在后台获取ashx返回的数据

public static string GetRequestJsonString(string relativePath, string data)
    {
        string requestUrl = GetRequestUrl(relativePath, data);

        try
        {
            WebRequest request = WebRequest.Create(requestUrl);
            request.Method = "GET";

            StreamReader jsonStream = new StreamReader(request.GetResponse().GetResponseStream());
            string jsonObject = jsonStream.ReadToEnd();

            return jsonObject;
        }
        catch 
        {
            return  string.Empty;
        }        
    }

 

补充：    public static string GetRequestUrl(string relativePath, string data)

    {
        string absolutePath = HttpContext.Current.Request.Url.AbsoluteUri;
        string hostNameAndPort = HttpContext.Current.Request.Url.Authority;
        string applicationDir = HttpContext.Current.Request.ApplicationPath;
        StringBuilder sbRequestUrl = new StringBuilder();

        sbRequestUrl.Append(absolutePath.Substring(0, absolutePath.IndexOf(hostNameAndPort)));
        sbRequestUrl.Append(hostNameAndPort);
        sbRequestUrl.Append(applicationDir);
        sbRequestUrl.Append(relativePath);

        if (!string.IsNullOrEmpty(data))
        {
            sbRequestUrl.Append("?");
            sbRequestUrl.Append(data);
        }

        return sbRequestUrl.ToString();

    } 

 使用示例：string strData= "pageIndex=1&pageSize=15";            

        string strResult = GetRequestJsonString("ashx/SearchProduct.ashx", strData);