52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
---
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title: Method Overloading
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---
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# Method Overloading
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Default parameters were introduced in C# version 4.0, but up until that, C# coders have been using a different technique, which basically does the same, called method overloading. It allows the programmer do define several methods with the same name, as long as they take a different set of parameters. When you use the classes of the .NET framework, you will soon realize that method overloading is used all over the place.
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## Example
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1. Create a class file named Person.cs & input the following code.
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```
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public class Person
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{
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public string FirstName { get; private set; }
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public string LastName { get; set; }
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public Person(string firstName, string lastName)
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{
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this.FirstName = firstName;
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this.LastName = lastName;
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}
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public string SayHello(string name)
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{
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return "Hello there, " + name;
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}
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public string SayHello(Person person)
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{
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return "Hello there, " + person.FirstName + " " + person.LastName;
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}
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}
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```
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2. In your default Program.cs file you can call now this class Person using the method overloading.
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```
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class Program
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{
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static void Main(string[] args)
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{
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Person person = new Person("Jane", "Doe");
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Console.WriteLine(person.SayHello("Peter Smith"));
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Person friend = new Person("Chuck", "Norris");
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Console.WriteLine(person.SayHello(friend));
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Console.ReadKey();
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}
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}
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```
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