unity验证码功能

private static char[] constant = 
	{
		'0','1','2','3','4','5','6','7','8','9',   
		'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',   
		'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'   

调用SetDeleKey生成验证码 传入验证码长度

private void SetDeleKey (int Length)
	{
		StringBuilder newRandom = new StringBuilder(62);
		System.Random rd = new System.Random();
		for (int i = 0; i < Length; i ++)
		{
			newRandom.Append(constant[rd.Next(62)]); //rd.Next(62)返回小于62的非负随机数,Append将Length次随机的码进行拼接
		}
		DeleKey.text = newRandom.ToString();
	}