生成一个8到15位随机密码

    /// <summary>
    /// 获取一个8到15位的随机密码
    /// </summary>
    /// <returns></returns>
    private string GetRandomPwd()
    {
        StringBuilder Vchar = new StringBuilder();
        Vchar.Append("0,1,2,3,4,5,6,7,8,9,");//数字
        Vchar.Append("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,");//小写字母
        Vchar.Append("A,B,C,D,E,F,G,H,I,G,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,");//大写字母
        Vchar.Append("_,*,@,#");//特殊字符
        string[] VcArray = Vchar.ToString().Split(',');
        string VNum = "";
        Random rand = new Random();
        int minPwd = rand.Next(8, 16);//随机生成的密码长度(7-15)
        for (int i = 1; i < minPwd; i++)
        {
            int t = rand.Next(VcArray.Length);
            VNum += VcArray[t];
        }
        return VNum;
    }