The VBUC upgrades the DAO data access technology to ADO.NET ONLY by means of the System.Data.Common namespace. If the original VB6 code contains DAO code the VBUC will upgrade the data access code following the next transformation table:
Class | Maps to |
DAO.Recordset | Artinsoft.VB6.DB.DAO.DAORecordSetHelper |
DAO.Field | System.Data.DataColumn |
DAO.Fields | System.Data.DataColumnCollection |
DAO.Database | System.Data.Common.DBConnection |
DAO.ParameterDirectionEnum | System.Data.ParameterDirection |
DAO.Parameters | System.Data.Common.DbParameterCollection |
DAO.Parameter |
System.Data.Common.DbParameter Example: System.Data.Common.DbParameter p = factory. CreateParameter(); |
DAO.QueryDef | System.Data.Common.DbCommand |
DAO.Connection | System.Data.Common.DbConnection |
DAO.Workspace | Artinsoft.VB6.DB.DAO.WorkspaceHelper |
DAO.DBEngine | Artinsoft.VB6.DB.DAO.DBEngineHelper |
DAO.RecordsetTypeEnum | Artinsoft.VB6.DB.DAO.DAORecordsetTypeEnum |
DAO.LockTypeEnum | Artinsoft.VB6.DB.DAO.DAOLockTypeEnum |
DAO.RecordsetOptionEnum | Artinsoft.VB6.DB.DAO.DAORecordsetOptionEnum |
A brief source sample of this feature:
Public recRecordset As DAO.Recordset Public dB As DAO.Database Private Sub Form_Load() Set dB = DBEngine.OpenDatabase(App.Path & "\TestDB.mdb") Set recRecordset = dB.OpenRecordset("Select * from Countries", DAO.dbOpenDynaset, DAO.dbConsistent, DAO.LockTypeEnum.dbOptimistic) recRecordset.Sort = "Name" recRecordset.MoveFirst End Sub
Public recRecordset As DAORecordSetHelper Public dB As DbConnection Private Sub Form1_Load(ByVal eventSender As Object, ByVal eventArgs As EventArgs) Handles MyBase.Load 'UPGRADE_WARNING: (2065) DAO.DBEngine method DBEngine.OpenDatabase has a new behavior. More Information: http://www.vbtonet.com/ewis/ewi2065.aspx dB = DBEngineHelper.Instance(Artinsoft.VB6.DB.AdoFactoryManager.GetFactory()).OpenDatabase(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\TestDB.mdb) recRecordset = DAORecordSetHelper.Open("Select * from Countries", dB, "") 'UPGRADE_ISSUE: (2064) DAO.Recordset property recRecordset.Sort was not upgraded. More Information: http://www.vbtonet.com/ewis/ewi2064.aspx UpgradeStubs.DAO_Recordset.setSort(recRecordset, "Name") recRecordset.MoveFirst() End Sub
Note that the connection String (gray highlight) was manually added after the automated migration stage.
public DAORecordSetHelper recRecordset = null; public DbConnection dB = null; private void Form1_Load( Object eventSender, EventArgs eventArgs) { //UPGRADE_WARNING: (2065) DAO.DBEngine method DBEngine.OpenDatabase has a new behavior. More Information: http://www.vbtonet.com/ewis/ewi2065.aspx dB = DBEngineHelper.Instance(Artinsoft.VB6.DB.AdoFactoryManager.GetFactory()).OpenDatabase(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\TestDB.mdb"); recRecordset = DAORecordSetHelper.Open("Select * from Countries", dB, ""); //UPGRADE_ISSUE: (2064) DAO.Recordset property recRecordset.Sort was not upgraded. More Information: http://www.vbtonet.com/ewis/ewi2064.aspx UpgradeStubs.DAO_Recordset.setSort(recRecordset, "Name"); recRecordset.MoveFirst(); }
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