c# - 更新的 listitem 属性未提交对 sharepoint 的更改

Question

我正在将文档上传到 Sharepoint.. 但是我想提供一个自定义名称而不是它继承我正在上传的文件的名称。

我的代码基于这个解决方案:http://www.codeproject.com/Articles/103503/How-to-upload-download-a-document-in-SharePoint-20.aspx

但是这不起作用。

此外，我还想提供文件的标题:所以我想更新标题:

uploadFile.ListItemAllFields.FieldValues["Title"] = "my custom title";

但是，一旦文件完成上传..我登录到 Sharepoint 并注意到标题尚未应用。

我如何整合上传文件和应用新名称？

非常感谢，

编辑:

        using (var clientContext = GetNewContext())
        {
            var uploadLocation = string.Format("{0}{1}/{2}", SiteUrl, Helpers.ListNames.RequestedDocuments, Path.GetFileName(document));

            //Get Document List
            var documentslist = clientContext.Web.Lists.GetByTitle(Helpers.ListNames.RequestedDocuments);

            var fileCreationInformation = new FileCreationInformation
            {
                Content = System.IO.File.ReadAllBytes(document), //Assign to content byte[] i.e. documentStream
                Overwrite = true, //Allow owerwrite of document
                Url = uploadLocation //Upload URL,

            };

            var uploadFile = documentslist.RootFolder.Files.Add(fileCreationInformation);

            uploadFile.ListItemAllFields.FieldValues["Title"] = title;

            uploadFile.ListItemAllFields.Update();

            clientContext.ExecuteQuery();           
        }
        site.SubmitChanges(ConflictMode.FailOnFirstConflict, true);

Answer 1

将文件添加到文件集合后，您缺少对 clientContext.Load 的调用。有关更多信息，请参阅这些博客文章:

https://www.c-sharpcorner.com/code/965/programmatically-upload-document-using-client-object-model-in-sharepoint.aspx

https://zimmergren.net/sp-2010-uploading-files-using-the-client-om-in-sharepoint-2010/

此代码示例来自上面链接的第一篇博文:

public Boolean UploadDocument(String fileName, String filePath, List metaDataList)   
{  
    SP.ClientContext ctx = new SP.ClientContext("http: //yoursharepointURL");  
    Web web = ctx.Web;  
    FileCreationInformation newFile = new FileCreationInformation();  
    newFile.Content = System.IO.File.ReadAllBytes(@"C: \TestFile.doc");  
    newFile.Url = " / " + fileName;  
    List docs = web.Lists.GetByTitle("Shared Documents");  
    Microsoft.SharePoint.Client.File uploadFile = docs.RootFolder.Files.Add(newFile);  
    context.Load(uploadFile);  
    context.ExecuteQuery();  
    SPClient.ListItem item = uploadFile.ListItemAllFields;  
    //Set the metadata  
    string docTitle = string.Empty;  
    item["Title"] = docTitle;  
    item.Update();  
    context.ExecuteQuery();  
}