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How to: Determine a Drive's Physical Free Space in Visual Basic

The My.Computer.FileSystem.GetDriveInfo Method provides a DriveInfo object that can be queried for information about a drive on a computer. You can use the TotalFreeSpace property to determine the amount of space on a drive. Attempting to access the property without sufficient permission throws a SecurityException exception.


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To determine the amount of free space on a drive

  • Use the TotalFreeSpace property to determine the amount of free space, as illustrated in the following code:

    Dim cdrive As System.IO.DriveInfo
    cdrive = My.Computer.FileSystem.GetDriveInfo("C:\")
    MsgBox("Total free space: " & CStr(cdrive.TotalFreeSpace))

    This code example is also available as an IntelliSense code snippet. In the code snippet picker, it is located in File system - Processing Drives, Folders, and Files. For more information, see How to: Insert Snippets Into Your Code (Visual Basic).