Draw hourglass

Write a method that draws hourglass shape like below.
Expected input and output
DrawHourglass() → *********** ********* ******* ***** *** * *** ***** ******* ********* ***********
using System;

namespace CSharpExercises.Exercises.Loops
{
    class DrawHourglassTask
    {
        static void DrawHourglass()
        {
            for (var i = 0; i <= 10; i++)
            {
                for (var j = 0; j < (i <= 5 ? i : 10 - i); j++)
                {
                    Console.Write(" ");
                }
                for (var k = i <= 5 ? i : 10 - i; k <= (i <= 5 ? 10 - i : i); k++)
                {
                    Console.Write("*");
                }
                for (var m = 10 - i; m < 10; m++)
                {
                    Console.Write(" ");
                }
                Console.WriteLine();
            }
        }

        static void Main(string[] args)
        {
            DrawHourglass();
        }
    }
}