String connectionString = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=";
        connectionString +=  Server.MapPath("") + "\\App_Data\\SysLog.mdb"; //数据库相对路径
        OleDbConnection myConnection = new OleDbConnection(connectionString);        OleDbCommand myCommand = new OleDbCommand("insert into SysLog(UserName,UserIPAddress,LicenseCount) values('11','22','33')", myConnection);
        myConnection.Open();
        myCommand.ExecuteNonQuery();myConnection.Close();