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    protected void Page_Load(object sender, EventArgs e)
    {
        Ajax.Utility.RegisterTypeForAjax(typeof(renzheng1));
    }
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2.ºǫ́´úÂëÖеÄwebservice
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//ext ÎļþÀ©Õ¹Ãû
//Æäʵ¾ÍÊǺǫ́´úÂëÖеÄÒ»¸öº¯Êý
 [Ajax.AjaxMethod()]
    public string RenZhengCom(string filePath,string ext)
    {
        string str = "/UploadFile/renzheng/" + Pq168Help.GenerateFileName()+ext;
            string SaveUrl = Server.MapPath(str);//ÉÏ´«µ½Ê²Ã´Î»ÖÃ
            WebClient myWebClient = new WebClient();//´´½¨WebClientʵÀý
            myWebClient.Credentials = CredentialCache.DefaultCredentials;//µÃµ½ÍøÂçÆ¾¾Ý
            FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
            BinaryReader r = new BinaryReader(fs);
            if (fs.Length / 1024 > 200)
            {
                return "ÄãÊäÈëµÄͼƬ´óÓÚ200k£¡";
            }
            byte[] postArray = r.ReadBytes((int)fs.Length);
            Stream postStream = myWebClient.OpenWrite(SaveUrl, "PUT");
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