Path.GetFullPath Method (String)


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Returns the absolute path for the specified path string.

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

public static string GetFullPath(
	string path


Type: System.String

The file or directory for which to obtain absolute path information.

Return Value

Type: System.String

The fully qualified location of path, such as "C:\MyFile.txt".

Exception Condition

path is a zero-length string, contains only white space, or contains one or more of the invalid characters defined in GetInvalidPathChars.


The system could not retrieve the absolute path.


The caller does not have the required permissions.


path is null.


path contains a colon (":") that is not part of a volume identifier (for example, "c:\").


The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.

The .NET Framework does not support direct access to physical disks through paths that are device names, such as "\\.\PHYSICALDRIVE0 ".

The absolute path includes all information required to locate a file or directory on a system.

The file or directory specified by path is not required to exist. For example, if c:\temp\newdir is the current directory, calling GetFullPath on a file name such as test.txt returns c:\temp\newdir\test.txt. The file need not exist.

However, if path does exist, the caller must have permission to obtain path information for path. Note that unlike most members of the Path class, this method accesses the file system.

This method uses current directory and current volume information to fully qualify path. If you specify a file name only in path, GetFullPath returns the fully qualified path of the current directory.

If you pass in a short file name, it is expanded to a long file name.

If a path contains no significant characters it is invalid unless it contains one or more "." characters followed by any number of spaces, then it will be parsed as either "." or "..".

For a list of common I/O tasks, see Common I-O Tasks.

The following code example demonstrates the GetFullPath method on a Windows-based desktop platform.

string fileName = "myfile.ext";
string path1 = @"mydir";
string path2 = @"\mydir";
string fullPath;

fullPath = Path.GetFullPath(path1);
Console.WriteLine("GetFullPath('{0}') returns '{1}'", 
    path1, fullPath);

fullPath = Path.GetFullPath(fileName);
Console.WriteLine("GetFullPath('{0}') returns '{1}'", 
    fileName, fullPath);

fullPath = Path.GetFullPath(path2);
Console.WriteLine("GetFullPath('{0}') returns '{1}'", 
    path2, fullPath);

// Output is based on your current directory, except
// in the last case, where it is based on the root drive
// GetFullPath('mydir') returns 'C:\temp\Demo\mydir'
// GetFullPath('myfile.ext') returns 'C:\temp\Demo\myfile.ext'
// GetFullPath('\mydir') returns 'C:\mydir'


for access to the path.

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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