更好地检查路径是文件还是目录？ [英] Better way to check if a Path is a File or a Directory?

问题描述

我正在处理目录和文件的 TreeView 。用户可以选择文件或目录，然后使用它。这需要我有一种基于用户选择执行不同操作的方法。

I am processing a TreeView of directories and files. A user can select either a file or a directory and then do something with it. This requires me to have a method which performs different actions based on the user's selection.

目前我正在做这样的事情来确定路径是文件还是文件一个目录：

At the moment I am doing something like this to determine whether the path is a file or a directory:

bool bIsFile = false;
bool bIsDirectory = false;

try
{
    string[] subfolders = Directory.GetDirectories(strFilePath);

    bIsDirectory = true;
    bIsFile = false;
}
catch(System.IO.IOException)
{
    bIsFolder = false;
    bIsFile = true;
}

我不禁感到有更好的方法来做到这一点！我希望找到一个标准的.NET方法来处理这个问题，但是我还没有这样做。是否存在这种方法，如果不存在，确定路径是文件还是目录最直接的方法是什么？

I cannot help to feel that there is a better way to do this! I was hoping to find a standard .NET method to handle this, but I haven't been able to do so. Does such a method exist, and if not, what is the most straightforward means to determine whether a path is a file or directory?

推荐答案

p>从如何判断路径是否文件或目录：

// get the file attributes for file or directory
FileAttributes attr = File.GetAttributes(@"c:\Temp");

//detect whether its a directory or file
if ((attr & FileAttributes.Directory) == FileAttributes.Directory)
    MessageBox.Show("Its a directory");
else
    MessageBox.Show("Its a file");

.NET 4.0 +更新

根据以下意见，如果您使用的是.NET 4.0或更高版本（最高性能并不重要），则可以使用更清晰的方式编写代码：

Update for .NET 4.0+

Per the comments below, if you are on .NET 4.0 or later (and maximum performance is not critical) you can write the code in a cleaner way:

// get the file attributes for file or directory
FileAttributes attr = File.GetAttributes(@"c:\Temp");

if (attr.HasFlag(FileAttributes.Directory))
    MessageBox.Show("Its a directory");
else
    MessageBox.Show("Its a file");

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