O'Reilly logo

C# Cookbook by Jay Hilyard, Stephen Teilhet

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

11.15. Parsing a Path

Problem

You need to separate the constituent parts of a path and place them into separate variables.

Solution

Use the static methods of the Path class:

public static void ParsePath(string path)
{
    string root = Path.GetPathRoot(path);
    string dirName = Path.GetDirectoryName(path);
    string fullFileName = Path.GetFileName(path);
    string fileExt = Path.GetExtension(path);
    string fileNameWithoutExt = Path.GetFileNameWithoutExtension(path);
    StringBuilder format = new StringBuilder( );
    format.Append("ParsePath of {0} breaks up into the following" +
           "pieces:\r\n\tRoot: {1}\r\n\t");
    format.Append("Directory Name: {2}\r\n\tFull File Name: {3}\r\n\t");
    format.Append("File Extension: {4}\r\n\tFile Name Without Extension: {5}\r\n");
    Console.WriteLine(format.ToString( ),path,root,dirName,
           fullFileName,fileExt,fileNameWithoutExt);
}

If the string @"c:\test\tempfile.txt" is passed to this method, the output would look like this:

ParsePath of C:\test\tempfile.txt breaks up into the following pieces:
        Root: C:\
        Directory Name: C:\test
        Full File Name: tempfile.txt
        File Extension: .txt
        File Name Without Extension: tempfile

Discussion

The Path class contains methods that can be used to parse a given path. Using these classes is much easier and less error-prone than writing path- and filename-parsing code. There are five main methods used to parse a path: GetPathRoot, GetDirectoryName, GetFileName, GetExtension, and GetFileNameWithoutExtension. Each has a single parameter, path, which represents ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required