asp.net网页请求发布参数

Question

使用下面的代码，我可以请求包含帖子参数的页面。但是请求的页面无法获取参数。我将两个文本框放到请求的页面并将参数发送到此页面。这段代码有什么问题？

private string PostForm(string _targetUrl, string _parameter1, string _parameter2)
{

    WebRequest request = WebRequest.Create(_targetUrl);

    request.Method = "POST";

    request.ContentType = "application/x-www-form-urlencoded";

    string postContent = string.Format("Textbox1={0}&Textbox2={1}", _parameter1, _parameter2);

    byte[] postContentBytes = Encoding.ASCII.GetBytes(postContent);

    request.ContentLength = postContentBytes.Length;

    Stream writer = request.GetRequestStream();

    writer.Write(postContentBytes, 0, postContentBytes.Length);

    writer.Close();

    HttpWebResponse testResponse = (HttpWebResponse)request.GetResponse();

    if (!testResponse.StatusDescription.Equals("OK", StringComparison.InvariantCultureIgnoreCase))
    {
        Response.Write("Error");
    }

    StreamReader sr = new StreamReader(testResponse.GetResponseStream());
    string returnvalue = sr.ReadToEnd();

    return returnvalue;
}

Answer 1

确保目标网页上文本框输入的“名称”为Textbox1和Textbox2。