我试图解析从此链接，但我得到一个异常类型的收到COMException 以下消息：

错误HRESULT E_FAIL已返回通过调用COM组件。

这里的code：

 尝试
        {
            // ...
            字符串EPGXML =等待DownloadAsync（URL）;

            VAR xmlDoc中=新的XmlDocument（）;
            xmldoc.LoadXml（EPGXML）; //此行引发异常
            //...rest的code
        }
        赶上（例外）
        {
            //我来到这里...
        }
 

能否请你帮我，为什么我得到这个消息，我该如何解决这一问题？谢谢你。

编辑：

我在读使用此功能（也许我错了，在这里，我应该做些什么来获取字符串中的UTF-8，因为我没有看到德国的字符字符串在调试中的XML源模式（监视窗口）：

 专用异步静态任务＆LT;字符串＆GT; DownloadPageAsync（字符串URL）
    {
        尝试
        {
            HttpClientHandler处理器=新HttpClientHandler（）;
            handler.UseDefaultCredentials = TRUE;
            handler.AllowAutoRedirect = TRUE;
            handler.UseCookies = TRUE;
            HttpClient的客户端=新的HttpClient（处理）;
            client.MaxResponseContentBufferSize =千万;
            HTT presponseMessage响应=等待client.GetAsync（URL）;
            response.EnsureSuccessStatus code（）;

            字符串responseBody = response.Content.ReadAsString（）;
            返回responseBody;
        }
        赶上（例外前）
        {
            回归错误+ ex.Message;
        }
    }
 

解决方案

您提供的XML是无效的，至少这就是火狐说：

ERREUR D'分析XML：MAL FORME   炮台：http://www.onlinetvrecorder.com/?aktion=epg_export&format=xml&btn_ok=OK&>stations=3SAT,ANIXE,ARD&from=30.11.2011&to=30.11.2011   NUMERO德LIGNE 218，Colonne的193：

（对不起，法文）

看起来有点接近，它看起来像单词Plötzlich分析器休息，在字符0。

您应该使用CDATA至prevent这样的：

 ＆LT;！[CDATA [您的文字这里可以包含特殊字符]]＆GT;
 

I'm trying to parse the xml document returned from this link but I get an exception of type ComException with the following message:

Error HRESULT E_FAIL has been returned from a call to a COM component.

Here's the code:

        try
        {
            //...
            string EPGXML = await DownloadAsync(url);

            var xmldoc = new XmlDocument();
            xmldoc.LoadXml(EPGXML); //this line throws the exception
            //...rest of the code
        }
        catch (Exception)
        {
            //I get here...
        }

Could you please help me why I get this message and how can I fix this? Thanks.

EDIT:

I'm reading the source of the XML using this function (maybe I'm wrong here and I should do something to get the string in UTF-8, because I don't see the German characters in the string in debug mode (watch window):

    private async static Task<string> DownloadPageAsync(string url)
    {
        try
        {
            HttpClientHandler handler = new HttpClientHandler();
            handler.UseDefaultCredentials = true;
            handler.AllowAutoRedirect = true;
            handler.UseCookies = true;
            HttpClient client = new HttpClient(handler);
            client.MaxResponseContentBufferSize = 10000000;
            HttpResponseMessage response = await client.GetAsync(url);
            response.EnsureSuccessStatusCode();

            string responseBody = response.Content.ReadAsString();
            return responseBody;
        }
        catch (Exception ex)
        {
            return "error" + ex.Message;
        }
    }

The XML you provided is not valid, at least that's what Firefox says:

Erreur d'analyse XML : mal formé Emplacement : http://www.onlinetvrecorder.com/?aktion=epg_export&format=xml&btn_ok=OK&>stations=3SAT,ANIXE,ARD&from=30.11.2011&to=30.11.2011 Numéro de ligne 218, Colonne 193 :

(Sorry for the french)

Looking a bit closer, it looks like the parser breaks on the word "Plötzlich", on the character "ö".

You should use CDATA to prevent this:

<![CDATA[Your text here can contain special chars]]>