的XmlWriter写入一个字符串，而不是到一个文件 [英] XmlWriter to Write to a String Instead of to a File

问题描述

我有需要返回XML字符串的WCF服务。但它似乎像笔者只希望建立一个文件，而不是一个字符串。我想：

I have a WCF service that needs to return a string of XML. But it seems like the writer only wants to build up a file, not a string. I tried:

string nextXMLstring = "";
using (XmlWriter writer = XmlWriter.Create(nextXMLstring))

这会产生一个错误，说nextXMLstring不必须的文件路径。它希望是这样的：

This generates an error saying nextXMLstring doesnt have a file path. It wants something like:

using (XmlWriter writer = XmlWriter.Create("nextXMLstring.xml"))

我怎样才能建立我的XML，然后返回一个字符串??

How can I build up my XML and then return it as a string??

谢谢！

推荐答案

您需要创建一个StringWriter的，并传递到XmlWriter的。

You need to create a StringWriter, and pass that to the XmlWriter.

在XmlWriter.Create的字符串超载是一个文件名。

The string overload of the XmlWriter.Create is for a filename.

例如

using (var sw = new StringWriter()) {
  using (var xw = XmlWriter.Create(sw)) {
    // Build Xml with xw.


  }
  return sw.ToString();
}

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