C# - 当 webRequest 发送 XML 时，将 Base64 安全为 Gif？

Question

我发送了一个 WebRequest，并在我的内容中得到了一个带有 XML 代码的字符串作为响应。

        WebRequest request = WebRequest.Create("...");
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream);
        string responseFromServer = reader.ReadToEnd();

        byte[] bytes = Convert.FromBase64String(responseFromServer);

        Image image;
        using (MemoryStream ms = new MemoryStream(bytes))
        {
            image = Image.FromStream(ms);
        }

        image.Save("File", System.Drawing.Imaging.ImageFormat.Gif);

问题是“Convert.FromBase64String(responseFromServer)”无法转换为 Base 64，因为响应是:

       "<string xmlns="*LINK*"> 'content' </string>"

我可以删除这些标签，或者复制内容吗？

我希望你能解决我的问题:)感谢您的帮助，对于糟糕的英语感到抱歉x)

Answer 1

您可以使用 XmlDocument..

        WebRequest request = WebRequest.Create("...");
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream);
        XmlDocument doc = new XmlDocument();
        doc.Load(reader);
        byte[] bytes = Convert.FromBase64String(doc.GetElementsByTagName("string")[0].InnerText);

        System.Drawing.Image image;
        using (MemoryStream ms = new MemoryStream(bytes))
        {
            image = System.Drawing.Image.FromStream(ms);
        }