Question

我使用以下方法从网站获取响应流 -

HttpWebRequest request;
WebResponse response;

private void button1_Click(object sender, RoutedEventArgs e)
    {

        string url = textBox1.Text;
        request = WebRequest.Create(url) as HttpWebRequest;
        request.BeginGetResponse(AfterRequest, null);

    }

    public void AfterRequest(IAsyncResult result)
    {

            response = request.EndGetResponse(result);
            using (StreamReader sd = new StreamReader(response.GetResponseStream()))
            {
                string resultString = sd.ReadToEnd();
            }
            response.Close();

    }

然而，代码在到达时会中断 -

response = request.EndGetResponse(result);

出现错误信息 -

SecurityException was unhandled by user code

导致此问题的原因是什么？

听到完全例外 -

System.Security.SecurityException ---> System.Security.SecurityException: Security error.
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult     asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClassa.    <EndGetResponse>b__9(Object sendState)
at System.Net.Browser.AsyncHelper.<>c__DisplayClass4.<BeginOnUI>b__1(Object sendState)
--- End of inner exception stack trace ---
at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object     state)
at System.Net.Browser.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.WebClient.GetWebResponse(WebRequest request, IAsyncResult result)
at System.Net.WebClient.DownloadBitsResponseCallback(IAsyncResult result)

Answer 1

如果您需要在Silverlight中从其他网站/域提供内容，请查看以下指南：

http://msdn.microsoft.com/en-us/library/cc197955(v=vs.95).aspx

我希望这会有所帮助。

Answer 2

我通过创建一个Web方法解决了这个问题，该方法完全按照前端代码在后端Web服务中执行的操作，然后在前端调用它，我已经通过添加这些文件来实现跨域访问策略先前。

安全例外未处理

2 个答案: