.net制作的抽餐厅和游戏装备的小程序

随便新建一个asp.net web项目，拖入即可。现在知道为什么游戏老是暴不出好装备，因为他的权重是非常小地。。。中午吃饭随机一下，想去哪一家，就把权重值设大一点，再中不了，就认命吧！

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <！DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"><title>加权随机</title></head><body><form id="form1" runat="server"><div><asp:TextBox ID="txtNum" runat="server" Text="100" ></asp:TextBox><br /><br /><asp:Button ID="btnRandom" runat="server" Text="开始抽奖（装备）" onclick="btnRandom_Click"/><br /><br /><asp:Button ID="btnRandomFood" runat="server" Text="开始抽奖（餐厅）" onclick="btnRandomFood_Click"/><br /><br /><asp:Button ID="btnClear" runat="server" Text="清屏" onclick="btnClear_Click"/><br /><asp:Literal ID="lblResult" runat="server"></asp:Literal></div></form></body></html>

Default.aspx.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page{//<string,int>:<名称:权重>public Dictionary<string, int> Goods = new Dictionary<string, int>（）;public int TotalWeight = 0; public class Good{/// <summary>/// 名称/// </summary>public string Name{get;set;}/// <summary>/// 权重（大于等于1，否则出现的可能性为0）/// </summary>public int Weight{get;set;}} public List<Good> Result = new List<Good>（）; protected void Page_Load（object sender, EventArgs e）{} /// <summary>/// 初始化装备 俺是《梦三国》玩家，嘿嘿/// </summary>protected void InitGoods（）{Goods.Clear（）;TotalWeight = 0; Goods.Add（"寒冰爪", 2）; //神器（拳爪类）Goods.Add（"重毛皮", 300）;Goods.Add（"小毛皮", 1000）;Goods.Add（"轻毛皮", 1000）;Goods.Add（"神之防具打造书", 5）;Goods.Add（"传说武器打造书", 20）;Goods.Add（"紫檀树枝", 300）;Goods.Add（"硬毛皮", 600）;Goods.Add（"勾魂水晶", 8）;Goods.Add（"真龙炙舞剑", 30）;Goods.Add（"董卓勾魂", 1）;//神器中的神器（长柄类） foreach （KeyValuePair<string, int> kvp in Goods）{TotalWeight += kvp.Value;} } /// <summary>/// 初始化餐厅，公司楼下餐厅比较多，只写几个，意思意思。。。/// </summary>protected void InitFood（）{Goods.Clear（）;TotalWeight = 0; Goods.Add（"清真兰州", 1）;Goods.Add（"长安客", 1）;Goods.Add（"迎客松", 1）;Goods.Add（"吉祥混沌", 1）; foreach （KeyValuePair<string, int> kvp in Goods）{TotalWeight += kvp.Value;}} protected int GetTryParse（）{try{return int.Parse（txtNum.Text）;}catch {return 1;}} //开始抽奖（装备）protected void btnRandom_Click（object sender, EventArgs e）{InitGoods（）; lblResult.Text = lblResult.Text + "<br/>"; int Count = GetTryParse（）;for （int i = 1; i <= Count; i++）{Random rdm = new Random（GetRandomSeed（））; int Weight = rdm.Next（1, TotalWeight + 1）; ProduceResult（Weight）;} foreach （KeyValuePair<string, int> kvp in Goods）{int c = Result.Count（d => d.Name == kvp.Key）;double rate = c * 1.0 / Count * 1.0 * 100; lblResult.Text = lblResult.Text + "物品名称：" + kvp.Key + " 权重：" + kvp.Value + " 暴出次数：" + c.ToString（） + " 暴出率：" + rate + "%<br/>";} } //开始抽奖（餐厅）protected void btnRandomFood_Click（object sender, EventArgs e）{InitFood（）; lblResult.Text = lblResult.Text + "<br/>"; int Count = GetTryParse（）;for （int i = 1; i <= Count; i++）{Random rdm = new Random（GetRandomSeed（））; int Weight = rdm.Next（1, TotalWeight + 1）; ProduceResult（Weight）;} foreach （KeyValuePair<string, int> kvp in Goods）{int c = Result.Count（d => d.Name == kvp.Key）;double rate = c * 1.0 / Count * 1.0 * 100; lblResult.Text = lblResult.Text + "餐厅名称：" + kvp.Key + " 权重：" + kvp.Value + " 暴出次数：" + c.ToString（） + " 暴出率：" + rate + "%<br/>";} } /// <summary>/// 根据随机权重判断所在范围/// </summary>/// <param name="Weight"></param>protected void ProduceResult（int Weight）{int min = 1;int max = 1;foreach （KeyValuePair<string, int> kvp in Goods）{max = min + kvp.Value - 1; if （Weight >= min && Weight <= max）{Good g = new Good（）;g.Name = kvp.Key;g.Weight = kvp.Value;Result.Add（g）;return;} min = max + 1;}} /// <summary>/// 随机种子值（防止速度过快造成的重复）/// </summary>/// <returns></returns>private static int GetRandomSeed（）{byte[] bytes = new byte[4];System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider（）;rng.GetBytes（bytes）;return BitConverter.ToInt32（bytes, 0）;} //清屏操作protected void btnClear_Click（object sender, EventArgs e）{lblResult.Text = "";}}

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