unit1.~pas

一系列DELPHI的控件如何使用的例子,例子有的比较简单,但是能详细的说明了控件的使用,对许多刚涉足DELPHI的朋友会很有帮助的

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DB, DBTables, Grids, DBGrids, ExtCtrls;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    DBGrid1: TDBGrid;
    Panel3: TPanel;
    DBGrid2: TDBGrid;
    Query1: TQuery;
    Query2: TQuery;
    DataSource1: TDataSource;
    DataSource2: TDataSource;
    procedure DBGrid1DblClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.DBGrid1DblClick(Sender: TObject);
begin
  with query2 do
    begin
    sql.Clear;
    sql.Add('select * from orders where custNo=:custNo');
    parambyname('custNo').AsFloat:=dbgrid1.Fields[0].AsFloat;
    open;
    end;
end;

end.