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How to: Determine a File's Last Modified Time in Visual Basic

The My.Computer.FileSystem.GetFileInfo Method can be used to get a FileInfo object, which contains information about the specified file.

You can use the LastWriteTime or the LastWriteTimeUtc property to get or set the last time the file was modified. LastWriteTimeUtc displays the time in Coordinated Universal Time (UTC). For more information, see Date and Time Format Strings.

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To determine a file's last modified time

  • Use the GetFileInfo method to return a FileInfo object for the file, which can be queried for information. This example gets a FileInfo object for Testfile.txt and uses the LastWriteTime property to display the last access time.

    Dim infoReader As System.IO.FileInfo
    infoReader = My.Computer.FileSystem.GetFileInfo("C:\testfile.txt")
    MsgBox("File was last modified on " & infoReader.LastWriteTime)
    
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