C#生成随机字符串（数字，字母，特殊符号）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
//int number;
//int count = 7;
//string checkCode = String.Empty; //存放随机码的字符串 //System.Random random = new Random(); //for (int i = 0; i < count; i++) //产生7位校验码
//{
// number = random.Next();
// number = number % 36;
// if (number < 10)
// {
// number += 48; //数字0-9编码在48-57
// }
// else
// {
// number += 55; //字母A-Z编码在65-90
// } // checkCode += ((char)number).ToString();
//}
//Console.WriteLine(checkCode);
Program p = new Program();
bool booNumber = true;
bool booSign = true;
bool booSmallword = true;
bool booBigword = true;
//p.getRandomizer(7, booNumber, booSign, booSmallword, booBigword);
Console.WriteLine(p.getRandomizer(, booNumber, booSign, booSmallword, booBigword));
Console.ReadLine();
}
public string getRandomizer(int intLength, bool booNumber, bool booSign, bool booSmallword, bool booBigword)
{
//定义
Random ranA = new Random();
int intResultRound = ;
int intA = ;
string strB = "";
while (intResultRound < intLength)
{
//生成随机数A，表示生成类型
//1=数字，2=符号，3=小写字母，4=大写字母
intA = ranA.Next(, );
//如果随机数A=1，则运行生成数字
//生成随机数A，范围在0-10
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == && booNumber)
{
intA = ranA.Next(, );
strB = intA.ToString() + strB;
intResultRound = intResultRound + ;
continue;
}
//如果随机数A=2，则运行生成符号
//生成随机数A，表示生成值域
//1：33-47值域，2：58-64值域，3：91-96值域，4：123-126值域
if (intA == && booSign == true)
{
intA = ranA.Next(, );
//如果A=1
//生成随机数A，33-47的Ascii码
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == )
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
} //如果A=2
//生成随机数A，58-64的Ascii码
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == )
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
} //如果A=3
//生成随机数A，91-96的Ascii码
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == )
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
} //如果A=4
//生成随机数A，123-126的Ascii码
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == )
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
}
} //如果随机数A=3，则运行生成小写字母
//生成随机数A，范围在97-122
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == && booSmallword == true)
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
} //如果随机数A=4，则运行生成大写字母
//生成随机数A，范围在65-90
//把随机数A，转成字符
//生成完，位数+1，字符串累加，结束本次循环
if (intA == && booBigword == true)
{
intA = ranA.Next(, );
strB = ((char)intA).ToString() + strB;
intResultRound = intResultRound + ;
continue;
}
}
return strB;
}
}
}