Sheet 1

Option ExplicitPrivate WithEvents AsyncConnection As ADODB.Connection

Public Sub AsyncConnectionToDatabase()

Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False"

Set AsyncConnection = New ADODB.Connection AsyncConnection.Mode = adModeRead AsyncConnection.ConnectionString = ConnectionString AsyncConnection.Open Const SQL As String = _ "SELECT * FROM Customers WHERE Country = 'USA'"

Call AsyncConnection.Execute(SQL, , CommandTypeEnum.adCmdText _ Or ExecuteOptionEnum.adAsyncExecute) Debug.Print "I ran before the query finished" End Sub

Private Sub AsyncConnection_ExecuteComplete(ByVal RecordsAffected As Long, _ ByVal pError As ADODB.Error, adStatus As ADODB.EventStatusEnum, _ ByVal pCommand As ADODB.Command, _ ByVal pRecordset As ADODB.Recordset, _ ByVal pConnection As ADODB.Connection)

Debug.Print "Query finished" ' Checks to determine if we have any data If (pRecordset.EOF And pRecordset.BOF) Then Debug.Print "There is no data" End If ' Checks for errors Dim E As Error For Each E In pConnection.Errors Debug.Print E.Value Next ' Demonstrates an additional filter on the recordset pRecordset.Filter = "Region = 'OR'" ' Dumps the records based on the filter While (Not pRecordset.EOF) Debug.Print pRecordset("Region").Value pRecordset.MoveNext Wend ' Ignores the filter If (adStatus = EventStatusEnum.adStatusOK) Then Call Sheet1.Range("A1").CopyFromRecordset(pRecordset) End If If (pConnection.State = ObjectStateEnum.adStateOpen) Then pConnection.Close End If End Sub

Public Sub RecordsetNavigation()

Const SQL As String = _ "SELECT * FROM Customers" Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False"

Dim Recordset As Recordset Set Recordset = New Recordset Call Recordset.Open(SQL, ConnectionString, adOpenDynamic) Recordset.MoveLast While Not Recordset.BOF Debug.Print Recordset.Fields("CompanyName") Recordset.MovePrevious Wend

End Sub

Public Sub DescribeARow()

Const SQL As String = _ "SELECT * FROM Customers" Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False"

Dim Recordset As Recordset Set Recordset = New Recordset Call Recordset.Open(SQL, ConnectionString, adOpenDynamic) Recordset.MoveFirst Dim Field As Field For Each Field In Recordset.Fields Debug.Print "Name: " & Field.Name Debug.Print "Type: " & Field.Type Debug.Print "Size: " & Field.ActualSize Debug.Print "Value: " & Field.Value Debug.Print "***********************" Next End Sub

Public Sub CallStoredProcedure()

Const ConnectionString As String = _ "Provider=SQLOLEDB.1;Integrated Security=SSPI;" + _ "Persist Security Info=False;Initial Catalog=NorthwindCS;" + _ "Data Source=LAP800;Workstation ID=LAP800;" Dim Command As Command Set Command = New Command Command.ActiveConnection = ConnectionString Command.CommandText = "[Sales by Year]" Command.CommandType = CommandTypeEnum.adCmdStoredProc Dim BeginningDate As ADODB.Parameter Dim EndingDate As ADODB.Parameter Dim StartDate As Date StartDate = #1/1/1995# Dim EndDate As Date EndDate = #1/1/2004# Set BeginningDate = Command.CreateParameter("@Beginning_Date", _ DataTypeEnum.adDate, ParameterDirectionEnum.adParamInput, , StartDate) Set EndingDate = Command.CreateParameter("@Ending_Date", _ DataTypeEnum.adDate, ParameterDirectionEnum.adParamInput, , EndDate) Call Command.Parameters.Append(BeginningDate) Call Command.Parameters.Append(EndingDate) Dim Recordset As ADODB.Recordset Set Recordset = Command.Execute Call Sheet1.Range("A1").CopyFromRecordset(Recordset) End Sub

Public Sub PlainTextQuery()

Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False"

