winForm读取本地文件并且上传到服务器（非FTP)

private void button1_Click(object sender, EventArgs e)
{

OpenFileDialog ofd = new OpenFileDialog();
ofd.Title = "打开(Open)";
ofd.FileName = "";
ofd.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);//为了获取特定的系统文件夹，可以使用System.Environment类的静态方法GetFolderPath()。该方法接受一个Environment.SpecialFolder枚举，其中可以定义要返回路径的哪个系统目录
ofd.Filter = "文本文件(*.txt)|*.txt";
ofd.ValidateNames = true;     //文件有效性验证ValidateNames，验证用户输入是否是一个有效的Windows文件名
ofd.CheckFileExists = true;  //验证路径有效性
ofd.CheckPathExists = true; //验证文件有效性
try
{
if (ofd.ShowDialog() == DialogResult.OK)
{
StreamReader sr = new StreamReader(ofd.FileName, System.Text.Encoding.Default);
// string ms = sr.ReadToEnd();
UpLoad u = new UpLoad();//调用方法

u.UpLoadFile(ofd.FileName, "F://", false);

}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}

}

/// <summary>
///
/// </summary>
/// <param name="fileNamePath">本地路径</param>
/// <param name="uriString">服务器路径</param>
/// <param name="IsAutoRename">FALSE</param>
public void UpLoadFile(string fileNamePath, string uriString, bool IsAutoRename)
{
string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);
string NewFileName = fileName;
if (IsAutoRename)
{
NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));
}

string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
if (uriString.EndsWith("/") == false) uriString = uriString + "/";

uriString = uriString + NewFileName;

//log.AddLog(uriString, "Log");
//log.AddLog(fileNamePath, "Log");
/**/
/// 创建WebClient实例
WebClient myWebClient = new WebClient();
myWebClient.Credentials = CredentialCache.DefaultCredentials;
// 要上传的文件
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
//FileStream fs = OpenFile();
BinaryReader r = new BinaryReader(fs);
byte[] postArray = r.ReadBytes((int)fs.Length);
Stream postStream = myWebClient.OpenWrite(uriString, "PUT");

try
{

//使用UploadFile方法可以用下面的格式
//myWebClient.UploadFile(uriString,"PUT",fileNamePath);

if (postStream.CanWrite)
{
postStream.Write(postArray, 0, postArray.Length);
postStream.Close();
fs.Dispose();

}
else
{
postStream.Close();
fs.Dispose();

}

}
catch (Exception err)
{
postStream.Close();
fs.Dispose();
//Utility.LogWriter log = new Utility.LogWriter();

throw err;
}
finally
{
postStream.Close();
fs.Dispose();
}
}