CGDevTools Forum

HI

I want to use a TIWTGJQComboBoxEx to create a list to choose an item; I take the list from a TBOraQuery.
I connect everything but the combo I do not have any item.
In TIWTGJQComboBoxEx I insert the name of TBOraQuery in Datalink.DataSource and FiledName in the name of the field to display in the combo.
Something is missing?

Regards

P.S.
(if instead use a TIWCGDropDown, everything works)

Hello

You need to match the several ComboEx.Items[i].Value to the DataSet values, are you doing this?

I did not think it was necessary ... there is an object combo that gets automatically (such as TIWCGDropDown)?

and if I have to enter the values manually of what I need datalink?

otherwise I have to do for the table and enter the individual items? as you insert the key and the description?

Hi

Yes, only DropDown has items filled by a dataset, because it has ajax loading controlled by a given number of records. We don't want to take the risk to fill the combos with a lot of records.

understand...

1) and if I have to enter the values manually of what I need datalink?

2) that is correct?

Code: Select all

  while not dm.TBOraSepe1.EOF  do
   begin  IWCGJQComboBoxExAzie.Items.AddOption(dm.TBOraSepe1.FieldByName('SEDE_DESCR').AsString,dm.TBOraSepe1.FieldByName('EL').AsString, True);
 dm.TBOraSepe1.Next;
  end;


Hi again

not quite correct

Value is the key

i would do this,

Code: Select all

var
  Item: TIWCGJQComboBoxExItem;
begin
  dm.TBOraSepe1.First;
  while not dm.TBOraSepe1.EOF do
  begin
    Item:= IWCGJQComboBoxExAzie.Items.Add;
    Item.Value := IntToStr(dm.TBOraSepe1.FieldByName('EL').AsInteger); // ????
    Item.Caption:= dm.TBOraSepe1.FieldByName('SEDE_DESCR').AsString; 
    dm.TBOraSepe1.Next;
  end;
end;


if this is called in an ajax (or async) event, you need to call aditionally

IWCGJQComboBoxExAzie.AjaxReRender

Hi again, Jorge

actually works, thanks ...

but explain to me what is the datalink because I have to do things manually?

regards
Raul

Hello

In this case, the DataLink only selects the Item / Caption, for the currrent value.

ok ...

last question ..
how to control the selection in the combo box (then I do a query for a combo next connected)? old Delphi had onExit ...

Regards

You will find the suitable event in ComboBoxEx.JQComboBoxExOptions

http://www.cgdevtools.com/docs/_html/IWCGJQComboBox.TIWCGJQComboBoxExOptions.htm