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Tip of the Day
Language: VBNET
Expertise: Intermediate
Jan 19, 2002

Filter file names on their names or attributes

The GetFiles and GetDirectories methods of the System.IO.Directory class can take an argument containing wildcards, to filter the result:

' Display all the *.txt files in C:\DOCS.
Dim fname As String
For Each fname In Directory.GetFiles("c:\docs", "*.txt")
    Console.WriteLine(fname)
Next
You can use the GetCreationTime, GetLastAccessTime, GetLastWriteTime and GetAttributes shared methods to display information about a file or a directory, or to filter files according to their attributes:

For Each fname In Directory.GetFiles("c:\docs", "*.txt")
    ' Display only read-only files.
    ' (You need CBool if Option Strict is on.)
    If CBool(File.GetAttributes(fname) And FileAttributes.ReadOnly) Then
        Console.WriteLine(fname)
    End If
Next
Francesco Balena
 
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