unit1.~pas

这是一个关于delphi数据库方面的源程序

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Table1: TTable;
    Table2: TTable;
    DataSource1: TDataSource;
    DataSource2: TDataSource;
    DBGrid1: TDBGrid;
    DBGrid2: TDBGrid;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
   i: Integer;
   Info: String;
begin
Table1.Active := True;
Table2.Active := True;
   Info := 'The fields of table ' + Table1.TableName +
           ' are:'#13#10#13#10;
   for i := 0 to Table1.FieldCount - 1 do
      Info := Info + Table1.Fields[i].FieldName + ':' + inttostr(Table1.FieldDefs[i].Size) + #13#10;
  ShowMessage(Info);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
ShowMessage(inttostr(Table1.RecordSize));
end;

end.