为什么Xdocument给我一个utf16声明? [英] why does the Xdocument give me a utf16 declaration?

问题描述

我正在创建一个像这样的XDocument:

i'm creating a XDocument like this:

XDocument doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"));

当我这样保存文档时( doc.Save(@"c:\ tijd \ file2.xml"); )，我得到了:

when i save the document like this (doc.Save(@"c:\tijd\file2.xml");) , i get this:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

没关系.

但是我想将内容作为xml返回，并且我发现了以下代码:

but i want to return the content as xml, and i found the following code:

 var wr = new StringWriter(); 
            doc.Save(wr); 
            string s = (wr.GetStringBuilder().ToString());

此代码有效，但字符串's'以此开头:

this code works, but then the string 's' starts with this:

<?xml version="1.0" encoding="utf-16" standalone="yes"?>

所以它从utf8更改为utf16，这不是我想要的，因为现在我无法在Internet Explorer中阅读它.

so it changed from utf8 to utf16, and that's not what i want, because now i can't read it in internet explorer.

有没有办法防止这种行为?

Is there a way to prevent this behaviour?

推荐答案

StringWriter 自我宣传为使用UTF-16.修复起来很容易:

StringWriter advertises itself as using UTF-16. It's easy to fix though:

public class Utf8StringWriter : StringWriter
{
    public override Encoding Encoding { get { return Encoding.UTF8; } }
}

在您的特定情况下就足够了.更加全面的实现会:

That should be enough in your particular case. A rather more well-rounded implementation would:

• 具有与 StringWriter
中的构造函数匹配的构造函数
• 也允许在构造函数中指定编码

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