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S e a r c h F o r a F i l e U s i n g a W i l d C a r d By Michael McIntyre
Most experienced Windows users know how to use the standard wild card characters ( ? and * ) to search for file(s) on their computer. For example *.TXT would be used to find all the files with a file extension of TXT.
A .NET application can programmatically scan a directory for files using the standard wild cards too. Here is an example:
' Declare a variable of type FileInfo named aFileInfo. Dim aFileInfo As System.IO.FileInfo ' Declare a variable of type FileInfo Array named FileInfos. Dim fileInfos() As System.IO.FileInfo
' Declare a variable of type DirectoryInfo named aDirectoryInfo. Dim aDirectoryInfo As System.IO.DirectoryInfo ' Use the New constructor to create a DirectoryInfo object ' passing in the path to the C drive. ' Assign the result to the aDirectoryInfo variable. aDirectoryInfo = New System.IO.DirectoryInfo("C:\")
' Call GetFiles function of the DirectoryInfo object ' passing in some standard wild card characters. ' Assign the result to the fileInfos array variable. fileInfos = aDirectoryInfo.GetFiles("*.TXT")
' Display the names of the files found. For Each aFileInfo In fileInfos Console.WriteLine(aFileInfo.Name) Next
RESULT:
BOOTLOG.TXT DemoAttributes.txt
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