用winform 上传文件到IIS7.5怎么弄
string fileNamePath = txtFileName.Text.Trim();
  string uriString = txtServerPath.Text.Trim();
  string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);
  string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
  if (uriString.EndsWith("/") == false) uriString = uriString + "/";
  uriString = uriString + fileName;
  WebClient myWebClient = new WebClient();
  myWebClient.Credentials = CredentialCache.DefaultCredentials;
  FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
  BinaryReader r = new BinaryReader(fs);
  try
  {
  byte[] postArray = r.ReadBytes((int)fs.Length);
  Stream postStream = myWebClient.OpenWrite(uriString, "PUT");
  if (postStream.CanWrite)
  {
  postStream.Write(postArray, 0, postArray.Length);
  label1.Text = fileName + "上传成功！";
  }
  else
  label1.Text = "文件目前不可写！";
  postStream.Close();
  linkLabel1.Text = "查看上载的文件";
  for (int i = linkLabel1.Links.Count - 1; i > -1; i--)
  linkLabel1.Links.Remove(linkLabel1.Links[i]);
  linkLabel1.Links.Add(0, linkLabel1.Text.Length, uriString);
  }catch (WebException errMsg){
  label1.Text = "上传失败：" + errMsg.Message;
  }string fileNamePath = txtFileName.Text.Trim();
  string uriString = txtServerPath.Text.Trim();
  string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\") + 1);
  string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
  if (uriString.EndsWith("/") == false) uriString = uriString + "/";
  uriString = uriString + fileName;
  WebClient myWebClient = new WebClient();
  myWebClient.Credentials = CredentialCache.DefaultCredentials;
  FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
  BinaryReader r = new BinaryReader(fs);
  try
  {
  byte[] postArray = r.ReadBytes((int)fs.Length);
  Stream postStream = myWebClient.OpenWrite(uriString, "PUT");
  if (postStream.CanWrite)
  {
  postStream.Write(postArray, 0, postArray.Length);
  label1.Text = fileName + "上传成功！";
  }
  else
  label1.Text = "文件目前不可写！";
  postStream.Close();
  linkLabel1.Text = "查看上载的文件";
  for (int i = linkLabel1.Links.Count - 1; i > -1; i--)
  linkLabel1.Links.Remove(linkLabel1.Links[i]);
  linkLabel1.Links.Add(0, linkLabel1.Text.Length, uriString);
  }catch (WebException errMsg){
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