unit9.~pas

一个功能完整的超市管理系统

unit Unit9;

interface

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

type
  Tgaoyuan07 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Label4: TLabel;
    Edit4: TEdit;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Query1: TQuery;
    Query2: TQuery;
    Label5: TLabel;
    Edit5: TEdit;
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  gaoyuan07: Tgaoyuan07;
  goods_ID: String;
  goods_Name: String;
  GRDJ: String;
  CSDJ: String;
  MySQL: String;
  MySQL1: String;
  SL:String;
implementation

{$R *.dfm}

procedure Tgaoyuan07.Button3Click(Sender: TObject);
begin
close;
end;

procedure Tgaoyuan07.Button1Click(Sender: TObject);
begin
 if edit1.Text='' then
   begin
    showmessage('请输入商品编号!');
    Edit1.SetFocus;
    exit;
  end;
  if edit2.Text='' then
    begin
    showmessage('请输入商品名称!');
    Edit2.SetFocus;
    exit;
  end;
  if edit3.Text='' then
    begin
    showmessage('请输入购入单价!');
    Edit3.SetFocus;
    exit;
  end;
  if edit4.Text='' then
    begin
    showmessage('请输入出售单价!');
    Edit4.SetFocus;
    exit;
    end;
      if edit5.Text='' then
    begin
    showmessage('请输入数量!');
    Edit5.SetFocus;
    exit;
    end;
  with query1 do
  begin
    close;
    sql.Clear;
    goods_ID:=edit1.Text;
    goods_Name:=edit2.Text;
    GRDJ:=edit3.Text;
    CSDJ:=edit4.Text;
    SL:=edit5.Text;
    MySQL:='UPDATE goods set GRDJ='''+GRDJ+''',CSDJ='''+CSDJ+''','''+SL+''' where goods_ID='''+goods_ID+''' and goods_Name='''+goods_Name+'''';
    sql.Add(MySQL);
    ExecSQL;
    showmessage('修改成功!');
  end;
end;

procedure Tgaoyuan07.Button2Click(Sender: TObject);
begin
   if edit1.Text='' then
   begin
    showmessage('请输入商品编号!');
    Edit1.SetFocus;
    exit;
  end;
  if edit2.Text='' then
    begin
    showmessage('请输入商品名称!');
    Edit2.SetFocus;
    exit;
  end;
  with query2 do
  begin
    close;
    sql.Clear;
    goods_ID:=edit1.Text;
    goods_Name:=edit2.Text;
    MySQL1:='DELETE * from goods set  where goods_ID='''+goods_ID+''' and goods_Name='''+goods_Name+'''';
    sql.Add(MySQL1);
    ExecSQL;
    showmessage('删除成功!');
  end;
end;

end.