unit9.~pas

用户可选择不同权限进入系统。当以管理员权限进入系统时

unit Unit9;

interface

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

type
  TForm9 = class(TForm)
    ADOQuery1: TADOQuery;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Button1: TButton;
    Label3: TLabel;
    Edit3: TEdit;
    Button2: TButton;
    Label4: TLabel;
    Edit4: TEdit;
    Button3: TButton;
    Label5: TLabel;
    Edit5: TEdit;
    Button4: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form9: TForm9;

implementation

{$R *.dfm}

procedure TForm9.Button1Click(Sender: TObject);
begin
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.add('update achievements set 计算机网络='''+Edit2.Text+''' where 学号='''+Edit1.Text+'''');
ADOQuery1.ExecSQL;
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.sql.text:='select * from achievements';
ADOQuery1.open;
edit2.text:='';
end;

procedure TForm9.Button2Click(Sender: TObject);
begin
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.add('update achievements set 数据库='''+Edit3.Text+''' where 学号='''+Edit1.Text+'''');
ADOQuery1.ExecSQL;
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.sql.text:='select * from achievements';
ADOQuery1.open;
edit3.text:='';
end;

procedure TForm9.Button3Click(Sender: TObject);
begin
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.add('update achievements set 计算机组成原理='''+Edit4.Text+''' where 学号='''+Edit1.Text+'''');
ADOQuery1.ExecSQL;
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.sql.text:='select * from achievements';
ADOQuery1.open;
edit4.text:='';
end;

procedure TForm9.FormShow(Sender: TObject);
begin
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.add('select * from achievements ');
edit1.text:='';
ADOQuery1.open;
end;

procedure TForm9.Button4Click(Sender: TObject);
begin
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.add('update achievements set 专业='''+Edit5.Text+''' where 学号='''+Edit1.Text+'''');
ADOQuery1.ExecSQL;
ADOQuery1.close;
ADOQuery1.SQL.Clear;
ADOQuery1.sql.text:='select * from achievements';
ADOQuery1.open;
edit5.text:='';
end;

end.