C# - 将文件作为附件添加到 Microsoft.SharePoint.Client.ListItem (SharePoint 2010)

Question

我没有更多的想法。我想为 Sharepoint 列表创建一个新元素并添加一个文件作为附件。我可以用 ListItem 创建一个新元素。但是文件不会上传。

我尝试使用 SaveBinaryDirect() 函数和 AttachmentCreationInformation() class。如果我尝试我得到这个异常

Exception thrown: 'System.Net.WebException' in System.dll (400)

我还连接到 SharePoint Server 并查看了 Windows 日志，但一无所获。

在我的代码中，我添加了一个新的 ListItem 和 lLibrary.AddItem(itemCreateInfo)。使用 ListItem 我在 SharePoint 中创建了一个新元素。此元素位于 SharePoint 文件夹中。这一切都很好。

我尝试了很多，但没有任何效果。我需要帮助，拜托！

这是我的完整代码：

public bool UploadToSharepoint(string sURL, string sLibrary, string sFolderName, string sTitel, string sDescription, string sFilePath)
    {
        using (ClientContext clientContext = new ClientContext(sURL))
        {
            if (!SetCredentialsInClientContext(clientContext))
            {
                return false;
            }

            List lLibrary = clientContext.Web.Lists.GetByTitle(sLibrary);

            clientContext.Load(clientContext.Web.Lists);
            clientContext.Load(lLibrary, l => l.RootFolder.ServerRelativeUrl);

            clientContext.ExecuteQuery();

            ListItemCreationInformation itemCreateInfo = new ListItemCreationInformation();
            if (!string.IsNullOrEmpty(sFolderName))
            {
                itemCreateInfo.FolderUrl = lLibrary.RootFolder.ServerRelativeUrl + "/" + sFolderName;
            }

            ListItem newItem = lLibrary.AddItem(itemCreateInfo);

            #region Work only with Document list in SharePoint
            //using (FileStream fs = new FileStream(sFilePath, FileMode.Open))
            //{
            //    clientContext.Load(lLibrary.RootFolder);
            //    clientContext.ExecuteQuery();
            //    string fileUrl = string.Format("{0}/{1}", lLibrary.RootFolder.ServerRelativeUrl, fi.Name);
            //    Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, fileUrl, fs, true);
            //}  // Ende using 'FileStream'
            #endregion

            using (FileStream fs = new FileStream(sFilePath, FileMode.Open))
            {
                #region WORK!
                newItem["Title"] = sTitel;
                newItem["Description"] = sDescription;
                newItem.Update();
                clientContext.ExecuteQuery();
                #endregion

                #region SaveBinaryDirect Example NOT WORK
                //using (FileStream strm = new FileInfo(sFilePath).Open(FileMode.Open))
                //{
                //    Uri url = new Uri(sURL);
                //    //Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, url.AbsolutePath + "/Attachments/" + newItem.Id + "/" + fi.Name, strm, true);
                //    Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, lLibrary.RootFolder.ServerRelativeUrl + "/Attachments/" + newItem.Id + "/" + fi.Name, strm, true);
                //}

                ////Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, "", fs, true);
                //string serverRelativeUrl = lLibrary.RootFolder.ServerRelativeUrl;
                //Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, serverRelativeUrl, fs, true);
                #endregion

                #region AttachmentCreationInformation Example NOT WORK
                AttachmentCreationInformation attInfo = new AttachmentCreationInformation();
                attInfo.FileName = fs.Name;
                attInfo.ContentStream = fs;
                newItem.AttachmentFiles.Add(attInfo);
                newItem.Update();
                clientContext.ExecuteQuery();
                #endregion
            }
        }
        return true;
    }

编辑！：

我犯了一个大错。 Sharepoint 是 2010 年的。所以 AttachmentFiles.Add() 函数不起作用。

我发现我必须添加服务引用并更改我的代码。如需更多信息，请访问 SharePoint 2010 - Client Object Model - Add attachment to ListItem

但现在我收到异常 500。这就是我尝试连接到测试 SharePoint 的原因。在那里我可以阅读消息 The list does not exist. The selected page contains a list that does not exist. The list could have been deleted by another user.

