Read data from ComboBox1
lazarus / 43-Android

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zeljkoc · 2012-12-02 18:38

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

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stab · 2012-12-04 06:25

Hi,

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

/stab

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zeljkoc · 2012-12-04 16:31

read ComboBox1.ItemIndex exit and error

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

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User137 · 2012-12-04 16:42

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).

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zeljkoc · 2012-12-04 17:11

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