Read data from ComboBox1

[zeljkoc]

How  read data from ComboBox1
example Label1.Caption: = ComboBox1.Caption or
Label1.Caption := ComboBox1.Text
android read ComboBox1

[stab]

Hi,

Do like this:
Label1.Caption: = ComboBox1.Items[ComboBox1.ItemIndex];

/stab

[zeljkoc]

read ComboBox1.ItemIndex exit and error

lazarus 1.1
date: 2012-11-26
FPC version 2.7.1
SVN revision
39375

[User137]

ComboBox1.Text is correct way.

If you go for ComboBox1.ItemIndex, you need to check first that it is not -1. Because ComboBox1.Items[-1] will result bad error. If Combobox value is different than any item in its list, then Itemindex may be -1. You can also select it from the Object properties window, to give a reasonable start value. So this way only really works if typing to ComboBox is not allowed (check style properties).

[zeljkoc]

work Windows not work android

procedure TForm1.Button3Click(Sender: TObject);
begin
  if ComboBox1.ItemIndex <> -1 then
    Label1.Caption := ComboBox1.Items[ComboBox1.ItemIndex];
end;

ComboBox1.ItemIndex = -1

component:
 
 DBLookupComboBox1: TDBLookupComboBox;

not result DataSource, DataField   not add table

Windows work not work android