List some different ways ...

Here are some different ways to perform equality checks in .NET:

Equality Operators

• == and != operators can be used to compare values for equality and inequality. These operators use the Equals method under the hood.
• object.Equals(obj1, obj2) static method can be used to compare two objects for equality.
• object.ReferenceEquals(obj1, obj2) static method can be used to check if two object references point to the same object instance.

IEquatable Interface

• Implement the IEquatable<T> interface on your class and provide an Equals method implementation.
• This allows you to compare instances of your class using == and != operators and Equals method.

Overriding Equals and GetHashCode Methods

• Override the Equals and GetHashCode virtual methods on your class to define custom equality logic.
• Ensure that GetHashCode returns the same hash code for equal objects.
• This allows using your class as a key in hash-based collections like Dictionary and HashSet.

Comparing Specific Properties

• Use LINQ's SequenceEqual extension method to compare two sequences of values for equality.
• Use object.Equals to compare specific properties of tw...