delphi ComboBox怎么添加下拉菜单的。。
rt
[解决办法]
unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm) ComboBox1: TComboBox; Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end;var Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);begin combobox1.Items.Add('ABC'); combobox1.Items.Add('cde');end;end.
[解决办法]
直接在items属性里添加
[解决办法]
还有一中:
combobox1.Items.CommaText :='ABC,abc';
就添加了 ABC 和 abc 下拉框
[解决办法]
combobox1.Items.CommaText :='AAA,bbb';
添加 AAA 和 bbb 下拉框
[解决办法]
1、直接付值:
combobox1.Items.Add('ABC');
combobox1.Items.Add('cde');
2、如果是要从表中读取来绑定:
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select id from table order by id');
ADOQuery1.Open;
if ADOQuery1.RecordCount >0 then
begin
ComboBox1.Items.Clear;
ADOQuery1.First;
while not ADOQuery1.Eof do
begin
ComboBox1.Items.Add(ADOQuery1.fieldbyname('id').AsString) ;
ADOQuery1.Next;
end;
end;