📄 unit8.pas
字号:
unit Unit8;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DB, DBTables, Menus, Grids, DBGrids, StdCtrls, ExtCtrls, Mask,
DBCtrls, ADODB;
type
Typkcgl_form = class(TForm)
Panel1: TPanel;
Label1: TLabel;
ypmc_ledit: TEdit;
DBGrid1: TDBGrid;
Panel2: TPanel;
Label2: TLabel;
Label3: TLabel;
DataSource1: TDataSource;
ADOConnection1: TADOConnection;
ADOTable1: TADOTable;
Query1: TQuery;
DBEdit1: TDBEdit;
DBEdit2: TDBEdit;
DBNavigator1: TDBNavigator;
Edit1: TEdit;
Label4: TLabel;
ADOTable2: TADOTable;
ADOQuery1: TADOQuery;
ADOConnection2: TADOConnection;
DataSource2: TDataSource;
Label5: TLabel;
DBEdit3: TDBEdit;
procedure ypmc_leditChange(Sender: TObject);
procedure Edit1Change(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
ypkcgl_form: Typkcgl_form;
implementation
{$R *.dfm}
procedure Typkcgl_form.ypmc_leditChange(Sender: TObject);
Var SqlStr:string;
begin
With ADOQuery1 do
begin
close;
ADOQuery1.Sql.Clear;
SqlStr:='Select * from 图书信息 Where 名称='+''''+ypmc_ledit.Text+'''';
ADOQuery1.Sql.Add(SqlStr);
Open;
Edit1.Text:=Fieldbyname('编号').asstring;
end;
end;
procedure Typkcgl_form.Edit1Change(Sender: TObject);
var bh:string ;
begin
bh:=trim(Edit1.Text);
if length(bh)<=0 then
begin
showmessage('对不起,你要查询的图书不存在,请重新查询!');
exit;
end;
end;
end.
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