通过InstallShield 还原数据库的DLL（DELPHI）

library DBInstall;

{ Important note about DLL memory management: ShareMem must be the
first unit in your library''''s USES clause AND your project''''s (select
Project-View Source) USES clause if your DLL exports any procedures or
functions that pass strings as parameters or function results. This
applies to all strings passed to and from your DLL--even those that
are nested in records and classes. ShareMem is the interface unit to
the BORLNDMM.DLL shared memory manager, which must be deployed along
with your DLL. To avoid using BORLNDMM.DLL, pass string information
using PChar or ShortString parameters. }

uses
ComServ,
SysUtils,
Classes,
Forms,
uFrmMain in ''''uFrmMain.pas'''' {FrmMain};

{ Open the MainForm, the entertance of Library}
function OpenForm():integer; stdcall;
var
FrmMain: TFrmMain;
begin
FrmMain:=TFrmMain.Create(nil);
FrmMain.ShowModal();
result:=0;
FrmMain.Free;
end;

exports
DllGetClassObject,
DllCanUnloadNow,
DllRegisterServer,
DllUnregisterServer,
OpenForm;
{$R *.res}

begin
end.

unit uFrmMain;

interface

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

type
TFrmMain = class(TForm)
GroupBox1: TGroupBox;
Label1: TLabel;
Label2: TLabel;
txtUserName: TEdit;
txtPassword: TEdit;
btnOK: TButton;
dbConn: TADOConnection;
ADOQuery1: TADOQuery;
procedure FormShow(Sender: TObject);
procedure btnOKClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

implementation

{$R *.dfm}

procedure TFrmMain.FormShow(Sender: TObject);
begin
txtUserName.Text:=''''sa'''';
txtPassword.Text:='''''''';
end;

procedure TFrmMain.btnOKClick(Sender: TObject);
var
isErrRetry: bool;
begin
isErrRetry:=false;
dbConn.ConnectionString:=''''Provider=SQLOLEDB.1;''''
''''Password='''' Trim(txtPassword.Text) '''';Persist Security Info=True;User ID='''' Trim(txtUserName.Text) '''';Data Source=localhost'''';
try
dbConn.Open();
ADOQuery1.SQL.Text:=''''RESTORE DATABASE MyNwind FROM MyNwind_1'''';
ADOQuery1.ExecSQL;
except on E:Exception do
begin
if MessageDlg(''''存在错误:'''' E.Message ''''是否忽略'''',mtError,[mbRetry,mbIgnore],0)=mrRetry then
isErrRetry:=true
else
isErrRetry:=false;
end;
end;
dbConn.Close();

if not isErrRetry then ModalResult:=mrOK;
end;

end.

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