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
。用户可以选择一个文件或一个目录,然后用它来做某事。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;
}
我不禁觉得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:
if (attr.HasFlag(FileAttributes.Directory))
MessageBox.Show("Its a directory");
else
MessageBox.Show("Its a file");
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