C#控制台输出退格实现变换闪烁的字符效果，传统的Console.Clear()方法能清除控制台上的所有内容。

如果用 Console.Write('\u0008');可以实现输出退格，这样就可以方便地清除某一个或者某几个字符内容。

实例如下：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Threading;

namespace ConsoleApplication2

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.Write("Number : ");

            for (int i = 0; i < 10000; i++)

            {

                switch (i)

                {

                    case 10: FlashingString(i, 1); break;

                    case 100: FlashingString(i, 2); break;

                    case 1000: FlashingString(i, 3); break;

                    case 10000: FlashingString(i, 4); break;

                    default: FlashingString(i); break;

                }

                Thread.Sleep(100); //间歇变换

            }

            Console.ReadLine();

        }

        //显示变换闪烁的字符方法

        public static void FlashingString(int num, int backlength = 0)

        {

            if (num > 0)

            {

                if (backlength <= 0) backlength = num.ToString().Length;

                // 清除旧的字符

                for (int i = 0; i < backlength; i++)

                {

                    //输出退格

                    Console.Write('\u0008');

                }

            }

            // 输出新字符

            Console.Write(num);

        }

    }

}