C# 手机号中间四位星号显示
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApp22
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("手机号中间四位星号显示: {0}", HideMobile("13312341234"));
Console.Read();
}
/// <summary>
/// 隐藏手机号中间4位
/// </summary>
/// <param name="mobile"></param>
/// <returns></returns>
public static string HideMobile(string mobile)
{
if (mobile.Length == 11)
{
return mobile.Substring(0, 3) + "****" + mobile.Substring(7);
}
else
{
return mobile;
}
}
}
}