat = "<Method ID=\"{0}\">" +
        "<SetList>{1}</SetList>" +
        "<SetVar Name=\"Cmd\">Save</SetVar>" +
        "<SetVar Name=\"ID\">{2}</SetVar>" +
        "<SetVar Name=\"urn:schemas-microsoft-com:office:office#InstitutionType\">{3}</SetVar>" +
        "</Method>";
        SPList list = spWeb.Lists.TryGetList("Clients");
            SPQuery query = new SPQuery();
            query.Query = "<View/>";
            SPListItemCollection listItem = list.GetItems(query);

            foreach (SPListItem item in listItem)
            {
                methodBuilder.AppendFormat(methodFormat, item.ID, list.ID, item.ID, "None");
            }
            batch = string.Format(batchFormat, methodBuilder.ToString());

            string batchReturn = spWeb.ProcessBatchData(batch);