Private FragenDataTable as DataTable
Private FragenBinder as New BindingSource
..
Dim adapter as new MySqlDataAdapter("select * from tbFragen as f left join" & _
              "tbantworten as a on (f.FrageID = a.FrageID);", connectionString )
FragenDataTable = new DataTable("Fragen")
adapter.Fill(FragenDataTable)
 
FragenBinder.DataSource = FragenDataTable