随机生成5位验证码

usingSystem;

usingSystem.Collections.Generic;

usingSystem.Linq;

usingSystem.Text;

//随机生成5位数的验证码

namespaceIdentifyCode

{

classProgram

{

staticvoidMain(string[]args)

{

intnumber;

charcode;

stringcheckCode=String.Empty;

Randomrandom=newRandom();

for(inti=0;i<5;i++)//每一次生成一个随机码

{

number=random.Next();

if(number%2==0)

code=(char)(''0''+(char)(number%10));

else

code=(char)(''A''+(char)(number%26));

checkCode+=code.ToString();

}

Console.WriteLine(checkCode);

}

}

}