Polymorphism with Rectangle Shapes_Lab

namespace Zau_Polymorphic_Rect_Lab
{
    [Serializable]
    public class Rectangle
    {

Polymorphism With Circle Shapes

namespace Polymorphic_Shapes
{
    public class Circle
    {

Inheritance_Employee_Lab

namespace Zau_Lab_Employee
{
    [Serializable]
    public class employee
    {
        //private fields
        private string _fName;
        private string _lName;
        private string _emeId;
        private DateTime _dateHire;

Intro To Inheritance (Shapes) - Update

namespace Introduction_To_Inheritance
{
    public class Circle
    {

Object Containing objects

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

Inheritance_Rectangle Shapes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

Intro_To_Inheritance

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

HTML

<!-- Adding <optgroup> tag to the dropdown list element. this tag allows you to group your list by category
            -->
        <p>
            Adding &lt;optgroup&gt; tag to the dropdown list element. this tag allows you to group your list by category
        </p>
        <select name="cars">
            <optgroup label="Japanese Cars">
                <option value="Toyota">Toyota</option>
                <option value="Honda">Honda</option>
                <option value="Nissan">Nissan</option>
            </optgroup>
            <optgroup label="Sweedish Cars">
                <option value="Volvo">Volvo</option>
                <option value ="Saab">Saab</option>
            </optgroup>
            <optgroup label="German Cars">
                <option value="BMW">BMW</option>
                <option value="Mercedes">Mercedes</option>
                <option value="Audi">Audi</option>
            </optgroup>
            <optgroup label="American Cars">
                <option value="Ford">Ford</option>
                <option value="Chevrolet">Chevrolet</option>
            </optgroup>
        </select>
        <br /> <br />

        <textarea rows="10" cols="20" maxlength="256" wrap="soft" placeholder="Enter Comment"></textarea>

Object Containing Other Objects

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

BinaryReadWrite_LabAssignment

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

BinaryReaderWriter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;