unit4.pas

一个简单的旅游管理系统

unit Unit4;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, DB, ADODB;

type
  TForm4 = class(TForm)
    GroupBox1: TGroupBox;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label4: TLabel;
    Label3: TLabel;
    Label7: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Memo1: TMemo;
    Memo2: TMemo;
    ADOConnection1: TADOConnection;
    ADOQuery1: TADOQuery;
    Label8: TLabel;
    Label9: TLabel;
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

uses Unit3;

{$R *.dfm}

procedure TForm4.Button2Click(Sender: TObject);
begin
edit1.Text:='';
edit2.Text:='';
edit3.Text:='';
edit4.Text:='';
memo1.Text:='';
memo2.Text:='';
end;

procedure TForm4.Button3Click(Sender: TObject);
begin
form4.Close;
end;

procedure TForm4.FormCreate(Sender: TObject);
begin
edit1.Text:='';
edit2.Text:='';
edit3.Text:='';
edit4.Text:='';
memo1.Text:='';
memo2.Text:='';
end;

procedure TForm4.Button1Click(Sender: TObject);
begin
if(edit1.text='') then
begin
showmessage('请输入景点名称');
exit;
end;
adoquery1.close;
adoquery1.sql.clear;
adoquery1.sql.add('select * from 旅游景点信息表 where 景点名称=:name');
adoquery1.Parameters.ParamByName('name').Value:=trim(edit1.text);
adoquery1.Open;
if adoquery1.Bof and adoquery1.Eof then
begin
adoquery1.sql.Clear;
adoquery1.SQL.Add('insert into 旅游景点信息表(景点名称,地理位置,开放时间,价位,历史情况,概况简介,景点图片)');
adoquery1.SQL.Add(' values(:name,:where,:time,:price,:history,:word,:pictrue)');
adoquery1.Parameters.ParamByName('name').value:=trim(edit1.text);
adoquery1.Parameters.ParamByName('where').value:=trim(edit2.text);
adoquery1.Parameters.ParamByName('time').value:=trim(edit3.text);
adoquery1.Parameters.ParamByName('price').value:=trim(edit4.text);
adoquery1.Parameters.ParamByName('history').value:=trim(memo1.text);
adoquery1.Parameters.ParamByName('word').value:=trim(memo2.text);
adoquery1.ExecSQL;
showmessage('添加旅游景点成功');
end
else
begin
showmessage('景点名称已经存在');
adoquery1.Close;
exit;
end;

end;

end.