Dim Recordset As ADODB.Recordset ' Define the SQL Statement Const SQL As String = _ "SELECT CompanyName, ContactName " & _ "FROM Customers " & _ "WHERE Country = 'UK' " & _ "ORDER BY CompanyName" ' Initialize the Recordset object and run the query Set Recordset = New ADODB.Recordset Call Recordset.Open(SQL, ConnectionString, CursorTypeEnum.adOpenForwardOnly, _ LockTypeEnum.adLockReadOnly, CommandTypeEnum.adCmdText)

' Make sure we got records back If Not Recordset.EOF Then ' Dump the contents of the recordset onto the worksheet Call Sheet1.Range("A2").CopyFromRecordset(Recordset) ' Add headers to the worksheet With Sheet1.Range("A1:B1") .Value = Array("Company Name", "Contact Name") .Font.Bold = True End With ' Fit the column widths to the data Sheet1.UsedRange.EntireColumn.AutoFit Else Call MsgBox("Error: No records returned.", vbCritical) End If ' Close the recordset if it is still open If (Recordset.State And ObjectStateEnum.adStateOpen) Then Recordset.Close Set Recordset = Nothing End Sub

Public Sub SavedQuery() Dim Field As ADODB.Field Dim Recordset As ADODB.Recordset Dim Offset As Long Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False" ' Create the Recorset object and run the query. Set Recordset = New ADODB.Recordset Call Recordset.Open("[Sales By Category]", ConnectionString, _ CursorTypeEnum.adOpenForwardOnly, LockTypeEnum.adLockReadOnly, _ CommandTypeEnum.adCmdTable)

' Make sure we got records back If Not Recordset.EOF Then ' Add headers to the worksheet. With Sheet1.Range("A1") For Each Field In Recordset.Fields .Offset(0, Offset).Value = Field.Name Offset = Offset + 1 Next Field .Resize(1, Recordset.Fields.Count).Font.Bold = True End With ' Dump the contents of the recordset onto the worksheet. Call Sheet1.Range("A2").CopyFromRecordset(Recordset) ' Fit the column widths to the data. Sheet1.UsedRange.EntireColumn.AutoFit Else MsgBox "Error: No records returned.", vbCritical End If ' Close the recordset Recordset.Close Set Recordset = Nothing End Sub

Public Sub CheckError(ByVal RecordsAffected As Long, _ ByVal Expected As Long, ByVal Description As String)

If RecordsAffected Expected Then Call RaiseError(Description) End If

End Sub

Public Sub RaiseError(ByVal Description As String) Call Err.Raise(vbObjectError + 1024, , Description)End Sub

Public Function GetPrimaryKey(ByVal Command As ADODB.Command) As Long Dim RecordsAffected As Long Dim Recordset As ADODB.Recordset ' Retrieve the primary key generated for our new record. Command.CommandText = "SELECT @@IDENTITY" Set Recordset = Command.Execute(Options:=CommandTypeEnum.adCmdText) If Recordset.EOF Then Call RaiseError("Error retrieving primary key value.") End If GetPrimaryKey = Recordset.Fields(0).Value Recordset.Close

End Function

Public Sub ExecuteCommand(ByVal Command As ADODB.Command, _ ByVal CommandText As String, _ ByVal Description As String) Dim RecordsAffected As Long Command.CommandText = CommandText Call Command.Execute(RecordsAffected, , _ CommandTypeEnum.adCmdText Or ExecuteOptionEnum.adExecuteNoRecords) Call CheckError(RecordsAffected, 1, Description) End Sub

Public Sub InsertRecord(ByVal Command As ADODB.Command) Const CommandText As String = _ "INSERT INTO Shippers(CompanyName, Phone) " & _ "VALUES('Air Carriers', '(205) 555 1212')" Const Description As String = _ "Error executing INSERT statement." Call ExecuteCommand(Command, CommandText, Description) End Sub

Public Sub UpdateRecord(ByVal Command As ADODB.Command, ByVal Key As Long)

Dim CommandText As String CommandText = _ "UPDATE Shippers SET Phone='(206) 546 0086' " & _ "WHERE ShipperID=" & CStr(Key) & ";" Const Description As String = _ "Error executing UPDATE statement." Call ExecuteCommand(Command, CommandText, Description) End Sub

