Modern C# and .NET Tutorial: Cross-Platform Basics/

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Writing and Calling Methods

Writing and Calling Methods

Learn about methods in C#, including returning values, using tuples, and deconstructing types to extract information efficiently.

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Methods are members of a type that execute a block of statements. They are functions that belong to a type.

Returning values from methods

Methods can return a single value or return nothing:

  • A method that performs some actions but does not return a value indicates this with the void type before the method’s name.

  • A method that performs some actions and returns a value indicates this with the return value type before the method’s name.

For example, in the next task, we will create two methods:

  • WriteToConsole: This will act (writing some text to the console) but will return nothing from the method indicated by the void keyword.

  • GetOrigin: This will return a text value indicated by the string keyword.

Let’s write the code:

Step 1: In Person.cs, add statements to define the two methods that were described earlier, as shown in the following code:

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// methods
public void WriteToConsole()
{
    WriteLine($"{Name} was born on a {DateOfBirth:dddd}.");
}
public string GetOrigin()
{
    return $"{Name} was born on {HomePlanet}.";
}

Step 2: In Program.cs, add statements to call the two methods, as shown in the following code:

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bob.WriteToConsole();
WriteLine(bob.GetOrigin());

Step 3: Run ...