c# - 如何正确地将 iso-8859-1 转换为 utf8？

Question

我需要将响应流写入文件。该流包含一个编码页面 (iso-8859-1)。

这是我的代码:

...

using (TextWriter writer = new StreamWriter(tmpFilePath))
{
  using (TextReader reader = new StreamReader(answer, Encoding.GetEncoding("ISO-8859-1")))
  {

    string line = "";
    while ((line = reader.ReadLine()) != null) 
    {

      // try to decode
      string decoded_line = decode(line);

      writer.WriteLine(decoded_line);
    }

  }

}

...


string decode(string message) 
{
  string result = "";

  Encoding iso = Encoding.GetEncoding("iso-8859-1");
  Encoding utf8 = Encoding.UTF8;

  byte[] isoBytes = iso.GetBytes(message);
  byte[] utf8Bytes = Encoding.Convert(iso, utf8, isoBytes);

  result = utf8.GetString(utf8Bytes);

  return result;
}

问题是 decode() 不工作

如何正确地将 iso-8859-1 转换为 utf8？

更新

我依靠 fiddler 来获取内容类型:

Answer 1

鉴于这种情况，应该足以:

using (TextWriter writer = new StreamWriter(tmpFilePath, Ecoding.UTF8))
{
 using (TextReader reader = new StreamReader(answer, Encoding.GetEncoding("ISO-8859-1")))
 {
   while ((line = reader.ReadLine()) != null) 
   {
      writer.WriteLine(decoded_line);
   }
 }    
}

如果这不起作用，请检查您的数据。 (第一)行在调试器中看起来如何？