Public Sub DeleteRecord(ByVal Command As ADODB.Command, ByVal Key As Long)

Dim CommandText As String CommandText = "DELETE FROM Shippers WHERE ShipperID = " & CStr(Key) & ";" Const Description As String = _ "Error executing DELETE statement." Call ExecuteCommand(Command, CommandText, Description)

End Sub

Private Property Get ConnectionString() As String ConnectionString = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False" End Property

Public Sub InsertUpdateDelete()

Dim Command As ADODB.Command Dim Key As Long On Error GoTo ErrorHandler Set Command = New ADODB.Command Command.ActiveConnection = ConnectionString Call InsertRecord(Command) Key = GetPrimaryKey(Command) Call UpdateRecord(Command, Key) Call DeleteRecord(Command, Key)

ErrorExit: Set Command = Nothing Exit Sub ErrorHandler: Call MsgBox(Err.Description, vbCritical) Resume ErrorExitEnd Sub

Sheet 2Public Sub ExecuteStoredProcAsMethod()

Dim Connection As ADODB.Connection Dim Recordset As ADODB.Recordset Const ConnectionString As String = _ "Provider=SQLOLEDB.1;Integrated Security=SSPI;" + _ "Persist Security Info=False;Initial Catalog=NorthwindCS;" + _ "Data Source=LAP800;Workstation ID=LAP800;" On Error GoTo Cleanup Set Connection = New ADODB.Connection Set Recordset = New ADODB.Recordset Call Connection.Open(ConnectionString) Dim StartDate As Date, EndDate As Date StartDate = #1/1/1995# EndDate = #1/1/2004# Connection.Employee_Sales_by_Country StartDate, EndDate, Recordset Call Sheet1.Range("A1").CopyFromRecordset(Recordset)

Sheet1.UsedRange.EntireColumn.AutoFit Cleanup: If (Err.Number 0) Then Debug.Print Err.Description If (Connection.State = ObjectStateEnum.adStateOpen) Then Connection.Close If (Recordset.State = ObjectStateEnum.adStateOpen) Then Recordset.Close End Sub

Sheet 3Option Explicit

Private Const ConnectionString As String = _ "Provider=SQLOLEDB.1;Integrated Security=SSPI;" + _ "Persist Security Info=False;Initial Catalog=NorthwindCS;" + _ "Data Source=LAP800;Workstation ID=LAP800;"

Public Command As ADODB.CommandPublic Connection As ADODB.Connection

Private Sub CreateConnection() Set Connection = New ADODB.Connection Call Connection.Open(ConnectionString)End Sub

Private Sub DestroyConnection() If (Connection.State = ObjectStateEnum.adStateOpen) Then Connection.Close End If Set Connection = NothingEnd Sub

Private Sub PrepareCommandObject() Set Command = New ADODB.Command Set Command.ActiveConnection = Connection Command.CommandText = "InsertShippers" Command.CommandType = adCmdStoredProc Call Command.Parameters.Append( _ Command.CreateParameter("@RETURN_VALUE", DataTypeEnum.adInteger, _ ParameterDirectionEnum.adParamReturnValue, 0)) Call Command.Parameters.Append( _ Command.CreateParameter("@CompanyName", DataTypeEnum.adVarWChar, _ ParameterDirectionEnum.adParamInput, 40)) Call Command.Parameters.Append( _ Command.CreateParameter("@Phone", DataTypeEnum.adVarWChar, _ ParameterDirectionEnum.adParamInput, 24)) End Sub

Public Sub UseCommandObject() Dim Key As Long Dim RecordsAffected As Long On Error GoTo ErrorHandler CreateConnection PrepareCommandObject Command.Parameters("@CompanyName").Value = "Air Carriers" Command.Parameters("@Phone").Value = "(206) 555 1212" Call Command.Execute(RecordsAffected, , ExecuteOptionEnum.adExecuteNoRecords) If (RecordsAffected 1) Then Call Err.Raise(vbObjectError + 1024, , _ Description:="Error executing Command object.") End If Key = Command.Parameters("@RETURN_VALUE").Value Debug.Print "The key value of the new record is: " & CStr(Key) ErrorExit:

