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，而不是继承我上传的文件的名称。

我的代码基于此解决方案： 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。

我如何集成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 Files 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客文章：

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();  
}

Answer 2

设置字段值后是否调用更新？

uploadFile.ListItemAllFields.Update();

Answer 3

而不是设置：

uploadFile.ListItemAllFields.FieldValues["Title"] = title;
uploadFile.ListItemAllFields.Update();

设置如下：

uploadFile.ListItemAllFields["Title"] = title;
uploadFile.ListItemAllFields.Update();