unit6.~pas

一个功能完整的超市管理系统

unit Unit6;

interface

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

type
  Tgaoyuan05 = class(TForm)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    TabSheet3: TTabSheet;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Button1: TButton;
    Button2: TButton;
    Query1: TQuery;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    Label3: TLabel;
    Edit3: TEdit;
    Label4: TLabel;
    Button3: TButton;
    Button4: TButton;
    Query2: TQuery;
    DataSource2: TDataSource;
    DBGrid2: TDBGrid;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Edit4: TEdit;
    Label8: TLabel;
    Button5: TButton;
    Button6: TButton;
    Query3: TQuery;
    DataSource3: TDataSource;
    DBGrid3: TDBGrid;
    Label9: TLabel;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  gaoyuan05: Tgaoyuan05;
  goods_ID:String;
  goods_Name:string;
  MySQL:string;
  MySQL1:string;
  MySQL2:string;
  SL:string;
  grdj:string;

implementation

{$R *.dfm}

procedure Tgaoyuan05.Button2Click(Sender: TObject);
begin
close;
end;

procedure Tgaoyuan05.Button1Click(Sender: TObject);
begin
if edit1.Text='' then
   begin
    showmessage('请输入商品名称!');
    Edit1.SetFocus;
    exit;
  end;
  if edit2.Text='' then
    begin
    showmessage('请输入商品编号!');
    Edit2.SetFocus;
    exit;
  end;
  with query1 do
  begin
    close;
    sql.Clear;
    goods_ID:=edit2.Text;
    goods_Name:=edit1.Text;
    MySQL:='select * from goods where goods_ID='''+goods_ID+''' or goods_name='''+goods_name+'''' ;
    sql.Add(MySQL);
    open;
    showmessage('查询成功!');
  end;
end;

procedure Tgaoyuan05.Button4Click(Sender: TObject);
begin
close;
end;

procedure Tgaoyuan05.Button3Click(Sender: TObject);
begin
  if edit3.Text='' then
    begin
    showmessage('请输入数量!');
    Edit3.SetFocus;
    exit;
  end;
  with query2 do
  begin
    close;
    sql.Clear;
    sl:= edit3.Text;
    MySQL1:='select * from goods where SL>='''+SL+'''';
    sql.Add(MySQL1);
    open;
    showmessage('查询成功!');
  end;                                      
end;

procedure Tgaoyuan05.Button6Click(Sender: TObject);
begin
close;
end;

procedure Tgaoyuan05.Button5Click(Sender: TObject);
begin
  if edit4.Text='' then
    begin
    showmessage('请输入购入单价!');
    Edit4.SetFocus;
    exit;
  end;
  with query3 do
  begin
    close;
    sql.Clear;
    GRDJ:= edit4.Text;
    MySQL2:='select * from goods where grdj>='''+GRDJ+'''';
    sql.Add(MySQL2);
    open;
    showmessage('查询成功!');
  end;
end;

end.