In VB6, how to access FileSystem.GetFileInfo()?

Question

Throwback on an old project and needing to use VB6. I'm having an issue in referencing the appropriate DLL that contains System.IO in the old VB6 IDE.

I have tried to reference: C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll - error: Can't add reference to specified file

Added a reference to C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorlib.tlb - doesn't work.

Added reference to C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.tlb - there is no System.IO from the intellisense.

Can someone please post the step-by-step instructions?

Answer 1

Got this somewhat working with:

Declare Function GetDiskFreeSpace Lib "kernel32" Alias "GetDiskFreeSpaceA" (ByVal lpRootPathName As String, lpSectorsPerCluster As Long, lpBytesPerSector As Long, lpNumberOfFreeClusters As Long, lpTtoalNumberOfClusters As Long) As Long

Dim info As DiskInformation
Dim lAnswer As Long
Dim lpRootPathName As String
Dim lpSectorsPerCluster As Long
Dim lpBytesPerSector As Long
Dim lpNumberOfFreeClusters As Long
Dim lpTotalNumberOfClusters As Long
Dim lBytesPerCluster As Long
Dim lNumFreeBytes As Double
Dim dPercentFreeClusters As Double
Dim sString As String

lpRootPathName = "c:\"
lAnswer = GetDiskFreeSpace(lpRootPathName, lpSectorsPerCluster, lpBytesPerSector, lpNumberOfFreeClusters, lpTotalNumberOfClusters)
lBytesPerCluster = lpSectorsPerCluster * lpBytesPerSector

' Throws overflow exception - I guess there were no Terabyte drives when VB6 came around
' lNumFreeBytes = lBytesPerCluster * lpNumberOfFreeClusters

'sString = "Number of Free Bytes : " & lNumFreeBytes & vbCr & vbLf
'sString = sString & "Number of Free Kilobytes: " & (lNumFreeBytes / 1024) & "K" & vbCr & vbLf
'sString = sString & "Number of Free Megabytes: " & Format(((lNumFreeBytes / 1024) / 1024), "0.00") & "MB"

dPercentFreeClusters = Round(lpNumberOfFreeClusters / lpTotalNumberOfClusters * 100, 2)

There is, however, an Overflow exception being thrown when trying to calculate the number of free bytes.

I would like to get this working with My.Computer.FileSystem. Suggestions?