lr2.pas

本人集结心血制作的delphi版学生信息管理系统

unit lr2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DBCtrls, StdCtrls, DB, ADODB, Mask, ComCtrls;

type
  TForm2 = class(TForm)
    ADOConnection1: TADOConnection;
    ADOTable1: TADOTable;
    DataSource1: TDataSource;
    ADOTable2: TADOTable;
    DataSource2: TDataSource;
    DataSource3: TDataSource;
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    DBEdit1: TDBEdit;
    Label3: TLabel;
    Label4: TLabel;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    Label5: TLabel;
    DBComboBox1: TDBComboBox;
    Label6: TLabel;
    Label7: TLabel;
    DBEdit4: TDBEdit;
    Label1: TLabel;
    DBLookupComboBox1: TDBLookupComboBox;
    Label2: TLabel;
    DBText1: TDBText;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    ADOTable3: TADOTable;
    procedure DBLookupComboBox1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

{$R *.dfm}

procedure TForm2.DBLookupComboBox1Click(Sender: TObject);
begin
adotable2.Open;
adotable3.Open;
dbedit1.Enabled:=true;
dbedit2.Enabled:=true;
dbedit3.Enabled:=true;
end;

procedure TForm2.Button3Click(Sender: TObject);
begin
adotable3.Cancel;
end;

procedure TForm2.Button2Click(Sender: TObject);
begin
if adotable3.State=dsedit then
adotable3.Post;
end;

procedure TForm2.Button4Click(Sender: TObject);
begin

if (adotable2['成绩1']=0) or(adotable2['成绩2']=0) or(adotable2['成绩3']=0) then
begin
adotable2.Insert;
dbedit1.Enabled:=false;
dbedit2.Enabled:=false;
dbedit3.Enabled:=false;
if adotable2['成绩1']=0 then
dbedit1.Enabled:=true;
if adotable2['成绩2']=0 then
dbedit2.Enabled:=true;
if adotable2['成绩3']=0 then
dbedit3.Enabled:=true;
end
else
begin
dbedit1.Enabled:=false;
dbedit2.Enabled:=false;
dbedit3.Enabled:=false;
end;

end;





procedure TForm2.Button5Click(Sender: TObject);
begin
if adotable2.State=dsedit then
adotable2.Post;

end;

procedure TForm2.Button6Click(Sender: TObject);
begin
adotable2.Cancel;
end;

procedure TForm2.Button1Click(Sender: TObject);
begin
adotable3.Insert;
end;

end.