Clight_14_NameInFrame

using System;

namespace Clight_14
{
    class Program
    {
        static void Main()
        {
            string userName = " ";
            char frameElement = ' ';

            string middleLine;
            string sideLine = "";

            Console.Write("Введите своё имя: ");
            userName = Console.ReadLine();

            Console.Write("Введите символ - элемент рамки: ");
            frameElement = Console.ReadLine()[0];

            middleLine = frameElement + userName + frameElement;

            foreach (char symbol in middleLine)
                sideLine += frameElement;

            Console.WriteLine(sideLine);
            Console.WriteLine(middleLine);
            Console.WriteLine(sideLine);
            Console.ReadKey();
        }
    }
}