C#使用WebClient实现上传下载

Stream= client.OpenRead(serverUri)：

WebClient client = new WebClient();
client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
client.Encoding = Encoding.GetEncoding("gb2312");
client.Credentials = new NetworkCredential("csp", "welcome");

Stream data = client.OpenRead(url);//OpenRead为下载的数据打开一个只读的流
StreamReader reader = new StreamReader(data, Encoding.GetEncoding("gb2312"));
sting s = reader.ReadToEnd();
reader.Close();
return s;

byte[] data= client.DownloadData(serverUri)：

void client.DownloadFile(serverUri,localFile)：

string content =client.DownloadString(serverUri)：

WebClient client = new WebClient();
byte[] data = client.DownloadData(fileUrl);
var mc = Regex.Matches(Server.UrlDecode(client.ResponseHeaders["Content-Disposition"]), @"filename=(.+)");
string filename = mc[0].Groups[1].Value;

Strean =client.OpenWrite(serverUri);

byte[] =client.UploadData(serverUri,byte[]);

byte[] =client.UploadFile(serverUri,localFile);

WebClient client = new WebClient();
client.Encoding = Encoding.UTF8;
client.Credentials = new NetworkCredential("csp", "welcome");
client.UploadProgressChanged += new UploadProgressChangedEventHandler(UploadProgressCallback);
client.UploadFileCompleted += new UploadFileCompletedEventHandler(UploadFileCompletedCallback);

client.UploadFileAsync(new Uri(uriString + Path.GetFileName(localfileName)), null, localfileName, progressbarfrom);


/// 

/// 上传过程处理
/// 
/// 
/// 
private static void UploadProgressCallback(object sender, UploadProgressChangedEventArgs e)
{
    (e.UserState as ProgressBar).Value = e.ProgressPercentage;
}

private static void UploadFileCompletedCallback(object sender, UploadFileCompletedEventArgs e)
{
    if (e.Error == null)
        MessageBox.Show("完成上传");
    else
        throw e.Error;
}

byte[] =client.UploadValues(serverUri,namevalueCollection);