的日志信息

我不知道什么 listName 属性我必须为找到列表的函数 AddAttachment() 指定。

我的新密码：

public bool UploadToSharepoint(string sURL, string sLibrary, string sFolderName, string sTitel, string sDescription, string sFilePath)
    {
        using (ClientContext clientContext = new ClientContext(sURL))
        {
            if (!SetzeCredentialsInClientContext(clientContext))
            {
                return false;
            }

            List lLibrary = clientContext.Web.Lists.GetByTitle(sLibrary);

            clientContext.Load(lLibrary);
            clientContext.Load(lLibrary.RootFolder);
            clientContext.ExecuteQuery();

            ListItemCreationInformation listItemCreationInformation = new ListItemCreationInformation();
            if (!string.IsNullOrEmpty(sFolderName))
            {
                listItemCreationInformation.FolderUrl = lLibrary.RootFolder.ServerRelativeUrl + "/" + sFolderName;
            }

            var newItem = lLibrary.AddItem(listItemCreationInformation);
            newItem["Title"] = sTitel;
            newItem.Update();
            clientContext.ExecuteQuery();

            clientContext.Load(newItem);
            clientContext.ExecuteQuery();

            TestSP.ListsSoapClient lsc = new TestSP.ListsSoapClient();

            if (_cbAutorisierung.Checked)
            {
                lsc.ClientCredentials.Windows.ClientCredential = new NetworkCredential(tbName.Text, tbPasswort.Text, tbDomain.Text);
            }
            else
            {
                lsc.ClientCredentials.Windows.ClientCredential = CredentialCache.DefaultNetworkCredentials;
            }
            lsc.AddAttachment(sLibrary, newItem["ID"].ToString(), Path.GetFileName(sFilePath), System.IO.File.ReadAllBytes(sFilePath));

        }
        return true;
    }

Answer 1

请尝试以下代码。修改了文件夹 url 的构成方式。还修改了一些附件上传相关的代码。

在 sUrl 中，请传递您网站集的完整 url。

var list = web.Lists.GetByTitle(sLibrary);
clientContext.Load(list);
clientContext.ExecuteQuery();

ListItemCreationInformation listItemCreationInformation = null;
if (!string.IsNullOrEmpty(sFolderName))
{
    listItemCreationInformation = new ListItemCreationInformation();
    listItemCreationInformation.FolderUrl = string.Format("{0}Lists/{1}/{2}", sURL, sLibrary, sFolderName);
}

var listItem = list.AddItem(listItemCreationInformation);
newItem["Title"] = sTitel;
newItem["Description"] = sDescription;
listItem.Update();
clientContext.ExecuteQuery();                

using (FileStream fs = new FileStream(sFilePath, FileMode.Open))
{
    var attInfo = new AttachmentCreationInformation();
    attInfo.FileName = fs.Name;
    attInfo.ContentStream = fs;                    

    var att = listItem.AttachmentFiles.Add(attInfo);
    clientContext.Load(att);
    clientContext.ExecuteQuery();
}

Answer 2

我终于开始工作了！

问题是在配置文件中 App.Config 端点地址显式引用站点。

"config" 文件的一部分：

<system.serviceModel>
<bindings>
  <basicHttpsBinding>
    <binding name="ListsSoap">
      <security>
        <transport clientCredentialType="Ntlm" proxyCredentialType="Ntlm" />
      </security>
    </binding>
  </basicHttpsBinding>
</bindings>
<client>
  <endpoint address="https://TestSharePoint.com/_vti_bin/lists.asmx"
    binding="basicHttpsBinding" bindingConfiguration="ListsSoap"
    contract="SPRivarkom.ListsSoap" name="ListsSoap" />
</client>
</system.serviceModel>

标签 "endpoint" 处是属性 "adress"。这包含 Web 引用的地址。但是正确的地址必须是address="https://TestSharePoint.com/TestSite/TestUnderSite/_vti_bin/lists.asmx".

C# - 将文件作为附件添加到 Microsoft.SharePoint.Client.ListItem (SharePoint 2010)

C# - Add a File as Attachment to Microsoft.SharePoint.Client.ListItem (SharePoint 2010)

c#

sharepoint

splistitem

sharepoint-2010

sharepoint-clientobject