public bool Delete(string Id)
        {
            try
            {
                string query  = "DELETE from Employee WHERE Id = '" + Id + "'";
                string query1 = "DELETE from Login WHERE Id = '" + Id + "'";

                DatabaseConnectionClass dcc = new DatabaseConnectionClass();
                dcc.ConnectWithDB();
                int x = dcc.ExecuteSQL(query);
                dcc.CloseConnection();

                dcc.ConnectWithDB();
                int y = dcc.ExecuteSQL(query1);
                dcc.CloseConnection();
                return(true);
            }
            catch (Exception ex)
            {
                return(false);
            }
        }
        public bool Update(Admin a)
        {
            try
            {
                string query  = "UPDATE Admin SET Name = '" + a.Name + "', DOB = " + a.DOB + ", Gender = '" + a.Gender + "',Email= '" + a.Email + "',ContactNo= '" + a.ContactNo + "' WHERE Id= '" + a.ID + "'";
                string query1 = "UPDATE Login SET Username='******', Password='******', Type='Employee' WHERE Id= '" + a.ID + "' ";

                DatabaseConnectionClass dcc = new DatabaseConnectionClass();

                dcc.ConnectWithDB();
                int x = dcc.ExecuteSQL(query);
                dcc.CloseConnection();

                dcc.ConnectWithDB();
                int y = dcc.ExecuteSQL(query1);
                dcc.CloseConnection();
                return(true);
            }
            catch (Exception ex)
            {
                return(false);
            }
        }
        public bool Insert(Employee a)
        {
            try
            {
                string query  = "INSERT into Employee VALUES ('" + a.ID + "', '" + a.Name + "', '" + a.DOB + "','" + a.Gender + "','" + a.Email + "','" + a.ContactNo + "','" + a.Salary + "','" + a.Type + "','" + a.Address + "' )";
                string query1 = "INSERT into Login VALUES ('" + a.ID + "', '" + a.Username + "', '" + a.Password + "', 'Employee')";

                DatabaseConnectionClass dcc = new DatabaseConnectionClass();
                dcc.ConnectWithDB();
                int x = dcc.ExecuteSQL(query);
                dcc.CloseConnection();

                dcc.ConnectWithDB();
                int y = dcc.ExecuteSQL(query1);
                dcc.CloseConnection();


                return(true);
            }
            catch (Exception ex)
            {
                return(false);
            }
        }