Directory.GetFiles Method |
System.IO.Directory
Directory.GetFiles( path [, searchpattern ])
A valid path to a directory
A file specification, including the wildcard characters * and ?
An array of strings, each element of which contains the name of a file
Returns the names of the files in a specified directory
path can be either an absolute path (a complete path from the root directory to the directory whose filenames are to be retrieved) or a relative path (starting from the current directory to the directory whose filenames are to be retrieved).
path can be either a path on the local system, the path of a mapped network drive, or a UNC path.
path cannot contain wildcard characters.
If searchpattern is specified, the method returns only those files whose names match the string, which can contain wildcard characters. Otherwise, the function returns the names of all the files in the path directory.
If the directory specified by path has no files, or if no files match searchpattern , an empty array is returned.
The following code displays all files in c:\ that have the extension .txt:
Dim sFiles( ) As String Dim i As Integer sFiles = Directory.GetFiles("c:\", "*.txt") For i = 0 To UBound(sFiles) Console.WriteLine(sFiles(i)) Next
Since GetFiles can return an empty array, you can prevent an array-access error in either of two ways: you can iterate the returned array using the For Each... Next construct, or you can retrieve the value of the UBound function, which is -1 in the case of an uninitialized array.
Directory.GetDirectories Method, Directory.GetFileSystemEntries Method