Sharepoint远程事件接收器更改项目的字段 [英] Sharepoint Remote Event Receiver Change fields for Item

问题描述

在列表/库的远程事件接收器中是否有可用的属性，我们可以在更新时检查哪个字段已更改？

In Remote event receiver for the list/library is there any property available where we can check which field has changed for Item while updating?

我尝试了 properties.ItemEventProperties.AfterProperties，但它获取了所有字段而不是仅更改字段

问候，

Prera​​k Desai

。

推荐答案

Hi Prera​​k，

Hi Prerak,

要确定SharePoint Remote Event Receiver中哪个字段已更改，它是必须将更新的字段值与
ItemUpdating 事件接收器中的原始值进行比较：

To figure out which field has changed in SharePoint Remote Event Receiver, it is necessary to compare the updated field value with the original value in ItemUpdating event receiver:

 Uri myurl = new Uri(properties.ItemEventProperties.WebUrl);
            using (ClientContext clientContext = new ClientContext(myurl))
            {
                if (clientContext != null)
                {
                    List lstContacts =
                        clientContext.Web.Lists.GetByTitle(
                            properties.ItemEventProperties.ListTitle
                        );
                    clientContext.Load(lstContacts);
                    clientContext.ExecuteQuery();


                    int cnt = lstContacts.ItemCount;

                    ListItem item = lstContacts.GetItemById(cnt);

                    clientContext.Load(item);
                    clientContext.ExecuteQuery();

                    var oldTitle = item["Title"].ToString();
                    var newTitle = properties.ItemEventProperties.AfterProperties["Title"].ToString();
                    if (oldTitle != newTitle)
                    {
                        //The title field has been changed
                    }
                }

这是一个类似的线程供您参考：

Here is a similiar thread for your reference:

通过RER中的CSOM获取ItemUpdated事件中的属性

谢谢

最好的问候

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