public void AddEmployeeToDB(string connectionString) { StudentDLL.StudentDAL sda = new StudentDLL.StudentDAL(); sda.InsertStudentIntoDB(connectionString, this); //SqlConnection objSqlConnection = new SqlConnection(connectionString); //string sqlCommand = "INSERT INTO tblStudent(StudentRollNo,StudentName,StudentAge,StudentAddress,StudentContact,StudentMarks) VALUES(" + Convert.ToInt32(StudentRollNo) + ",'" + Name + "'," + Convert.ToInt32(Age) + ",'" + Address + "'," + Convert.ToInt32(ContactNo) + "," + Convert.ToInt32(StudentMarks) + ")"; //SqlCommand objSqlCommand = new SqlCommand(sqlCommand, objSqlConnection); //objSqlConnection.Open(); //objSqlCommand.ExecuteNonQuery(); ////Response.Write("Connect Successfully"); //objSqlConnection.Close(); }