C# - Check if a given url is file or directory?

Question

I have a method which will input either a http , ftp or a local path. With the input url, i need to decide whether it is a file or directory.

Path.GetExtension(url) works almost fine. But if a directory begins with/have '.' in its name, then this checking will fail.

Is there any other methods to check and list url if directory ?

evanmcdonnal · Accepted Answer · 2012-10-29 06:46:14Z

10

You could use File.Exists(url) and Directory.Exists(url)

Another approach would be to create an array of extensions then check the result Path.GetExtension(url) against it.

answered Oct 29, 2012 at 6:46

evanmcdonnal

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1 Comment

csLijo Over a year ago

File.Exists(url) is not going to work, as it will return false for http/ftp cases. As an alternative, i can consider your second approach.. Thanks evanmcdonnal

Jeffrey Van Laethem · Accepted Answer · 2018-11-12 15:26:56Z

4

The following code takes the path, looks at the last substring (after the last /) and checks if there is a '.' in that substring to determine if it is a file or a path. isFile will be a boolean, true meaning that it is a file.

var isFile = new Uri(url).AbsolutePath.Split('/').Last().Contains('.');

edited Nov 12, 2018 at 15:26

Jeffrey Van Laethem

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answered Nov 12, 2018 at 13:15

Alex from Jitbit

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2 Comments

Kurt Van den Branden Over a year ago

While this code snippet may be the solution, including an explanation really helps to improve the quality of your post. Remember that you are answering the question for readers in the future, and those people might not know the reasons for your code suggestion.

Alex from Jitbit Over a year ago

@KurtVandenBranden sometimes the code is self-explanatory (for those who can read it). Not every piece of code deserves this, otherwise you're just being formal, not helpful.

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