userdel.~pas

完成酒店管理系统

unit UserDel;

interface

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

type
  TUserDelFrm = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    ADOQuery1: TADOQuery;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  UserDelFrm: TUserDelFrm;

implementation

{$R *.dfm}

procedure TUserDelFrm.Button2Click(Sender: TObject);
begin
Edit1.Text:= '';
Edit1.SetFocus;
end;

procedure TUserDelFrm.Button1Click(Sender: TObject);
var
loc :Boolean;
begin
if Edit1.Text = '' then
begin
ShowMessage('输入数据不能为空，请重新输入！');
Edit1.Text:= '';
Edit1.SetFocus;
end;
loc:= ADOQuery1.Locate('用户名',Edit1.Text,[locaseInsensitive]);
if loc then
begin
ADOQuery1.Delete;
MainSailFrm.ADOTable1.Refresh;
MainSailFrm.DBGrid1.Refresh;
ShowMessage('已经删除该记录！');

end
else
begin
ShowMessage('不存在此记录，请重新输入！');
Edit1.Text:= '';
Edit1.SetFocus;
end;
end;
end.