這篇文章主要介紹“怎么用.net制作抽獎程序”，在日常操作中，相信很多人在怎么用.net制作抽獎程序問題上存在疑惑，小編查閱了各式資料，整理出簡單好用的操作方法，希望對大家解答”怎么用.net制作抽獎程序”的疑惑有所幫助！接下來，請跟著小編一起來學習吧！
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>加權隨機</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="開始抽獎(裝備)" onclick="btnRandom_Click"/> <br /> <br /> <asp:Button ID="btnRandomFood" runat="server" Text="開始抽獎(餐廳)" 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>:<名稱:權重>
public Dictionary<string, int> Goods = new Dictionary<string, int>();
public int TotalWeight = 0;
public class Good
{
/// <summary>
/// 名稱
/// </summary>
public string Name
{
get;
set;
}
/// <summary>
/// 權重（大于等于1，否則出現的可能性為0）
/// </summary>
public int Weight
{
get;
set;
}
}
public List<Good> Result = new List<Good>();
protected void Page_Load(object sender, EventArgs e)
{
}
/// <summary>
/// 初始化裝備 俺是《夢三國》玩家，嘿嘿
/// </summary>
protected void InitGoods()
{
Goods.Clear();
TotalWeight = 0;
Goods.Add("寒冰爪", 2); //神器（拳爪類）
Goods.Add("重毛皮", 300);
Goods.Add("小毛皮", 1000);
Goods.Add("輕毛皮", 1000);
Goods.Add("神之防具打造書", 5);
Goods.Add("傳說武器打造書", 20);
Goods.Add("紫檀樹枝", 300);
Goods.Add("硬毛皮", 600);
Goods.Add("勾魂水晶", 8);
Goods.Add("真龍炙舞劍", 30);
Goods.Add("董卓勾魂", 1); //神器中的神器（長柄類）
foreach (KeyValuePair<string, int> kvp in Goods)
{
TotalWeight += kvp.Value;
}
}
/// <summary>
/// 初始化餐廳，公司樓下餐廳比較多，只寫幾個，意思意思。。。
/// </summary>
protected void InitFood()
{
Goods.Clear();
TotalWeight = 0;
Goods.Add("清真蘭州", 1);
Goods.Add("長安客", 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;
}
}
//開始抽獎（裝備）
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 + "物品名稱：" + kvp.Key + " 權重：" + kvp.Value + " 暴出次數：" + c.ToString() + " 暴出率：" + rate + "%<br/>";
}
}
//開始抽獎（餐廳）
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 + "餐廳名稱：" + kvp.Key + " 權重：" + kvp.Value + " 暴出次數：" + c.ToString() + " 暴出率：" + rate + "%<br/>";
}
}
/// <summary>
/// 根據隨機權重判斷所在范圍
/// </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>
/// 隨機種子值（防止速度過快造成的重復）
/// </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 = "";
}
}到此，關于“怎么用.net制作抽獎程序”的學習就結束了，希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習，快去試試吧！若想繼續學習更多相關知識，請繼續關注億速云網站，小編會繼續努力為大家帶來更多實用的文章！
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