用WebClinet实现SharePoint上文档库中文件的上传与下载

using System;
using System.IO;
using System.Net;
using System.Collections.Specialized;

namespace SharePointVisitUtilities
{
public static class SharePointFileHelper
{
// 上传文件
//
// 参数
// 上传的文件在SharePoint上的位置，要上传的本地文件的路径名，用户名，密码，域
public static string UploadFile(string strDestUrl, string strFilePathName, string strUserName, string strPassword, string strDomain)
{
string strResult = "Success";

try
{
string strFileName = Path.GetFileName(strFilePathName);
string strCopiedFilePathName = Path.GetTempPath() + strFileName;

// 将文件拷贝到临时文件夹
// 目的是可以在文件在被打开状态下还可以上传
File.Copy(strFilePathName, strCopiedFilePathName, true);

// 打开拷贝到临时目录下的文件
FileStream fs = new FileStream(strCopiedFilePathName, FileMode.Open, FileAccess.Read);

// 读文件
BinaryReader br = new BinaryReader(fs);
Byte[] filecontents = br.ReadBytes((int)fs.Length);

br.Close();
fs.Close();

WebClient webclient = CreateWebClient(strUserName, strPassword, strDomain);

// 上传
webclient.UploadData(strDestUrl + strFileName, "PUT", filecontents);
}
catch (Exception ex)
{
strResult = "Failed! " + ex.Message;
}

return strResult;
}

// 下载文件
//
// 参数
// 下载的文件在SharePoint上的位置，文件下载后存放的本地文件夹路径，用户名，密码，域
public static string DownloadFile(string strSourceUrl, string strDestFolder, string strUserName, string strPassword, string strDomain)
{
string strResult = "Success";

try
{
WebClient webclient = CreateWebClient(strUserName, strPassword, strDomain);

// 下载
Byte[] filecontents = webclient.DownloadData(strSourceUrl);

string strFileName = Path.GetFileName(strSourceUrl);

// 创建文件
FileStream fs = new FileStream(strDestFolder + strFileName, FileMode.Create, FileAccess.Write);
// 写文件
fs.Write(filecontents, 0, filecontents.Length);
fs.Close();
}
catch (Exception ex)
{
strResult = "failed! " + ex.Message;
}

return strResult;
}

// 创建WebClient
// 参数：用户名，密码，域（用来登陆SharePoint）
private static WebClient CreateWebClient(string strUserName, string strPassword, string strDomain)
{
WebClient webclient = new WebClient();

if (String.IsNullOrEmpty(strUserName))
{
webclient.UseDefaultCredentials = true;
}
else
{
NetworkCredential credential = new NetworkCredential(strUserName, strPassword, strDomain);
webclient.Credentials = credential;
}

return webclient;
}
}
}