PREFACE: I am using SQL Server 2008 R2 BackEnd and MS Access 2007 for the FrontEnd
I have a Class Module that returns any ADO Recordset I want from the SQL Server. I can then assign this to any form RecordSource property.
The problem is that when I try to edit the fields it says "This form is read-only" in the status bar. I want the form to be editable.
I have two forms
- FormEntities
- FormEntitiesEdit
The FormEntitiesEdit form does NOT use the Class Module. Rather all the code is in the form itself.
The purpose of the class module is avoid redundancy and just be able to use the Class Module to get a recordset from SQL Server easily.
FIRST HERE IS MY GLOBAL MODULE
'Default error message. 'eh' stands for error handler
Public eh As String
'Global variables for universal use
Public conn As ADODB.Connection
Public rs As ADODB.Recordset
Public com As ADODB.Command
SECOND IS THE CLASS MODULE (Name is cADO). THIS CLASS MODULE USES THE conn CONNECTION OBJECT ABOVE
Option Explicit
Private Const CONST_LockType = 3
Private Const CONST_CursorType = 1
Private Const CONST_CursorLocationServer = 3
Private Const CONST_CursorLocationClient = 2
Private m_Recordset As ADODB.Recordset
'For Public Recordset function
Private cSQL$
'**********************************************************************
Public Function cGetRecordset(ByRef sql) As ADODB.Recordset
Set m_Recordset = New ADODB.Recordset
cSQL = sql
cOpenRecordset
Set cGetRecordset = m_Recordset
End Function
'**********************************************************************
Public Property Set Recordset(Value As ADODB.Recordset)
'Assigns private variable a property
If Not Value Is Nothing Then Set m_Recordset = Value
End Property
'**********************************************************************
Public Property Get Recordset() As ADODB.Recordset
'Reads the recordset from the private variable and assigns to new object variable
Set Recordset = m_Recordset
End Property
'********************************** PRIVATE SECTION **********************************
Private Sub cOpenRecordset()
On Error GoTo eh
'Ensures that if a recordset is opened from previously that it closes before opening a new one
If m_Recordset.State adStateClosed Then m_Recordset.Close
Set m_Recordset.ActiveConnection = conn
With m_Recordset
.LockType = CONST_LockType
.CursorType = CONST_CursorType
.CursorLocation = CONST_CursorLocationClient
.Source = cSQL
.Open .Source
End With
If Not m_Recordset.EOF Then m_Recordset.MoveFirst
Exit Sub
eh:
eh = "Error # " & Str(Err.Number) & " was generated by " & _
Err.Source & Chr(13) & Err.Description
MsgBox eh, vbCritical, "Open Recordset System"
End Sub
'**********************************************************************
Private Sub cCloseRecordset()
m_Recordset.Close
Set m_Recordset = Nothing
End Sub
'**********************************************************************
Private Sub Class_Terminate()
If Not (m_Recordset Is Nothing) Then Set m_Recordset = Nothing
End Sub
THIRD IS THE CODE BEHIND MY FormEntities FORM (USES THE THE cADO CLASS MODULE)
Option Explicit
Dim db As cADO
'**********************************************************************
Private Sub Form_Current()
LoadTab
End Sub
'**********************************************************************
Private Sub Form_Load()
Set db = New cADO
FetchRecordSource
End Sub
'**********************************************************************
Private Sub FetchRecordSource()
db.cGetRecordset ("SELECT * FROM dbo.Entities")
Set Forms("fEntities").Recordset = db.Recordset
End Sub
FOURTH AND FINALLY IS THE CODE BEHIND THE FormEntitiesEdit FORM (THIS FORM DOES NOT USE THE CLASS MODULE AND I CAN EDIT IT)
Option Compare Database
Option Explicit
Dim rsEntity As New ADODB.Recordset
'**********************************************************************
Private Sub Form_Load()
FetchRecordSource
End Sub
'**********************************************************************
Private Sub FetchRecordSource()
Set rsEntity.ActiveConnection = conn
'Sets the record source for the main form
With rsEntity
.LockType = adLockOptimistic
.CursorType = adOpenKeyset
.CursorLocation = adUseClient
.Source = "SELECT * FROM dbo.Entities"
.Open .Source
End With
Set Forms("fEntitiesEdit").Recordset = rsEntity
End Sub
'**********************************************************************
Private Sub CloseConn()
rsEntity.Close
End Sub
If Access Jet SQL could do the SQL I would bind this form to a Linked Table instead. However I am using a hierarchical (recursive) query which Jet SQL cannot do so I have to bypass the idea of bound forms to Linked Tables.
I have .Allow Edits and .AllowAdditions on the form set to true.
I also tried changing the .LockType on the ADO Recordset to
- adOpenKeyset and
- adOpenDynamic
My LockType is adLockOptimistic
As you can see the properties are set correctly to be able to edit the recordset I return.
I know this is true because when I use the FormEntitiesEdit form with the same properties it lets me edit the field. But when I use the Class Module to return (using the same properties) it says it's read-only.
This is important because as you can see it is a lot simpler to use the Class Module, just need it to return an editable recordset.
Anyone have ideas? suggestions?
