Using list functions to migrate from personal geodatabases to file geodatabases
GeodatabaseConversion\ToFileGDB.vb
' Copyright 2010 ESRI
' 
' All rights reserved under the copyright laws of the United States
' and applicable international laws, treaties, and conventions.
' 
' You may freely redistribute and use this sample code, with or
' without modification, provided you include the original copyright
' notice and use restrictions.
' 
' See the use restrictions.
' 

Imports Microsoft.VisualBasic
Imports System
Imports System.Text
Imports ESRI.ArcGIS.ConversionTools
Imports ESRI.ArcGIS.DataManagementTools
Imports ESRI.ArcGIS.Geoprocessor
Imports ESRI.ArcGIS.Geoprocessing
Imports ESRI.ArcGIS.esriSystem

Namespace GeodatabaseConversion
  Friend Class ToFileGDB
    Shared Sub Main(ByVal args As String())

            ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.Desktop)

            ' Initialize the Geoprocessor
            Dim geoprocessor As ESRI.ArcGIS.Geoprocessor.Geoprocessor = New ESRI.ArcGIS.Geoprocessor.Geoprocessor()

      ' Allow for the overwriting of file geodatabases, if they previously exist.
      geoprocessor.OverwriteOutput = True

      ' Set the workspace to a folder containing personal geodatabases.
      geoprocessor.SetEnvironmentValue("workspace", "C:\GP")

      ' Identify personal geodatabases.
      Dim workspaces As IGpEnumList = geoprocessor.ListWorkspaces("*", "Access")
      Dim workspace As String = workspaces.Next()
      Do While workspace <> ""
        ' Set workspace to current personal geodatabase
        geoprocessor.SetEnvironmentValue("workspace", workspace)

        ' Create a file geodatabase with the same name as the personal geodatabase
        Dim gdbname As String = System.IO.Path.GetFileName(workspace).Replace(".mdb", "")
        Dim dirname As String = System.IO.Path.GetDirectoryName(workspace)

        ' Execute CreateFileGDB tool
        Dim createFileGDBTool As CreateFileGDB = New CreateFileGDB(dirname, gdbname & ".gdb")
        geoprocessor.Execute(createFileGDBTool, Nothing)

                ' Initialize the Copy Tool
        Dim copyTool As Copy = New Copy()

        ' Identify feature classes and copy to file geodatabase
        Dim fcs As IGpEnumList = geoprocessor.ListFeatureClasses("", "", "")
        Dim fc As String = fcs.Next()
        Do While fc <> ""
          Console.WriteLine("Copying " & fc & " to " & gdbname & ".gdb")
          copyTool.in_data = fc
          copyTool.out_data = dirname & "\" & gdbname & ".gdb" & "\" & fc
          geoprocessor.Execute(copyTool, Nothing)
          fc = fcs.Next()
        Loop

                ' Identify feature datasets and copy to file geodatabase
        Dim fds As IGpEnumList = geoprocessor.ListDatasets("", "")
        Dim fd As String = fds.Next()
        Do While fd <> ""
          Console.WriteLine("Copying " & fd & " to " & gdbname & ".gdb")
          copyTool.in_data = fd
          copyTool.out_data = dirname & "\" & gdbname & ".gdb" & "\" & fd
          geoprocessor.Execute(copyTool, Nothing)
          fd = fds.Next()
        Loop

        ' Identify tables and copy to file geodatabase
        Dim tbls As IGpEnumList = geoprocessor.ListTables("", "")
        Dim tbl As String = tbls.Next()
        Do While tbl <> ""
          Console.WriteLine("Copying " & tbl & " to " & gdbname & ".gdb")
          copyTool.in_data = tbl
          copyTool.out_data = dirname & "\" & gdbname & ".gdb" & "\" & tbl
          geoprocessor.Execute(copyTool, Nothing)
          tbl = tbls.Next()
        Loop

        workspace = workspaces.Next()
      Loop

    End Sub
  End Class
End Namespace