CODEWITHSUNDEEP
c#filepath
Geo
Geo

Reputation: 96947

How do I join two paths in C#?

How do I join two file paths in C#?

Upvotes: 117

Views: 57076

Answers (3)

user16557645
user16557645

Reputation:

Path.Join Method

Join(String, String)

code from https://learn.microsoft.com/en-us/dotnet/api/system.io.path.join?view=net-5.0#System_IO_Path_Join_System_String_System_String_

class Program
{
    static void Main()
    {
        ShowPathInformation("C:/", "users/user1/documents", "letters");
        ShowPathInformation("D:/", "/users/user1/documents", "letters");
        ShowPathInformation("D:/", "users/user1/documents", "C:/users/user1/documents/data");
    }

   private static void ShowPathInformation(string path1, string path2, string path3)
    {
        Console.WriteLine($"Concatenating  '{path1}', '{path2}', and '{path3}'");
        Console.WriteLine($"   Path.Join:     '{Path.Join(path1, path2, path3)}'");
        Console.WriteLine($"   Path.Combine:  '{Path.Combine(path1, path2, path3)}'");
        Console.WriteLine($"   {Path.GetFullPath(Path.Join(path1, path2, path3))}");
    }
}
// The example displays the following output if run on a Windows system:
// Concatenating  'C:/', 'users/user1/documents', and 'letters'
//    Path.Join:     'C:/users/user1/documents\letters'
//    Path.Combine:  'C:/users/user1/documents\letters'
//    C:\users\user1\documents\letters
// Concatenating  'D:/', '/users/user1/documents', and 'letters'
//    Path.Join:     'D://users/user1/documents\letters'
//    Path.Combine:  '/users/user1/documents\letters'
//    D:\users\user1\documents\letters
// Concatenating  'D:/', 'users/user1/documents', and 'C:/users/user1/documents/data'
//    Path.Join:     'D:/users/user1/documents\C:/users/user1/documents/data'
//    Path.Combine:  'C:/users/user1/documents/data'
//    D:\users\user1\documents\C:\users\user1\documents\data

Unlike the Combine method, the Join method does not attempt to root the returned path. (That is, if path2 or path2 is an absolute path, the Join method does not discard the previous paths as the Combine method does.

Not all invalid characters for directory and file names are interpreted as unacceptable by the Join method, because you can use these characters for search wildcard characters. For example, while Path.Join("c:\", "temp", "*.txt") might be invalid when creating a file, it is valid as a search string. The Join method therefore successfully interprets it.

Upvotes: 7

Cameron MacFarland
Cameron MacFarland

Reputation: 71936

System.IO.Path.Combine() is what you need.

Path.Combine(path1, path2);

Upvotes: 38

Jose Basilio
Jose Basilio

Reputation: 51538

You have to use Path.Combine() as in the example below:

string basePath = @"c:\temp";
string filePath = "test.txt";
string combinedPath = Path.Combine(basePath, filePath); 
// produces c:\temp\test.txt

Upvotes: 179

Related Questions