unit6.~pas

来自「数据库编程 人事档案管理」· ~PAS 代码 · 共 88 行

unit Unit6;

interface

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

type
  TForm6 = class(TForm)
    Query1: TQuery;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    RG: TRadioGroup;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form6: TForm6;

implementation

{$R *.dfm}

procedure TForm6.Button1Click(Sender: TObject);
begin
case rg.ItemIndex of
0:begin
   if length(trim(edit1.Text ))=0 then
   begin
   messagedlg('没有输入商品名称，重新输入',mterror,[mbok],0);
   edit1.SetFocus ;
   exit;
   end;
   with query1 do
   begin
   close;
   sql.Clear ;
   sql.Add('select * from ''入库单''');
   sql.Add('where 商品名称=:id');
   parambyname('id').AsString :=trim(edit1.Text );
   open;
   if recordcount>0 then
   dbgrid1.Enabled :=true
   else
   begin
   messagedlg('所要查找的商品并不存在，请您重新核对',mtinformation,[mbok],0);
   dbgrid1.Enabled :=false;
   end;
   end;
   end;

1:begin
   if length(trim(edit1.Text ))=0 then
   begin
   messagedlg('没有输入入库日期，重新输入',mterror,[mbok],0);
   edit1.SetFocus ;
   exit;
   end;
   with query1 do
   begin
   close;
   sql.Clear ;
   sql.add( 'select * from ''入库单'' where 入库日期=:rq');
   parambyname('rq').Value  :=strtodate(edit1.Text );
   open;
   if recordcount>0 then
   dbgrid1.Enabled :=true
   else
   begin
   messagedlg('所要查找的商品并不存在，请您重新核对',mtinformation,[mbok],0);
   dbgrid1.Enabled :=false;
   end;
   end;
   end;
   end;

end;

end.