Introduction
This article will explain the Path class and its use. The System.IO namespace is one of the most significant namespaces used for working with file path in the .Net Framework. Let us see about the class. A path is a string that provides the location of a file or directory. A path does not necessarily point to a location on disk. The exact format of a path is determined by the current platform. A path can refer to a file or just a directory. The specified path can also refer to a relative path or a Universal Naming Convention (UNC) path for a server and share name.
Path Class
The Path class is a utility class used to manipulate path names. The Path class provides methods for manipulating a file system path. This class provides handful of static methods that make dealing with path a snap.
Some of the most useful methods of the Path class are:
| S.No |
Methods |
Description |
| 1 |
ChangeExtension |
This method Takes a path and returns a new path with the file name's extension changed. |
| 2 |
Combine |
This method is used to Combine two compatible path strings. |
| 3 |
GetDirectoryName |
Returns the name of the directory in the specified path. |
| 4 |
GetExtension |
Returns the name of the file extension in the specified path. |
| 5 |
GetFileName |
Returns the name of the file in the specified path. |
| 6 |
GetFileNameWithoutExtension |
This method is used to Return the file name without the extension in the specified path. |
| 7 |
GetFullPath |
Returns a full path to the specified path. This method can be used to resolve relative paths. |
| 8 |
GetPathRoot |
Returns the root directory name in the specified path. |
| 9 |
HasExtension |
Indicates whether a specified path's file name has an extension. |
| 10 |
IsPathRooted |
Indicates whether the specified path includes a root directory. |
ChangeExtension Method
This method Takes a path and returns a new path with the file name's extension changed.
|
Dim FileName__1 As String = "C:\mydir\myfile.com.extension"
Dim res As String
res =Path.ChangeExtension(FileName__1,".old")
Console.WriteLine("ChangeExtension: {0}", res)
|
Combine Method
This method is used to Combine two compatible path strings.
|
Dim paths As String() = {"d:\archives","2011", "media", "images"}
Dim fullPath As String = Path.Combine(paths)
Console.WriteLine(fullPath)
|
GetDirectoryName
This method is used to return the name of the directory in the specified path.
|
Dim filePath As String = "C:\MyDir\MySubDir\myfile1.ext"
Dim directoryNameAs String
While filePath IsNot Nothing
directoryName = Path.GetDirectoryName(filePath)
Console.WriteLine("GetDirectoryName: {0}", directoryName)
End While
|
GetExtension
Returns the name of the file extension in the specified path.
|
Dim fileName2 As String = "C:\mydir\myfile1.txt"
Dim extension As String
extension =Path.GetExtension(fileName)
Console.WriteLine("GetExtension: {0}", extension)
|
GetFileName
This method is used to return the name of the file in the specified path.
|
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result =Path.GetFileName(fileName)
Console.WriteLine("GetFileName: {0} ", result)
|
GetFileNameWithoutExtension
This method is used to return the file name without the extension in the specified path.
|
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result =Path.GetFileNameWithoutExtension(fileName)
Console.WriteLine("GetFileName: {0} ", result)
|
GetFullPath
This method is used to Return a full path to the specified path. This method can be used to resolve relative paths.
|
Dim path1 As String = "mydir"
Dim fullPath As String
fullPath =Path.GetFullPath(path1)
Console.WriteLine("GetFullPath: {0}", fullPath)
|
GetPathRoot
This method is used to return the root directory name in the specified path.
|
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result =Path.GetPathRoot(fileName)
Console.WriteLine("GetFileName: {0} ", result)
|
HasExtension
This method indicates whether a specified path's file name has an extension.
|
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As Boolean
result =Path.HasExtension(fileName)
Console.WriteLine("GetFileName: {0} ", result)
|
IsPathRooted
This method indicates whether the specified path includes a root directory.
|
Dim fileName As String = "mydir\myfile.txt"
Dim result As Boolean
result =Path.IsPathRooted(fileName)
Console.WriteLine("GetFileName: {0} ", result)
|
Example
Imports System.IO
Module Module1
Sub Main()
' ChangeExtension Method
Dim FileName__1 As String = "C:\mydir\myfile.com.extension"
Dim res As String
res = Path.ChangeExtension(FileName__1, ".old")
Console.WriteLine("ChangeExtension: {0}", res)
' Combined Method
Dim paths As String() = {"d:\archives", "2011", "media", "images"}
Dim fullPath As String = Path.Combine(paths)
Console.WriteLine(fullPath)
'GetDirectoryName
Dim filePath As String = "C:\MyDir\MySubDir\myfile1.ext"
Dim directoryName As String
While filePath IsNot Nothing
directoryName = Path.GetDirectoryName(filePath)
Console.WriteLine("GetDirectoryName: {0}", directoryName)
End While
'GetExtension
Dim fileName2 As String = "C:\mydir\myfile1.txt"
Dim extension As String
extension = Path.GetExtension(fileName)
Console.WriteLine("GetExtension: {0}", extension)
'GetFile Name
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result = Path.GetFileName(fileName)
Console.WriteLine("GetFileName: {0} ", result)
'GetFileNameWithoutExtension
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result = Path.GetFileNameWithoutExtension(fileName)
Console.WriteLine("GetFileName: {0} ", result)
'GetFullPath
Dim path1 As String = "mydir"
Dim fullPath As String
fullPath = Path.GetFullPath(path1)
Console.WriteLine("GetFullPath: {0}", fullPath)
'GetPathRoot
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As String
result = Path.GetPathRoot(fileName)
Console.WriteLine("GetFileName: {0} ", result)
'HasExtension
Dim fileName As String = "C:\mydir\myfile1.txt"
Dim result As Boolean
result = Path.HasExtension(fileName)
Console.WriteLine("GetFileName: {0} ", result)
'IsPathRooted
Dim fileName As String = "mydir\myfile.txt"
Dim result As Boolean
result = Path.IsPathRooted(fileName)
Console.WriteLine("GetFileName: {0} ", result)
End Sub
End Module
Conclusion:
The Path class is very useful for working with files and directories. If there is any mistake in this article then please notify me. I expect your valuable comments and feedback about this article.