HttpFileCollection files = HttpContext.Current.Request.Files;
string filePath = files[0].FileName;
string fileName = filePath.Substring(filePath.LastIndexOf("http://") + 1);
byte[] datas = new byte[files[0].ContentLength];
System.IO.Stream fs;
localhost.WebService web = new localhost.WebService();
fs = (System.IO.Stream)files[0].InputStream;
//將輸入流讀入二維數組中
fs.Read(datas, 0, files[0].ContentLength);
fs.Close();
Response.Write(web.UploadFile(datas,fileName));

[WebMethod(Description="上傳服務器圖片信息，返回是否成功")]
public string UploadFile(byte[] fs,string fileName)
{
  //創建內存流 將數組寫入內存流中
  MemoryStream memory = new MemoryStream(fs);
  //把內存的東西寫入文件流中
  FileStream stream = new FileStream(HttpContext.Current.Server.MapPath(".") + "http://images" + fileName,FileMode.Create);
  //將內存流的東西寫入FileStream流中
  memory.WriteTo(stream);
  stream.Close();
  memory = null;
  stream = null;
  return "文件上傳成功!";
}