有没有一种方法可以使用静态方法在.NET中获取文件的大小? [英] Is there a way to get the size of a file in .NET using a static method?

问题描述

我知道获取文件大小的正常方法是使用FileInfo实例:

I know the normal way of getting the size of a file would be to use a FileInfo instance:

using System.IO;
class SizeGetter
{
  public static long GetFileSize(string filename)
  {
    FileInfo fi = new FileInfo(filename);
    return fi.Length;
  }
}

是否有一种方法可以执行相同的操作而不必使用静态方法创建FileInfo实例?

Is there a way to do the same thing without having to create an instance of FileInfo, using a static method?

也许每次我想要一个文件大小时，我都试图过分地创建新实例，但是例如，尝试计算包含5000多个文件的目录的总大小.如GC所优化的那样，难道不应该有一种无需不必要地征税就可以做到这一点的方法吗?

Maybe I'm trying to be overly stingy with creating a new instance every time I want a file size, but take for example trying to calculate the total size of a directory containing 5000+ files. As optimized as the GC may be, shouldn't there be a way to do this without having to tax it unnecessarily?

推荐答案

不用担心.首先，.NET中的分配很便宜.其次，该对象将出现在gen 0中，因此应该在没有太多开销的情况下进行收集.

Don't worry about it. First, allocation in .NET is cheap. Second, that object will be in gen 0 so it should be collected without much overhead.

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