XamlReader.Parse抛出"给定编码中的无效字符"

Question

我有以下代码的问题:

using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
    var content = reader.ReadToEnd();
    ParserContext context = new ParserContext()
    {
        BaseUri = new Uri(Configuration.SkinsFolder)
        //,XmlLang = "utf-8" // I have tried with this parameter and without it
    };
    var result = XamlReader.Parse(content, context);
    return result;
}

相应的xaml,出现问题:

...
<TextBlock>??????? ???????</TextBlock>
<TextBlock Text="?? ????" />
...

在解析这个xaml期间,我得到了异常:

Invalid character in the given encoding. Line 76, position 167.
   at System.Windows.Markup.XamlReaderHelper.RethrowAsParseException(String keyString, Int32 lineNumber, Int32 linePosition, Exception innerException)
   at System.Windows.Markup.XamlReaderHelper.Read(XamlNode& xamlNode)
   at System.Windows.Markup.XamlParser.ReadXaml(Boolean singleRecordMode)
   at System.Windows.Markup.XamlParser._Parse()
   at System.Windows.Markup.XamlParser.Parse()

Xaml文件保存为utf-8

谁知道如何加载这个xaml没有这样的问题？提前致谢!

PS:好的,我找到了问题的根源.

加载xaml的正确方法是使用XamlReader.Load方法而不是XamlReader.Parse.在我的情况下,它似乎:

using (Stream stream = new FileStream(source, FileMode.Open))
{
    ParserContext context = new ParserContext()
    {
        BaseUri = new Uri(Configuration.SkinsFolder)
    };
    var result = XamlReader.Load(stream, context);
    return result;
}

谢谢大家!

Answer 1

我对德语元音变音字符也遇到了同样的问题。我认为 .NET Framework 中存在错误。尝试使用此函数而不是 XamlReader.Parse(content, context)：

public static object Parse(string xamlText, ParserContext parserContext)
{
  return System.Windows.Markup.XamlReader.Load((Stream) new MemoryStream(Encoding.UTF8.GetBytes(xamlText)), parserContext);
}