unit Unit_DM;

interface

uses
SysUtils, Classes, DB, ADODB,inifiles,windows,forms,controls;

type
TDM = class(TDataModule)
ADOConn: TADOConnection;
DS_BomFind: TDataSource;
Qry_BomFind: TADOQuery;
procedure DataModuleCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
userIdStr,passwordStr,ServerNameStr,dataBaseNameStr,inifilePath:string;
end;

var
DM: TDM;

implementation

{$R *.dfm}


procedure TDM.DataModuleCreate(Sender: TObject);
var
conn:tinifile;

begin
//数据库连接设置。 conn.ini
iniFilePath:=ExtractFilePath(application.ExeName); //获取INI文件路径。
if inifilePath[length(inifilePath)]='' then
begin
iniFilePath:=iniFilePath+'conn.ini';
conn:=tinifile.Create(iniFilePath);
end
else
begin
iniFilePath:=iniFilePath+'conn.ini';
conn:=tiniFile.Create(inifilePath);
end;
if not FileExists(iniFilePath) then
begin
application.MessageBox('配置文件不存在!','提示',mb_OK) ;
APplication.Terminate;
end;
// providerStr:=conn.ReadString('config','provider','');
UserIDStr:=conn.ReadString('config','userID','');
passwordStr:=conn.ReadString('config','password','');
ServerNameStr:=conn.ReadString('config','ServerName','');
dataBaseNameStr:=conn.ReadString('config','DataBaseName','');
if (ServerNameStr='') or (DatabaseNameStr='') then
begin
application.MessageBox('数据库配置不正确，请重新配置!','提示',mb_ok);
Application.Terminate;
end;
ADOconn.Close;
ADOconn.ConnectionString:='';
ADOconn.ConnectionString:='Provider=SQLOLEDB.1;User ID='+UserIDstr+';Password='+Passwordstr+ ';Data Source='+ServerNameStr+ ';Initial Catalog='+DatabaseNamestr;
// adoconn.ConnectionString:='Provider='+Providerstr+';User ID='+UserIDstr+';Password='+Passwordstr+ ';Data Source='+DataSourceStr+ ';Initial Catalog='+DatabaseNamestr;

try
adoconn.Connected:=true;
except
application.MessageBox('数据库配置不正确，请重新配置!','提示',mb_ok);
adoconn.Connected:=false;
application.Terminate;
end;
end;

end.

下面是conn.INI文件内容：

[config]
UserID=sa
Password=密码
ServerName=服务器名或IP地址
DatabaseName=用户数据库名