Comboxedit achieves level Two linkage

1 Private voidCmbxprovince_selectedindexchanged (Objectsender, EventArgs e)2         {3 DataBind (cmbxprovince, cmbxroad);4         }5 6         /// <summary>7         ///To achieve provincial and municipal8         /// </summary>9         /// <param name= "Cmbfirst" >Level One (district city)</param>Ten         /// <param name= "Cmbsecond" >level Two (street)</param> One          Public voidDataBind (Comboboxedit cmbfirst, Comboboxedit cmbsecond) A         { -             Switch(CmbFirst.Text.Trim ()) -             { the                  Case "Henan Province": - cmbSecond.Properties.Items.Clear (); -Cmbsecond.text =""; -CMBSECOND.PROPERTIES.ITEMS.ADD ("Zhengzhou"); +CMBSECOND.PROPERTIES.ITEMS.ADD ("Kaifeng"); -CMBSECOND.PROPERTIES.ITEMS.ADD ("Zhumadian"); +CMBSECOND.PROPERTIES.ITEMS.ADD ("Anyang"); ACMBSECOND.PROPERTIES.ITEMS.ADD ("Luoyang"); atCMBSECOND.PROPERTIES.ITEMS.ADD ("Zhoukou"); -  -                      Break; -                     -                  Case "Hebei province": - cmbSecond.Properties.Items.Clear (); inCmbsecond.text =""; -CMBSECOND.PROPERTIES.ITEMS.ADD ("Baoding"); toCMBSECOND.PROPERTIES.ITEMS.ADD ("Shijiazhuang"); +CMBSECOND.PROPERTIES.ITEMS.ADD ("Handan"); -                      Break; the                 //.......... *  $                 default:Panax Notoginseng                      Break; -             } the}

Comboxedit achieves level Two linkage