C＃CA2000：使用的FileStream / XmlTextReader的失去范围之前释放对象 [英] C# CA2000:Dispose objects before losing scope using FileStream/XmlTextReader

问题描述

我有很多这样的代码：

FileStream fs = File.Open(@"C:\Temp\SNB-RSS.xml", FileMode.Open); 
using (XmlTextReader reader = new XmlTextReader(fs)) 
{ 
   /* Some other code */
}

这给了我下面的代码分析警告：

This gives me the following Code Analysis warning:

CA2000 : Microsoft.Reliability : In method 'SF_Tester.Run()', object 'fs' is not disposed along all exception paths. Call System.IDisposable.Dispose on object 'fs' before all references to it are out of scope.

如果我按照建议，我把File.Open在using语句，我得到这个：

If I follow the suggestion and I put the File.Open in a using statement, I get this:

CA2202 : Microsoft.Usage : Object 'fs' can be disposed more than once in method 'SF_Tester.Run()'. To avoid generating a System.ObjectDisposedException you should not call Dispose more than one time on an object.: Lines: 39

我使用VS2010，我不禁觉得我做错了什么，但我没有看到它。
我在做什么错了？

I'm using VS2010 and I can't help but think I'm doing something wrong but I don't see it. What am I doing wrong?

推荐答案

感叹，倾尽是不是。避免这一切都通过使用推荐的Create（）方法：

Sigh, exhausting isn't it. Avoid all this by using the recommended Create() method:

 using (var reader = XmlReader.Create(@"C:\Temp\SNB-RSS.xml")) {
     //...
 }

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