{"id":1200,"date":"2023-03-28T11:37:11","date_gmt":"2023-03-28T04:37:11","guid":{"rendered":"https:\/\/csharptutorial.net\/?page_id=1200"},"modified":"2023-03-29T07:13:16","modified_gmt":"2023-03-29T00:13:16","slug":"csharp-path","status":"publish","type":"page","link":"https:\/\/www.csharptutorial.net\/csharp-file\/csharp-path\/","title":{"rendered":"C# Path"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the C# Path<\/code> class to interact with the file and directory paths.<\/p>\n\n\n\n

Introduction to the C# Path class<\/h2>\n\n\n\n

The Path<\/code> class is a part of the System.IO<\/code> namespace in .NET. The Path<\/code> class provides you with a set of useful static methods for working with the file and directory Path<\/code>.<\/p>\n\n\n\n

Getting the file name<\/h3>\n\n\n\n

To get the file name from a path, you use the GetFileName()<\/code> method:<\/p>\n\n\n

using<\/span> static<\/span> System.Console;\n\nstring<\/span> path = @\"C:\\temp\\readme.txt\"<\/span>;\nstring<\/span> fileName = Path.GetFileName(path);\n\nWriteLine(fileName);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
readme.txt<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Getting the directory name<\/h3>\n\n\n\n
To get the directory name of the path, you use the GetDirectoryName()<\/code> method :<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> path = @\"C:\\temp\\readme.txt\"<\/span>;\nstring<\/span> dirname = Path.GetDirectoryName(path);\n\nWriteLine(dirname);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
C:\\temp<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Getting the absolute path<\/h3>\n\n\n\n
To get the absolute path of a specified path, you use the GetFullPath()<\/code> method:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> relativePath = @\"..\\..\\readme.txt\"<\/span>;\nstring<\/span> fullPath = Path.GetFullPath(relativePath);\n\nWriteLine(fullPath);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
C:\\project\\bin\\readme.txt<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Combining paths<\/h3>\n\n\n\n
To combines two or more strings into a path, you use the Combine()<\/code> method:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> directory = @\"C:\\temp\"<\/span>;\nstring<\/span> fileName = \"readme.txt\"<\/span>;\nstring<\/span> fullPath = Path.Combine(directory, fileName);\n\nWriteLine(fullPath);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
C:\\temp\\readme.txt<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Getting file extension<\/h3>\n\n\n\n
To get the file extension of a path, you use the GetExtension()<\/code> method:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> path = @\"C:\\temp\\readme.txt\"<\/span>;\nstring<\/span> extension = Path.GetExtension(path);\n\nWriteLine(extension);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
.txt<\/span><\/code><\/span>Code language:<\/span> CSS<\/span> (<\/span>css<\/span>)<\/span><\/small><\/pre>\n\n\n
Creating a unique temporary file name<\/h3>\n\n\n\n
To create a temporary file with a .tmp<\/em> file extension and returns the path to it, you use the GetTempFileName()<\/code> method. For example:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> tempFileName = Path.GetTempFileName();\n\nWriteLine(tempFileName);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
The method creates a unique temporary file in the current user’s temporary directory. For example, on Windows, it outputs the following:<\/p>\n\n\n
C:\\Users\\username\\AppData\\Local\\Temp\\tmpC430.tmp<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
The username<\/code> is your current Windows user.<\/p>\n\n\n\n
Getting a temporary directory path of the current user<\/h3>\n\n\n\n
To get the temporary path of the current user, you use the GetTempPath()<\/code> method. For example:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> tempDir = Path.GetTempPath();\nWriteLine(tempDir);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Example output on Windows:<\/p>\n\n\n
C:\\Users\\username\\AppData\\Local\\Temp\\<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Changing the extension of the path<\/h3>\n\n\n\n
The ChangeExtension()<\/code> method changes the file extension of a path. The following program uses the ChangExtension()<\/code> method to change the .txt<\/code> to .csv<\/code>:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> path = @\"C:\\temp\\readme.txt\"<\/span>;\nstring<\/span> newExtension = \".csv\"<\/span>;\nstring<\/span> newPath = Path.ChangeExtension(path, newExtension);\n\nWriteLine(newPath);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Checking if a path contains a file extension<\/h3>\n\n\n\n
The HasExtension<\/code> method returns true<\/code> if a path contains a file extension or false<\/code> otherwise:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nstring<\/span> path = @\"C:\\temp\\readme.txt\"<\/span>;\nbool<\/span> hasExtension = Path.HasExtension(path);\n\nWriteLine(hasExtension);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
True<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Summary<\/h2>\n\n\n\n
Method<\/th>Result<\/th><\/tr><\/thead>
Path.GetFileName(\"C:\\temp\\readme.txt\")<\/code><\/td>readme.txt<\/code><\/td><\/tr>
Path.GetDirectoryName(\"C:\\temp\\readme.txt\")<\/code><\/td>C:\\temp<\/code><\/td><\/tr>
Path.GetFullPath(\"..\\..\\readme.txt\")<\/code><\/td>C:\\project\\bin\\readme.txt<\/code><\/td><\/tr>
Path.Combine(@\"C:\\temp\", \"readme.txt\")<\/code><\/td>C:\\temp\\readme.txt<\/code>\\<\/td><\/tr>
Path.GetExtension(@\"C:\\temp\\readme.txt\")<\/code><\/td>.txt<\/code><\/td><\/tr>
Path.GetTempFileName()<\/code><\/td>C:\\Users\\username\\AppData\\Local\\Temp\\tmpC430.tmp<\/code><\/td><\/tr>
Path.GetTempPath()<\/code><\/td>C:\\Users\\username\\AppData\\Local\\Temp\\<\/code><\/td><\/tr>
Path.ChangeExtension(@\"C:\\temp\\readme.txt\", \".csv\")<\/code><\/td>C:\\temp\\readme.csv<\/code><\/td><\/tr>
Path.HasExtension(@\"C:\\temp\\readme.txt\"<\/code>)<\/td>True<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n
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