無法更新SharePoint發布頁面圖像

Question

我正在嘗試更新發布頁面圖像的url，但是執行查詢命令后卻以某種方式進行了更新。 其值另存為null

        ClientContext targetContext = new ClientContext ("REAL URL");
        Microsoft.SharePoint.Client.File targetFile = targetContext.Web.GetFileByServerRelativeUrl ("REAL URL");
        var targetPublishingPage = PublishingPage.GetPublishingPage (targetContext, targetFile.ListItemAllFields);
        targetContext.Load (targetPublishingPage.ListItem);
        targetContext.ExecuteQuery ();
        targetFile.CheckOut ();
        targetPublishingPage.ListItem["PublishingPageImage"] = "REAL URL";
        targetPublishingPage.ListItem.Update ();
        targetContext.ExecuteQuery ();

Answer 1

預計發布格式字段值應采用以下格式： <img src='{imageurl}'>

例

using (var ctx = new ClientContext(webUri))
{
    var pageFile = ctx.Web.GetFileByServerRelativeUrl(pageUrl);
    var pageItem = pageFile.ListItemAllFields;
    pageItem["PublishingPageImage"] = "<img src='/PublishingImages/PageLogo.png'>";
    pageItem.Update();
    ctx.ExecuteQuery();
}