C# HttpWebRequest错误403

我是C#新手，需要从C#检索url。大多数情况下，它工作正常，但在一个情况下，它抛出了一个错误。网址如下

错误为：

HTTP url请求中出现异常：远程服务器返回错误：（403）禁止

我的代码是

void MyFUnction(string url)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

    request.UserAgent = ".NET Framework Test Client";
    request.ContentType = "application/x-www-form-urlencoded";
    Logger.WriteMyLog("application/x-www-form-urlencoded");


    // execute the request
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    // we will read data via the response stream
    Stream resStream = response.GetResponseStream();

    string tempString = null;
    int count = 0;
    do
    {
        // fill the buffer with data
        count = resStream.Read(buf, 0, buf.Length);

        // make sure we read some data
        if (count != 0)
        {
            // translate from bytes to ASCII text
            tempString = Encoding.ASCII.GetString(buf, 0, count);
            if (httpData == null)
                httpData = tempString;
            else
                httpData += tempString;

        }
    }
    while (count > 0); // any more data to read?
}

---

删除ContentType行

request.ContentType....

您没有执行表单发布，只检索带有“GET”的页面

并将Accept属性设置为“text/html”

---

设置为格式化代码，在编辑器中选择它，然后按Control-K。这很好。在添加了三行initilization之后，我成功地做到了这一点：“webRequest.Method=“GET”；webRequest.UserAgent=“Foo”；webRequest.Accept=“text/html”虽然这篇文章很老了，但我今天（2016年10月15日）对它进行了更新投票，因为今天我在尝试学习网络垃圾时也遇到了类似的问题。我在stackoverflow上发布了这个问题，但有人指出已经有一个类似的问题，因此我删除并搜索了可用的答案。上面给出的答案对解决我自己的问题真的很有帮助。好的@Mikael Svenson

request.Method = "GET"; //this is the default behavior

request.Accept = "text/html";

request.Accept = "text/html";

void MyFunction(string url)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
    request.UserAgent = ".NET Framework Test Client";
    request.Accept = "text/html";
    Logger.WriteMyLog("application/x-www-form-urlencoded");

    // execute the request
    using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
    {
        // we will read data via the response stream
        Stream resStream = response.GetResponseStream();
        StreamReader streamReader = new StreamReader(
                                      resStream,
                                      Encoding.GetEncoding(response.CharacterSet)
                                    );
        httpData = streamReader.ReadToEnd();
    }
}