更新Sharepoint任务项的ExtendedProperties或Approval Comments

Question

我正在尝试使用CSOM以编程方式更新SharePoint任务。我能够成功批准任务，但不确定如何更新评论。

可以使用ExtendedProperties作为HashTable检索注释，但我无法设置其值。如何更新审批意见？

以下是批准任务的代码：

using (ClientContext ctx = new ClientContext("http://abc/sites/TLS/low"))
{
Web web = ctx.Web;
List oList = web.Lists.GetByTitle("Tasks");
ListItem listitem = oList.GetItemById(784);
ctx.Load(listitem);
ctx.ExecuteQuery();
Hashtable ht = GetExtendedPropertiesAsHashtable(listitem);
listitem["Completed"] = true;
listitem["PercentComplete"] = 1;
listitem["Status"] = "Approved";
listitem["WorkflowOutcome"] = "Approved";
listitem["FormData"] = "Completed";
//listitem["__ModerationComments"] = "Sdfs";
//listitem["ows_FieldName_Comments"] = "Sdfs";
//ht["ows_FieldName_Comments"] = "sdsds";
listitem.Update();
ctx.ExecuteQuery();
}

以下是获取任务项的ExtendedProperties的代码：

public static Hashtable GetExtendedPropertiesAsHashtable(ListItem task)
{
if (task == null)
{
throw new ArgumentNullException();
}
Hashtable properties = new Hashtable();
string extProperties = (string)task["ExtendedProperties"];
if (!string.IsNullOrEmpty(extProperties))
{
var reader = new XmlTextReader(new StringReader("<Root " + extProperties + " />"))
{
WhitespaceHandling = WhitespaceHandling.Significant
};
reader.MoveToContent();
if (!reader.HasAttributes)
{
return properties;
}
while (reader.MoveToNextAttribute())
{
string propName = reader.Name.Substring(4);
properties[propName] = reader.Value;
}
}
return properties;
}

Answer 1

您可以尝试更新审批注释：

listitem["ExtendedProperties"] = "ows_FieldName_Comments='comment' ";