在保存()[复制]后，在XML文件的开始处获取“i»”

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这个问题已经有了答案:

How can I remove the BOM from XmlTextWriter using C#? 2 answers
如何使用c#从XmlTextWriter删除BOM ?2答案

I'm opening an existing XML file with C#, and I replace some nodes in there. All works fine. Just after I save it, I get the following characters at the beginning of the file:

我用c#打开一个现有的XML文件，并替换其中的一些节点。所有工作正常。在保存之后，我在文件的开头找到以下字符:

ï»¿  (EF BB BF in HEX)

The whole first line:

整个第一行:

 ï»¿<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

The rest of the file looks like a normal XML file. The simplified code is here:

文件的其余部分看起来像一个普通的XML文件。简化代码如下:

XmlDocument doc = new XmlDocument();
doc.Load(xmlSourceFile);
XmlNode translation = doc.SelectSingleNode("//trans-unit[@id='127']");
translation.InnerText = "testing";
doc.Save(xmlTranslatedFile);

I'm using a C# Windows Forms application with .NET 4.0.

我正在使用c# Windows窗体应用程序和。net 4.0。

Any ideas? Why would it do that? Can we disable that somehow? It's for Adobe InCopy, and it does not open it like this.

什么好主意吗?为什么会这样?我们能以某种方式禁用它吗?它是用于Adobe InCopy的，它不会像这样打开它。

UPDATE: Alternative Solution:

更新:可选择的解决方案:

Saving it with the XmlTextWriter works too:

使用XmlTextWriter保存它也可以:

XmlTextWriter writer = new XmlTextWriter(inCopyFilename, null);
doc.Save(writer);

4 个解决方案

#1

It is the UTF-8 BOM, which is actually discouraged by the Unicode standard:

它是UTF-8 BOM，它实际上被Unicode标准阻止了:

http://www.unicode.org/versions/Unicode5.0.0/ch02.pdf

http://www.unicode.org/versions/Unicode5.0.0/ch02.pdf

Use of a BOM is neither required nor recommended for UTF-8, but may be encountered in contexts where UTF-8 data is converted from other encoding forms that use a BOM or where the BOM is used as a UTF-8 signature

UTF-8既不需要也不推荐使用BOM，但在使用BOM的其他编码形式转换UTF-8数据或使用BOM作为UTF-8签名的环境中可能会遇到这种情况

You may disable it using:

您可以使用以下方式禁用它:

var sw = new IO.StreamWriter(path, new System.Text.UTF8Encoding(false));
doc.Save(sw);
sw.Close();

#2

It's a UTF-8 Byte Order Mark (BOM) and is to be expected.

它是一个UTF-8字节的顺序标记(BOM)，是可以预期的。

#3

You can try to change the encoding of the XmlDocument. Below is the example copied from MSDN

您可以尝试更改XmlDocument的编码。下面是从MSDN复制的示例

using System; using System.IO; using System.Xml;

public class Sample {

  public static void Main() {

    // Create and load the XML document.
    XmlDocument doc = new XmlDocument();
    string xmlString = "<book><title>Oberon's Legacy</title></book>";
    doc.Load(new StringReader(xmlString));

    // Create an XML declaration. 
    XmlDeclaration xmldecl;
    xmldecl = doc.CreateXmlDeclaration("1.0",null,null);
    xmldecl.Encoding="UTF-16";
    xmldecl.Standalone="yes";     

    // Add the new node to the document.
    XmlElement root = doc.DocumentElement;
    doc.InsertBefore(xmldecl, root);

    // Display the modified XML document 
    Console.WriteLine(doc.OuterXml);

  }

}

#4

As everybody else mentioned, it's Unicode issue.

正如大家提到的，这是Unicode问题。

I advise you to try LINQ To XML. Although not really related, I mention it as it's super easy compared to old ways and, more importantly, I assume it might have automatic resolutions to issues like these without extra coding from you.

我建议您尝试使用LINQ到XML。虽然不是很相关，但我提到它是因为它比旧的方法更容易，而且更重要的是，我认为它可能会自动解决类似问题，而不需要您进行额外的编码。

#1