按字段设置属性Promotion Demotion [英] Set property Promotion Demotion by field

问题描述

是否有指定文档库中的某些字段不参与属性提升降级？我正在开发自定义事件接收器，我不希望某个受系统保护的字段由上传的.docx文件中的值包含。

Are there anyway to specify that certain fields in document library do not participate in property promotion demotion? I am developing custom event receivers and I do not want certain system protected fields to be set by value contains in .docx file uploaded.

推荐答案

嗨GuYuming，

Hi GuYuming,

如果要在上传文档后使某些字段未设置值，可以在事件接收器中添加ItemAdded事件接收器，使用SPListeItem对象覆盖项值为空，例如，使系统标题字段没有设置值，将
留空：

If you want to make some field not set value after uploading the document, you could add a ItemAdded Event Receiver, in the Event Receiver, use SPListeItem Object to Override the item value to empty, for example make system Title field not set value, leave it empty:

 public override void ItemAdded(SPItemEventProperties properties)
        {
            base.ItemAdded(properties);
            properties.ListItem["Title"] = "";
        }

谢谢

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