Delphi入门知识链接数据库（不喜勿喷，高手求赐教）

unit 数据连接成功;


interface


uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Data.DB, Data.Win.ADODB, Vcl.StdCtrls;


type
  TForm1 = class(TForm)
    Button1: TButton;
    ADOConnection1: TADOConnection;
    ADOQuery1: TADOQuery;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;


var
  Form1: TForm1;


implementation


{$R *.dfm}


procedure TForm1.Button1Click(Sender: TObject);
var
    strConn,strSQL:string;
begin
    ADOConnection1:=TADOConnection.Create(Self);
    strConn:='provider=MSDAORA.1;Password=whwy2014;User ID=whwyhis;Data Source=whwyhis;Persist Security Info=True';
    ADOConnection1.ConnectionString:=strConn;
    ADOConnection1.Open;
    if ADOConnection1.Connected then
       begin
         ShowMessage('数据库连接成功');
       end
    else
       begin
         ShowMessage('数据库连接失败');
       end;
end;


end.

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