C#异步调用后如何看到状态码？
C#异步调用的代码如下：
public class DataRequest
{
public string paramData=string.Empty;//请求参数
public string resData=string.Empty;//返回值
public HttpStatusCode statusCode;//状态记录
public Exception errorAsync;//记录异步函数中的错误
public static Encoding dataEncode = Encoding.UTF8;//字符编码方式为UTF8
public void RequestURL(string url)
{
HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri(url));
webReq.Method = "POST";
webReq.ContentType = "application/x-www-form-urlencoded";
webReq.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), webReq);
}
private void GetRequestStreamCallback(IAsyncResult asynchronousResult)
{
try
{
HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;
Stream postStream = request.EndGetRequestStream(asynchronousResult);
byte[] byteArray = dataEncode.GetBytes(paramData);
postStream.Write(byteArray, 0, byteArray.Length);
postStream.Close();
request.BeginGetResponse(new AsyncCallback(GetResponseCallback), request);
}
catch (Exception ee)
{
errorAsync = ee;
}
}
private void GetResponseCallback(IAsyncResult asynchronousResult)
{
try
{
HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult);
Stream streamResponse = response.GetResponseStream();
StreamReader streamRead = new StreamReader(streamResponse);
statusCode=response.StatusCode;
resData = streamRead.ReadToEnd();
streamResponse.Close();
streamRead.Close();
}
catch (Exception ee)
{
errorAsync = ee;
}
}
}
DataRequest request = new DataRequest();
username = System.Net.HttpUtility.UrlEncode(username);
password = MD5CryptoServiceProvider.GetMd5String(password);
request.paramData = @"EMAIL=" + username + @"&PASSWORD=" + password + @"&debug=";
request.RequestURL(baseUrl + "login.php");
MessageBox.Show(request.statusCode.ToString());
