Path.Combine () behavior with drive letters

Question

According to the official documentation regarding the method Path.Combine: https://msdn.microsoft.com/en-us/library/fyy7a5kt(v=vs.110).aspx

Notes

If path1 is not a disk reference (that is, "C:" or "D:") and does not end with a valid delimiter character, as defined in DirectorySeparatorChar, AltDirectorySeparatorChar or VolumeSeparatorChar, then DirectorySeparatorChar is added to path 1 before concatenation.

This means that it will not be added after the drive letter \, therefore this piece of code:

var path1 = @"c:";
var path2 = @"file.txt";
Path.Combine(path1, path2);

will create C:file.txtthat does not point to the file file.txtlocated at c:.

What is the reason for this?

Answer 1

Path.Combine , c:file.txt .

Microsoft NTFS:

, , . , , " " .

c:file.txt C:, c:\file.txt ( ).

Path.Combine , , .

Answer 2

c: c:\ .

• c: - , .

• c:\ - , c: + \