AddNew-Methode – Beispiel (VB)
In diesem Beispiel wird die AddNew-Methode verwendet, um einen neuen Datensatz mit dem angegebenen Namen zu erstellen.
'BeginAddNewVB
'To integrate this code
'replace the data source and initial catalog values
'in the connection string
Public Sub Main()
On Error GoTo ErrorHandler
'recordset and connection variables
Dim Cnxn As ADODB.Connection
Dim rstEmployees As ADODB.Recordset
Dim strCnxn As String
Dim strSQL As String
'record variables
Dim strID As String
Dim strFirstName As String
Dim strLastName As String
Dim blnRecordAdded As Boolean
' Open a connection
Set Cnxn = New ADODB.Connection
strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _
"Initial Catalog='Northwind';Integrated Security='SSPI';"
Cnxn.Open strCnxn
' Open Employees Table with a cursor that allows updates
Set rstEmployees = New ADODB.Recordset
strSQL = "Employees"
rstEmployees.Open strSQL, strCnxn, adOpenKeyset, adLockOptimistic, adCmdTable
' Get data from the user
strFirstName = Trim(InputBox("Enter first name:"))
strLastName = Trim(InputBox("Enter last name:"))
' Proceed only if the user actually entered something
' for both the first and last names
If strFirstName <> "" And strLastName <> "" Then
rstEmployees.AddNew
rstEmployees!firstname = strFirstName
rstEmployees!LastName = strLastName
rstEmployees.Update
blnRecordAdded = True
' Show the newly added data
MsgBox "New record: " & rstEmployees!EmployeeId & " " & _
rstEmployees!firstname & " " & rstEmployees!LastName
Else
MsgBox "Please enter a first name and last name."
End If
' Delete the new record because this is a demonstration
Cnxn.Execute "DELETE FROM Employees WHERE EmployeeID = '" & strID & "'"
' clean up
rstEmployees.Close
Cnxn.Close
Set rstEmployees = Nothing
Set Cnxn = Nothing
Exit Sub
ErrorHandler:
' clean up
If Not rstEmployees Is Nothing Then
If rstEmployees.State = adStateOpen Then rstEmployees.Close
End If
Set rstEmployees = Nothing
If Not Cnxn Is Nothing Then
If Cnxn.State = adStateOpen Then Cnxn.Close
End If
Set Cnxn = Nothing
If Err <> 0 Then
MsgBox Err.Source & "-->" & Err.Description, , "Error"
End If
End Sub
'EndAddNewVB