Age Example

AgeExmaple.cs

public void ValidateCustomer(int maximumAge)
{
  //...
}

ValidateCustomer(25);

// Using an Age class to restrict values

public class Age
{
  public Age(int age)
  {
    if(age < 0 || age > 130)
      throw new Exception("Invalid age. Age must be between 0 and 130");
  }
}

public void ValidateCustomer(Age maximumAge)
{
  // ...
}

var customerAge = new Age(25);
ValidateCustomer(age);