C# Program to Check a Specified Type is Nested or not

In programming languages, nested means a class or a method or loop or structure is present inside another class or a method or loop or structure. In C#, we can check a specified type is nested or not using the IsNested property of the Type class. This property returns a value that represents whether the specified type(i.e., class, struct, etc) definition is nested inside another type definition. It will return true if the specified type is nested, otherwise returns false.

Syntax:

public bool IsNested { get; }

Example 1:

C#

// C# program to check a specified
// type is nested or not
using System;
using System.Reflection;

// Create a structure
struct Geeks
{

    // Create a nested structure named Gfg2
    // with hello() method
    public struct Gfg2
    {
        void hello()
        {
            Console.WriteLine("hello geeks!");
        }
    }
}

class GFG{

// Driver code
static void Main()
{

    // Check the type is nested or not
    Console.WriteLine(typeof(Geeks.Gfg2).IsNested);
}
}

Output:

True

Example 2:

C#

// C# program to check a specified
// type is nested or not
using System;
using System.Reflection;

// Create a class
public class Geeks
{

    // Create a nested class
    // with hello() method
    public class Gfg2
    {
        void myfun()
        {
            Console.WriteLine("hello geeks!");
        }
    }
}

class GFG{

// Driver code
static void Main()
{

    // Check the type is nested or not
    if (typeof(Geeks.Gfg2).IsNested == true)
    {
        Console.WriteLine("Gfg2 class is nested class");
    }
    else
    {
        Console.WriteLine("Gfg2 class is not nested class");

    }
}
}

Output:

Gfg2 class is nested class