C# Operators Overloading: Complete Guide To Learning & Fixing

Operator overloading refers to the concept of making a normal operator perform operations other than its own, traditional operation. In C#, you can predefine some overloadable operators, but other operators may not be overloadable.

How It Works

Brad Taylor, a professional writer and C# expert from the writing services reviews site Top Writing Reviews, says, “Overloading can be applied to operators. By doing that, you can use the same operator to do different operations. You pretty much get extra capabilities when applying those C# operators to user-defined data types.”

In other words, a user-defined type can be used to overload a predefined C# operator. This type will provide you with the custom implementation of an operation if one or both of the operands are of that specific type.

You can use the operator keyword to declare an operator. There are two main rules that the operator declaration should satisfy:

  1. It should include both a public and a static modifier.
  2. A unary operator has one input parameter. A binary operator has two input parameters. In either case, at least one of the parameters should have type T or T? where T is the type that contains the operator declaration.

You can also use the operator keyword to define a custom type conversion. Here are some examples to give you an idea of what overloading operators can look like in practice:

  • Unary operator overloading

  • Binary operator overloading

Keep in mind that to be able to perform operator overloading, you need to know which operators are overloadable in the first place. The next section has a list of operators and their overloadability.

After you have consulted the table, come back to the examples above and review them with a better understanding of the subject matter. Then, you can use the resources in the last section to practice your new skills.

C# Overloadable Operators

To give you a better idea of which C# operators are overloadable and which are not, here is a comprehensive table with all the key information on the operators:



+, -, *, /, %, &, |, <<, >>

All the C# binary operators are overloadable.

+, -, !,  ~, ++, –, true, false

All the C# unary operators are overloadable.

==, !=, <, >, <= , >=

All the relational operators are overloadable, but only as pairs.

&&, ||

Not overloadable. If a type with the overloaded true and false operators also overloads & or | operator in a specific way, the && and || operators can be evaluated for the operands of that type.

[] (array index operator)

Not overloadable. You can define an indexer.

() (conversion operator)

Not overloadable. You can define custom type conversions that can be performed by a cast expression.

+=, -=, *=, /=, %=

These compound assignment operators are overloadable. In C#, these operators are automatically overloaded when the respective binary operator is overloaded.

=, . , ?:, ->, new, is, as, sizeof

Not overloadable in C#.

Studying C#

Learning C# can be quite stressful, so if you are studying it on your own or writing a paper about C#, you might need some help. If your writing skills aren’t very good, you can get help from an experienced writer from the custom writing reviews site Rated by Students. They will help you write anything you are struggling with and will create your text for you quickly.

Even as an experienced programmer, it’s important to regularly update your skills and knowledge. You likely won’t be able to remember all the information above about the overloadability of C# operators just in one go, but it is still necessary to take your time to study the topic and improve your knowledge of it. With practice, you will no longer have to consult the overloadability table because you will have it memorized.

It’s a good idea to try some C# exercises to practice your writing skills both in operator overloading and in other topics. Here is a list of great resources you can use for practice:

  • Flexiple with a lot freelancers to hire and help you.
  • Edabit with over 350 different exercises and practice challenges presented in small portions to help you hone your skills one step at a time. You can even earn XP, unlock achievements, and level up. It’s a gamified and fun learning experience.
  • Exercism with code practice in 57 programming languages, including C#. The interface is user-friendly, and you can unlock new exercises as you make progress.

Final Thoughts

All in all, understanding the concept of C# operators overloading is important for every C# programmer, so it’s crucial to study this topic before you proceed. Use the information in this article to help you become a better C# programmer.

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