c++ - Accessing a Combobox inside a dataGridView Column? -

i'm working on scheduling program, , inside datagridview, have few combobox columns populated 3 entries upon creation, wanted able add more user creates them, have no idea how access combobox data. appreciated!

// initialized in separate part. /* system::windows::forms::datagridview^ datagridview;*/  system::windows::forms::datagridviewcomboboxcolumn^ newcol =      (gcnew system::windows::forms::datagridviewcomboboxcolumn());  datagridview->columns->addrange(gcnew cli::array< system::windows::forms::datagridviewcomboboxcolumn^  >(1) {newcol});    // add choices boxes. newcol->items->addrange("user inputted stuff", "more stuff", "add new...");  

solution

if have access data user entry , know column index datagridviewcomboboxcolumn, should able following wherever needed:

datagridviewcomboboxcolumn^ comboboxcolumn = datagridview->columns[the_combobox_column_index];  if (comboboxcolumn != nullptr) {     comboboxcolumn->items->add("the new user entry"); } 

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comments response

how change selected index of combobox (the 1 edit triggered on)? [...] want when new item added selected index set new item).

couple of ways come mind.

1. add single line within if-statement of above code. set default displayed value each datagridviewcomboboxcell in datagridviewcomboboxcolumn.

   if (comboboxcolumn != nullptr) {     comboboxcolumn->items->add("the new user entry");     comboboxcolumn->defaultcellstyle->nullvalue = "the new user entry"; } 

   • pros: clean, efficient. previous user-selected values left intact. cell's formattedvalue display new user value default if no other selection has been made.
   • cons: doesn't actually set cell's selected value, value return null on cells not explicitly user-selected.

2. actually set value of cells (based on criteria) user-added value.

   if (comboboxcolumn != nullptr) {     comboboxcolumn->items->add("the new user entry");      (int = 0; < datagridview->rows->count; i++)     {         datagridviewcomboboxcell^ cell = datagridview->rows[i]->cells[the_combobox_column_index];          if ( cell != nullptr /* , conditions met */ )         {             cell->value = "the new user entry";         }     } } 

   • pros: value of targeted cells actually set new user value.
   • cons: logic deciding which cells should affected more complicated.