udmdata.pas

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unit udmData;

interface

uses
  SysUtils, Classes, DB, ADODB;

type
  TdmData = class(TDataModule)
    ADOConnection1: TADOConnection;
    procedure DataModuleCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  dmData: TdmData;

implementation

{$R *.dfm}
uses Dialogs;

procedure TdmData.DataModuleCreate(Sender: TObject);
begin
  AdoConnection1.Connected := false;
  try
     AdoConnection1.Connected := true;
  except
     ShowMessage('不能连接到数据库！');
  end;
end;

end.