A **partial class** is one of the exclusive features of C#. With this feature, you can divide the functionality of one particular class into multiple different classes with the same name. 

> Use `partial` as a keyword to define partial classes.

# Code

In the code below, we have two different partial classes for a `Person` class. In the `Person1` class, we have a parameterized constructor for its `Name` and `Age`. In `Person2` class, we have a `Print()` function that prints `Name` and `Age`. When we execute this program, the compiler compiles these two partial classes into one single class.

public partial class Person { 
    private string Name; 
    private int Age; 
  
    public Person(string str, int a) 
    { 
        this.Name = str; 
        this.Age = a; 
    } 
}

public partial class Person { 
    public void Print() 
    { 
        System.Console.WriteLine("Name is: " + Name); 
        System.Console.WriteLine("Age is: " + Age); 
    } 
}

class PartialClassTest
{
    static void Main()
    {
        Person obj = new Person("Jane", 28);
        obj.Print();
    }
}

Partial classes in C#

C#'s partial classes allow splitting a class's functionality across multiple files with the same name.