vb.net - DataGridView ComboBox -

i have program has datagridview 2 combobox , 2 textbox. first combobox contains oids , other combobox contains snmp operation (get & getnext). want add combobox beside oid’s combobox contains description oids (like 1.3.6.1.2.1.1.1.0 sysdescr , on), , value of new combobox(the 1 description of oids) changes automatically user changes oid in first combobox. possible? if yes how? here code: imports system imports snmpsharpnet

public class form1 private sub datagridview1_cellcontentclick(byval sender system.object, byval e system.windows.forms.datagridviewcelleventargs) handles datagridview1.cellcontentclick

end sub  private sub button1_click_1(byval sender system.object, byval e system.eventargs) handles button1.click     datagridview1.columns.add("nameone", "column one")     datagridview1.columns.add("nametwo", "column two")      dim datagridrow new datagridviewrow()     dim cells datagridviewcell() = new datagridviewcell(1) {}     dim txt1a new datagridviewtextboxcell()     dim txt1b new datagridviewtextboxcell()     txt1a.value = "host"     txt1b.value = "115.186.118.130"     datagridrow.cells.add(txt1a)     txt1a.[readonly] = true     datagridrow.cells.add(txt1b)     datagridrow.height = 20     datagridview1.rows.add(datagridrow)      datagridrow = new datagridviewrow()     cells = new datagridviewcell(1) {}      dim txt2a new datagridviewtextboxcell()     dim cbo1 new datagridviewcomboboxcell()      cbo1.items.add("1.3.6.1.2.1.1.1.0")     cbo1.items.add("1.3.6.1.2.1.1.2.0")     cbo1.items.add("1.3.6.1.2.1.1.3.0")     cbo1.items.add("1.3.6.1.2.1.1.4.0")     cbo1.items.add("1.3.6.1.2.1.1.5.0")      cbo1.value = cbo1.items(0)      cbo1.[readonly] = false     txt2a.value = "oids"     datagridrow.cells.add(txt2a)     txt2a.[readonly] = true     datagridrow.cells.add(cbo1)     datagridrow.height = 20     datagridview1.rows.add(datagridrow)      dim requestoid() string     requestoid = new string() {cbo1.selected}      datagridrow = new datagridviewrow()     cells = new datagridviewcell(1) {}     dim txt3a new datagridviewtextboxcell()     dim cbo2 new datagridviewcomboboxcell()      cbo2.items.add("get")     cbo2.items.add("getnext")     cbo2.value = cbo2.items(0)      cbo2.[readonly] = false     txt3a.value = "snmp operation"     datagridrow.cells.add(txt3a)     txt3a.[readonly] = true     datagridrow.cells.add(cbo2)     datagridrow.height = 20     datagridview1.rows.add(datagridrow)      datagridrow = new datagridviewrow()     cells = new datagridviewcell(1) {}     dim txt4a new datagridviewtextboxcell()     dim txt4b new datagridviewtextboxcell()     txt4a.value = "community string"     txt4b.value = "public"     datagridrow.cells.add(txt4a)     datagridrow.cells.add(txt4b)     datagridrow.height = 20     datagridview1.rows.add(datagridrow) end sub  private sub datagridview1_editingcontrolshowing(byval sender object, byval e datagridvieweditingcontrolshowingeventargs)     dim combocontrol datagridviewcomboboxeditingcontrol = trycast(e.control, datagridviewcomboboxeditingcontrol)     if combocontrol isnot nothing         ' set dropdown style editable combobox         if combocontrol.dropdownstyle <> comboboxstyle.dropdown             combocontrol.dropdownstyle = comboboxstyle.dropdown         end if     end if end sub  private sub button2_click(byval sender system.object, byval e system.eventargs) handles button2.click      dim result dictionary(of oid, asntype)      dim cbo1 new datagridviewcomboboxcell()       dim txt1b new datagridviewtextboxcell()     txt1b.value = "203.81.211.117"      dim host string     dim community string     host = datagridview1.rows(0).cells(1).value.tostring     community = datagridview1.rows(3).cells(1).value.tostring     dim txt4b new datagridviewtextboxcell()     txt4b.value = "public"     dim snmp new simplesnmp     snmp = new simplesnmp(datagridview1.rows(0).cells(1).value.tostring, datagridview1.rows(3).cells(1).value.tostring)      'abc.text = txtsnmpaction.selecteditem     result = snmp.get(snmpversion.ver1, new string() {datagridview1.rows(1).cells(1).value.tostring()})      'result = snmp.getnext(snmpversion.ver1, requestoid)     'if (txtsnmpaction = "getbulk")     'result = snmp.getbulk(new string() {".1.3.6.1.2", ".1.3.6.1.3"})     ' end if     if not snmp.valid          messagebox.show("invalid hostname/community")      end if     if result isnot nothing         dim kvp keyvaluepair(of oid, asntype)         each kvp in result             messagebox.show(kvp.key.tostring)             messagebox.show(snmpconstants.gettypename(kvp.value.type))             messagebox.show(kvp.value.tostring())          next kvp     else         messagebox.show("no results received")     end if  end sub 

end class

i'd make snmp operation read-only text field , set programatically. handle datagridview1.cellvaluechanged event.

edit: changing description rather snmp operation.

private sub datagridview1_cellvaluechanged(sender object, e system.windows.forms.datagridviewcelleventargs) handles datagridview1.cellvaluechanged     if e.columnindex = 3         dim row datagridviewrow = datagridview1.rows(e.rowindex)         dim description string = nothing         select case row.cells(3).value             case "1.3.6.1.2.1.1.1.0" : description = "sysdescr"             ...         end select         row.cells(5).value = description ' change (5) description column index.     end if end sub