.net get post 传递参数 获取返回值

    /// 

    /// post调用接口(utf8形式)
    /// 
    /// url
    /// 参数
    /// 
    public static string PostModel(string strUrl, string strParm)
    {
        Encoding encode = Encoding.UTF8;

        byte[] arrB = encode.GetBytes(strParm);
        string strBaseUrl = null;

        HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(strUrl);
        myReq.Method = "POST";
        myReq.ContentType = "application/x-www-form-urlencoded";
        myReq.ContentLength = arrB.Length;
        Stream outStream = myReq.GetRequestStream();
        outStream.Write(arrB, 0, arrB.Length);
        outStream.Close();
        WebResponse myResp = null;
        try
        {
            //接收HTTP做出的响应  
            myResp = myReq.GetResponse();
        }
        catch (Exception e)
        {
            int ii = 0;
        }
        Stream ReceiveStream = myResp.GetResponseStream();
        StreamReader readStream = new StreamReader(ReceiveStream, encode);
        Char[] read = new Char[256];
        int count = readStream.Read(read, 0, 256);
        string str = null;
        while (count > 0)
        {
            str += new String(read, 0, count);
            count = readStream.Read(read, 0, 256);
        }
        readStream.Close();
        myResp.Close();
        return str;
    }

    /// 

    /// get调用接口
    /// 
    /// url
    /// 
    private string GetModel(string strUrl)
    {
        string strRet = null;
        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
            request.Timeout = 2000;
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            System.IO.Stream resStream = response.GetResponseStream();
            Encoding encode = System.Text.Encoding.Default;
            StreamReader readStream = new StreamReader(resStream, encode);

            Char[] read = new Char[256];
            int count = readStream.Read(read, 0, 256);
            while (count > 0)
            {
                String str = new String(read, 0, count);
                strRet = strRet + str;
                count = readStream.Read(read, 0, 256);
            }

            resStream.Close();
        }
        catch (Exception e)
        {
            strRet = "";
        }
        return strRet;
    }