Set Command = Nothing DestroyConnection Exit Sub ErrorHandler: Call MsgBox(Err.Description, vbCritical) Resume ErrorExitEnd Sub

Sheet 4Option Explicit

Private Const ConnectionString As String = _ "Provider=SQLOLEDB.1;Integrated Security=SSPI;" + _ "Persist Security Info=False;Initial Catalog=NorthwindCS;" + _ "Data Source=LAP800;Workstation ID=LAP800;"

Public Connection As ADODB.ConnectionPublic Recordset As ADODB.Recordset

Public Sub CreateDisconnectedRecordset()

Dim SQL As String SQL = "SELECT CustomerID, CompanyName, ContactName, Country " & _ "FROM Customers"

Set Connection = New ADODB.Connection Connection.ConnectionString = ConnectionString Connection.Open Set Recordset = New ADODB.Recordset Recordset.CursorLocation = CursorLocationEnum.adUseClient Recordset.CursorType = CursorTypeEnum.adOpenStatic Recordset.LockType = LockTypeEnum.adLockBatchOptimistic Call Recordset.Open(SQL, Connection, , , CommandTypeEnum.adCmdText) Set Recordset.ActiveConnection = Nothing Call Sheet4.Range("A1").CopyFromRecordset(Recordset) ' Connection intentionally left openEnd Sub

Public Sub FilterDisconnectedRecordset() Call Sheet4.Range("A:D").Clear Recordset.Filter = "Country = 'Germany'" Recordset.Sort = "CompanyName" Call Sheet4.Range("A1").CopyFromRecordset(Recordset)End Sub

Public Sub RequeryConnection() Set Recordset.ActiveConnection = Connection Call Recordset.Requery(Options:=CommandTypeEnum.adCmdText) Set Recordset.ActiveConnection = Nothing

End Sub

Form 1 Option Explicit

Private Const ConnectionString As String = _ "Provider=SQLOLEDB.1;Integrated Security=SSPI;" + _ "Persist Security Info=False;Initial Catalog=NorthwindCS;" + _ "Data Source=LAP800;Workstation ID=LAP800;"

Private Sub UserForm_Initialize()

Dim Connection As ADODB.Connection Dim Recordset As ADODB.Recordset

Set Connection = New ADODB.Connection Connection.ConnectionString = ConnectionString Connection.Open Set Recordset = New ADODB.Recordset Call Recordset.Open("GetLookupValues", Connection, _ CursorTypeEnum.adOpenForwardOnly, LockTypeEnum.adLockReadOnly, _ CommandTypeEnum.adCmdStoredProc) Do While Not Recordset.EOF Call ComboBoxCustomers.AddItem(Recordset.Fields(1).Value) Recordset.MoveNext Loop Set Recordset = Recordset.NextRecordset Do While Not Recordset.EOF Call ComboBoxShippers.AddItem(Recordset.Fields(1).Value) Recordset.MoveNext Loop ' Closes the recordset implicitly Set Recordset = Recordset.NextRecordset If (Connection.State = ObjectStateEnum.adStateOpen) Then Connection.Close End Sub

Module 1

Option Explicit

Public Sub ConnectToDatabase()

Const ConnectionString As String = _ "Provider=Microsoft.Jet.OLEDB.4.0;" + _ "Data Source=C:\Program Files\Microsoft " + _ "Office\OFFICE11\SAMPLES\Northwind.mdb;Persist Security Info=False" Dim Connection As ADODB.Connection Set Connection = New ADODB.Connection Connection.ConnectionString = ConnectionString Connection.Open Debug.Print Connection.State = ObjectStateEnum.adStateOpen Const SQL As String = _ "SELECT * FROM Customers WHERE Country = 'USA'"

Dim Recordset As Recordset Dim RowsAffected As Long Set Recordset = Connection.Execute(SQL, RowsAffected, CommandTypeEnum.adCmdText) Debug.Print "Rows affected " & RowsAffected Call Sheet1.Range("A1").CopyFromRecordset(Recordset) If (Connection.State = ObjectStateEnum.adStateOpen) Then Connection.Close End If

End Sub