demo3.pas

里面包含有101种简易的Delphi源码

unit demo3;

interface

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

type
  TForm1 = class(TForm)
    Table1Name: TStringField;
    Table1Email: TStringField;
    Table1Qq: TStringField;
    Table1Tel: TStringField;
    DBGrid1: TDBGrid;
    Panel1: TPanel;
    DataSource1: TDataSource;
    Panel2: TPanel;
    Table1: TTable;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { private declarations }
  public
    { public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
begin
  Table1.Open;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  try
    table1.Append;
  finally
    table1.Post;
    table1.Refresh;
  end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  try
    table1.Edit;
  finally
    table1.Post;
    table1.Refresh;
  end;
  
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  if table1.RecordCount>0
    then if application.MessageBox('确认要删除本条记录吗?','确定',MB_YESNOCANCEL+MB_ICONINFORMATION)=IDYes
      then table1.Delete;

end;

procedure TForm1.Button4Click(Sender: TObject);
var
  mystring:string;
  YesOrNo:boolean;

begin
  mystring:='张三';
  YesOrNo:=InputQuery('输入查询条件','查询姓名为',mystring);
  if YesOrNo then
     begin
       table1.Filter:='Name='+''''+mystring+'''';
       table1.Filtered:=true;
     end
  else
     begin
       table1.Filter:='';
       table1.Filtered:=False;

     end
end;

end.