using System;
using System.IO;
using System.Net;
using System.Text;

public class MyWebRequest
{
    private WebRequest request;
    private Stream dataStream;

    private string status;

    public String Status
    {
        get
        {
            return status;
        }
        set
        {
            status 
 
= value;
        }
    }

    /// <summary>
    /// 直接請求的
    /// </summary>
    /// <param name="url"></param>
    public MyWebRequest(string url)
    {
        // Create a request using a URL that can receive a post.

        request = WebRequest.Create(url);
    }


    /// <summary>
    ///
 
 不帶引數的get/post
    /// </summary>
    /// <param name="url"></param>
    /// <param name="method"></param>
    public MyWebRequest(string url, string method)
        : this(url)
    {

        if (method.Equals("GET") || method.Equals("POST"))
        {
            // Set the Method property of the request to POST.
 

            request.Method = method;
        }
        else
        {
            throw new Exception("Invalid Method Type");
        }
    }

    /// <summary>
    /// 帶引數的get/post
    /// </summary>
    /// <param name="url"></param>
    /// <param name="method"></param>
    /// <param name="data"></param>
    /// <param name="contentType">用下面的HttpContentType類中的常量</param>
    public MyWebRequest(string url, string method, string data, string contentType)
        : this(url, method)
    {

        // Create POST data and convert it to a byte array.
        string postData = data;
        byte[] byteArray = Encoding.UTF8.GetBytes(postData);

        // Set the ContentType property of the WebRequest.
        //request.ContentType = "application/x-www-form-urlencoded";
        request.ContentType = contentType;

        // Set the ContentLength property of the WebRequest.
        request.ContentLength = byteArray.Length;

        // Get the request stream.
        dataStream = request.GetRequestStream();

        // Write the data to the request stream.
        dataStream.Write(byteArray, 0, byteArray.Length);

        // Close the Stream object.
        dataStream.Close();

    }

    public string GetResponse()
    {
        WebResponse response = request.GetResponse();
        this.Status = ((HttpWebResponse)response).StatusDescription;
        dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream);
        string responseFromServer = reader.ReadToEnd();

        //釋放
        reader.Close();
        dataStream.Close();
        response.Close();

        return responseFromServer;//返回資料
    }


    /// <summary>
    /// HTTP 內容型別(Content-Type)
    /// </summary>
    public class HttpContentType
    {
        /// <summary>
        /// 資源型別：普通文字
        /// </summary>
        public const string TEXT_PLAIN = "text/plain";

        /// <summary>
        /// 資源型別：JSON字串
        /// </summary>
        public const string APPLICATION_JSON = "application/json";

        /// <summary>
        /// 資源型別：未知型別(資料流)
        /// </summary>
        public const string APPLICATION_OCTET_STREAM = "application/octet-stream";

        /// <summary>
        /// 資源型別：表單資料(鍵值對)
        /// </summary>
        public const string WWW_FORM_URLENCODED = "application/x-www-form-urlencoded";

        /// <summary>
        /// 資源型別：表單資料(鍵值對)。編碼方式為 gb2312
        /// </summary>
        public const string WWW_FORM_URLENCODED_GB2312 = "application/x-www-form-urlencoded;charset=gb2312";

        /// <summary>
        /// 資源型別：表單資料(鍵值對)。編碼方式為 utf-8
        /// </summary>
        public const string WWW_FORM_URLENCODED_UTF8 = "application/x-www-form-urlencoded;charset=utf-8";

        /// <summary>
        /// 資源型別：多分部資料
        /// </summary>
        public const string MULTIPART_FORM_DATA = "multipart/form-data";
    }
}