获取 SharePoint API 中以“_”开头的项目列表

Question

API Call: "https://tponline.sharepoint.com/sites/tc-g-learning/_api/web/lists/GetByTitle('Documents - Learning Centre')/items?$select=_DisplayName,Title,Modified_x0020_By"

When only "Title" or "Modified_x0020_By" is filtered, then the result is returned where as if we pass _DisplayName it says error. But when we call API to get list of all item names using 'https://tponline.sharepoint.com/sites/tc-g-learning/_api/web/lists/GetByTitle(''Documents - Learning Centre'')/Fields?$select=Title,InternalName' then we can see _DisplayName in return.

"{
    "odata.error": {
        "code": "-1, Microsoft.SharePoint.SPException",
        "message": {
            "lang": "en-US",
            "value": "The field or property '_DisplayName' does not exist."
        }
    }
}"

Note: Tried with some of other items beginning with "_" then we get same error.

Answer 1

You can first hit the API URL for getting the fields only.

URL : https://tponline.sharepoint.com/sites/tc-g-learning/_api/web/lists/GetByTitle('Documents%20-%20Learning%20Centre')/Fields

Once you open this, you will see the internal name that is used by API for all the fields in the list.
I too had similar problem where my column name was and the internal name was

Hope that helps !!!