winform上传文件至服务器

WebClient myWebClient = new WebClient();
myWebClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
byte[] post = myWebClient.UploadFile(服务器路径, "POST", 本地文件路径);

FileStream fs = new FileStream(本地文件路径, FileMode.Open, FileAccess.Read);
byte[] byteFile = new byte[fs.Length];
fs.Read(byteFile, 0, Convert.ToInt32(fs.Length));
fs.Close();
string postData = "filename=" + fileName + "&filecontent=" + (Encoding.UTF8.GetString(byteFile));
WebClient myWebClient = new WebClient();
myWebClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
byte[] post = myWebClient.UploadData(<span style="font-family: Arial, Helvetica, sans-serif;">服务器路径</span>, "POST", Encoding.UTF8.GetBytes(postData));

FileStream fs = new FileStream(本地文件路径, FileMode.Open, FileAccess.Read);
byte[] byteFile = new byte[fs.Length];
fs.Read(byteFile, 0, Convert.ToInt32(fs.Length));
fs.Close();System.Net.ServicePointManager.Expect100Continue = false;
System.Net.HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Timeout = 10000;
request.Method = "POST";
request.Headers.Set("Pragma", "no-cache");
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (Stream streamReceive = response.GetResponseStream())
using (StreamReader streamReader = new StreamReader(streamReceive, encoding))
{
string ret = streamReader.ReadToEnd();
}