fdirectvdatarequestclientmain.pas

来自「就是这本书的随书代码。包括《实战Delphi 5.x-分布式多层应用系统篇》」· PAS 代码 · 共 51 行

unit fDirectvDataRequestClientMain;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  Db, DBClient, MConnect, SConnect, Grids, DBGrids, StdCtrls, ExtCtrls,
  DBCtrls;

type
  TForm4 = class(TForm)
    DBNavigator1: TDBNavigator;
    Panel1: TPanel;
    edtSearchField: TEdit;
    edtRecNo: TEdit;
    edtTime: TEdit;
    btnLocate: TButton;
    btnDataRequest: TButton;
    DBGrid1: TDBGrid;
    ClientDataSet1: TClientDataSet;
    SocketConnection1: TSocketConnection;
    DataSource1: TDataSource;
    cdsGeneral: TClientDataSet;
    cdsTemp: TClientDataSet;
    cdsDataRequest: TClientDataSet;
    procedure btnLocateClick(Sender: TObject);
    procedure btnDataRequestClick(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

{$R *.DFM}

procedure TForm4.btnLocateClick(Sender: TObject);
var
  lStart, lEnd : Integer;
begin
  lStart := GetTickCount;
  ClientDataSet1.Locate('NUM', edtSearchField.Text, [loCaseInsensitive, loPartialKey]);
  lEnd := GetTickCount;
  edtRecNo.Text := IntToStr(ClientDataSet1.RecordCount);
  edtTime.Text := FloatToStr((lEnd - lStart) / 1000.0) + '