怎么用C#计算骰子点数出现的概率

计算骰子点数出现的概率时，每种点数出现的次数用什么来实现，求完整代码谢谢 --------------------编程问答-------------------- 我的概率学的不好。 --------------------编程问答-------------------- 每种点数出现的概率不是1/6吗？ --------------------编程问答--------------------

1/6 这个代码应该怎么写。。。 --------------------编程问答-------------------- using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            ViewState["count"] = 0;
            ArrayList size = new ArrayList();
            for (int i = 0; i < 8; i++)
                size.Add(0);
            ViewState["size"] = size;
        }
    }
    protected void btn_Click(object sender, EventArgs e)
    {
        Double  count = Convert.ToDouble(ViewState["count "]);
       ArrayList  size =(ArrayList)ViewState["size"];
        Random r = new Random();
        Double  dot = r.Next(1, 9);
        lblnum.Text = dot.ToString();
        size[dot] = Convert.ToDouble (size[dot] )+ 1;
        count++;
        double g = Convert.ToDouble (size[dot] )/ count;
        lblgailv.Text = g.ToString();
        ViewState["count"] = count;
        ViewState["size"] = size;

    }
}
这个说是缺少程序集引用
不知道怎么改

补充：.NET技术 ,  C#