editstudent.pas

来自「完整的delphi书籍源代码,大家有空的时候自己慢慢看看」· PAS 代码 · 共 74 行

unit EditStudent;

interface

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

type
  TEditStuFrm = class(TForm)
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    BitBtn1: TBitBtn;
    DBGrid1: TDBGrid;
    DBEdit5: TDBEdit;
    DBEdit6: TDBEdit;
    DBEdit7: TDBEdit;
    DBEdit8: TDBEdit;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label9: TLabel;
    DBComboBox1: TDBComboBox;
    Label10: TLabel;
    Edit1: TEdit;
    DBNavigator1: TDBNavigator;
    Table1: TTable;
    DataSource1: TDataSource;
    procedure BitBtn1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure DataSource1DataChange(Sender: TObject; Field: TField);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  EditStuFrm: TEditStuFrm;

implementation

{$R *.dfm}

procedure TEditStuFrm.BitBtn1Click(Sender: TObject);
begin
  close;
end;

procedure TEditStuFrm.FormShow(Sender: TObject);
begin
 with Table1 do
   begin
     IndexFieldNames:='StuNo';
     Open;
     Edit1.Text:=inttostr(recordcount);
   end;
end;

procedure TEditStuFrm.DataSource1DataChange(Sender: TObject; Field: TField);
begin
  Edit1.Text:=inttostr(Table1.recordcount);
end;

end.