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Command- und CommandText-Eigenschaft (Beispiel) (VB)

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Gilt für: Access 2013, Office 2013

Im folgenden Codebeispiel wird die Verwendung der Command-Eigenschaft veranschaulicht, um den Text einer Prozedur zu aktualisieren.

 
' BeginProcedureTextVB 
Sub Main() 
 On Error GoTo ProcedureTextError 
 
 Dim cnn As New ADODB.Connection 
 Dim cat As New ADOX.Catalog 
 Dim cmd As New ADODB.Command 
 
 ' Open the Connection 
 cnn.Open "Provider='Microsoft.Jet.OLEDB.4.0';" & _ 
 "Data Source='c:\Program Files\Microsoft Office\" & _ 
 "Office\Samples\Northwind.mdb';" 
 
 ' Open the catalog 
 Set cat.ActiveConnection = cnn 
 
 ' Get the Command 
 Set cmd = cat.Procedures("CustomerById").Command 
 
 ' Update the CommandText 
 cmd.CommandText = "Select CustomerId, CompanyName, ContactName " & _ 
 "From Customers " & _ 
 "Where CustomerId = [CustId]" 
 
 ' Update the Procedure 
 Set cat.Procedures("CustomerById").Command = cmd 
 
 'Clean up 
 cnn.Close 
 Set cat = Nothing 
 Set cmd = Nothing 
 Set cnn = Nothing 
 Exit Sub 
 
ProcedureTextError: 
 Set cat = Nothing 
 Set cmd = Nothing 
 
 If Not cnn Is Nothing Then 
 If cnn.State = adStateOpen Then cnn.Close 
 End If 
 Set cnn = Nothing 
 
 If Err <> 0 Then 
 MsgBox Err.Source & "-->" & Err.Description, , "Error" 
 End If 
End Sub 
' EndProcedureTextVB