The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Path.Combine Method (String, String)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Combines two path strings.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public static string Combine(
	string path1,
	string path2


Type: System.String
The first path.
Type: System.String
The second path.

Return Value

Type: System.String
A string containing the combined paths. If one of the specified paths is a zero-length string, this method returns the other path. If path2 contains an absolute path, this method returns path2.


path1 or path2 contain one or more of the invalid characters defined in GetInvalidPathChars.


path1 or path2 is null.

If path1 does not end with a valid separator character as defined in DirectorySeparatorChar or AltDirectorySeparatorChar, a DirectorySeparatorChar is appended to path1 before concatenation.

If path2 does not include a root (for example, if path2 does not start with a separator character or a drive specification), the result is a concatenation of the two paths, with an intervening separator character. If path2 includes a root, path2 is returned.

The following example combines directory and subdirectory names into paths for creating the directories in isolated storage. This example is part of a larger example provided for the IsolatedStorageFile class.

// Create three subdirectories under MyApp1.
string subdirectory1 = Path.Combine("MyApp1", "SubDir1");
string subdirectory2 = Path.Combine("MyApp1", "SubDir2");
string subdirectory3 = Path.Combine("MyApp1", "SubDir3");

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone