Private Sub Änderung()
 
Me.AenderungLabel1.DataBindings.Add("Text", Tab1BindingSource, "Aenderung", _
  True)
 
Dim con As New OleDbConnection
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data" & _
  "Source=Adr2006.mdb; Mode=ReadWrite;Persist Security Info=false"
 
Dim strSQL As String = "UPDATE Tab1 SET Aenderung = " & Me.AenderungLabel1.Text _
  & "  WHERE ID =" & Me.DataGridView1.CurrentRow.Index
 
 Dim com As New OleDbCommand(strSQL, con)
 com.Parameters.Add(New OleDbParameter("@Datum", OleDbType.DBDate))
 com.Parameters("@Datum").Value = DateTime.Now
 
        Try
            con.Open()
            com.ExecuteNonQuery()
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally
            con.Close()
        End Try
 
    End Sub

VB@rchiv its the Best