璇汇€婂ぇ璇濊璁℃ā寮忋€嬧€斺€斿簲鐢ㄧ瓥鐣ユā寮忕殑"鍟嗗満鏀堕摱绯荤粺"(WinForm)

Posted 2020-12-17

鏍囩锛?a href='http://www.mamicode.com/so/1/break' title='break'>break   鏌ヨ   nbsp   center   鏄剧ず   鍖哄埆   new   鐢熸垚   art   

绛栫暐妯″紡鐨勭粨鏋?/strong>

杩欎釜妯″紡娑夊強鍒颁笁涓鑹?

鐜锛圕ontext锛夎鑹?/strong>锛氭寔鏈変竴涓?Strategy 绫荤殑寮曠敤銆?br />鎶借薄绛栫暐锛圫trategy锛夎鑹?/strong>锛氳繖鏄竴涓娊璞¤鑹诧紝閫氬父鐢变竴涓帴鍙ｆ垨鎶借薄绫诲疄鐜般€傛瑙掕壊缁欏嚭鎵€鏈夌殑鍏蜂綋绛栫暐绫绘墍闇€鐨勬帴鍙ｃ€?br />鍏蜂綋绛栫暐锛圕oncreteStrategy锛夎鑹?/strong>锛氬寘瑁呬簡鐩稿叧鐨勭畻娉曟垨琛屼负銆?/p>

 

 

涓婄瘒鍗氭枃鍐欑殑CashSuper 灏辨槸鎶借薄绛栫暐锛岃€屾甯告敹璐?CashNormal銆佹墦鎶樻敹璐?CashRebate 鍜岃繑鍒╂敹璐?CashReturn 灏辨槸涓変釜鍏蜂綋绛栫暐锛屼篃灏辨槸绛栫暐妯″紡涓鐨勫叿浣撶畻娉曘€?/p>

 銆€銆€闄勪笂涓婄瘒鍗氭枃鐨勯儴鍒嗕唬鐮?/p>

//姝ｅ父娑堣垂锛岀户鎵緾ashSuper
    class CashNormal:CashSuper
    {
        public override double acceptCash(double money)
        {
            return money;
        }
    }

View Code

//鎵撴姌鏀惰垂娑堣垂锛岀户鎵緾ashSuper
    class CashRebate:CashSuper
    {
        private double moneyRebate = 1d;
        //鍒濆鍖栨椂锛屽繀闇€瑕佽緭鍏ユ姌鎵ｇ巼锛屽鍏姌锛屽氨鏄?,8
        public CashRebate(string moneyRebate)
        {
            //鐣岄潰鍚戠被浼犲€?/span>
            this.moneyRebate = double.Parse(moneyRebate);
        }
        public override double acceptCash(double money)
        {
            return money * moneyRebate;
        }
    }

View Code

//杩斿埄鏀惰垂
    class CashReturn:CashSuper
    {
        private double moneyCondition = 0.0d;
        private double moneyReturn = 0.0d;
        //鍒濆鍖栨椂蹇呴』瑕佽緭鍏ヨ繑鍒╂潯浠跺拰杩斿埄鍊硷紝姣斿婊?00杩?00
        //鍒檓oneyCondition涓?00,moneyReturn涓?00
        public CashReturn(string moneyCondition, string moneyReturn)
        {
            this.moneyCondition =double.Parse(moneyCondition);
            this.moneyReturn = double.Parse(moneyReturn);
        }

        public override double acceptCash(double money)
        {
            double result = money;
            //鑻ュぇ浜庤繑鍒╂潯浠讹紝鍒欓渶瑕佸噺鍘昏繑鍒╁€?/span>
            if (money >= moneyCondition)
            {
                result = money - Math.Floor(money / moneyCondition) * moneyReturn;
            }
            return result;
        }
    }

View Code

//鐜伴噾鏀跺彇鐖剁被
    abstract class CashSuper
    {
        //鎶借薄鏂规硶:鏀跺彇鐜伴噾锛屽弬鏁颁负鍘熶环锛岃繑鍥炰负褰撳墠浠?/span>
        public abstract double acceptCash(double money);
    }

View Code

銆€銆€鍔犲叆鐨勭瓥鐣ユā寮忥紙杩欓噷鍙互寮冪敤宸ュ巶妯″紡浜嗭級

 1 namespace ExtendDiscountOfStrategyPattern
 2 {
 3     class CashContext
 4     {
 5         //澹版槑涓€涓幇閲戞敹璐圭埗绫诲璞?/span>
 6         private CashSuper cs;
 7 
 8         //璁剧疆绛栫暐琛屼负,鍙傛暟涓哄叿浣撶殑鐜伴噾鏀惰垂瀛愮被(姝ｅ父,鎵撴姌鎴栬繑鍒?
 9         public void setBehavior(CashSuper csuper)
10         {
11             this.cs = csuper;
12         }
13 
14         //寰楀埌鐜伴噾淇冮攢璁＄畻缁撴灉锛堝埄鐢ㄤ簡澶氭€佹満鍒讹紝涓嶅悓鐨勭瓥鐣ヨ涓哄鑷翠笉鍚岀殑缁撴灉)
15         public double GetResult(double money)
16         {
17             return cs.acceptCash(money);
18         }
19     }
20 }

銆€銆€浣嗘槸绋嬪簭杩樻槸灏戜笉浜唖witch...case璇彞锛?/p>

銆€銆€鏍稿績浠ｇ爜(v1.3)

 1 //澹版槑涓€涓猟ouble鍙橀噺total鏉ヨ绠楁€昏
 2         double total = 0.0d;
 3         private void btnConfirm_Click(object sender, EventArgs e)
 4         {
 5             //澹版槑涓€涓猟ouble鍙橀噺totalPrices
 6             double totalPrices = 0d;
 7            //绛栫暐妯″紡
 8             CashContext cc = new CashContext();
 9             switch (cbxType.SelectedItem.ToString())
10             {
11                 case "姝ｅ父娑堣垂":
12                     cc.setBehavior(new CashNormal());
13                     break;
14                 case "婊?00杩?00":
15                     cc.setBehavior(new CashReturn("300", "100"));
16                     break;
17                 case "鎵?鎶?/span>":
18                     cc.setBehavior(new CashRebate("0.8"));
19                     break;
20                 case "鎵?鎶?/span>":
21                     cc.setBehavior(new CashRebate("0.7"));
22                     break;
23                 case "鎵?鎶?/span>":
24                     cc.setBehavior(new CashRebate("0.5"));
25                     break;
26             }
27             totalPrices = cc.GetResult(Convert.ToDouble(txtPrice.Text) * Convert.ToDouble(txtNum.Text));
28             //灏嗘瘡涓晢鍝佸悎璁¤鍏ユ€昏
29             total = total + totalPrices;
30             //鍦ㄥ垪琛ㄦ涓樉绀轰俊鎭?/span>
31             lbxList.Items.Add("鍗曚环:" + txtPrice.Text + "  鏁伴噺:" + txtNum.Text + "  鍚堣:" + totalPrices.ToString());
32             //鍦╨blTotalShow鏍囩涓婃樉绀烘€昏鏁?/span>
33             lblTotalShow.Text = total.ToString();
34         }

 

銆€銆€鏈€鍒濈殑绛栫暐妯″紡鏄湁缂虹偣鐨勶紝瀹㈡埛绔繀椤荤煡閬撴墍鏈夌殑绛栫暐绫伙紝骞惰嚜琛屽喅瀹氫娇鐢ㄥ摢涓€涓瓥鐣ョ被銆傝繖灏辨剰鍛崇潃瀹㈡埛绔繀椤荤悊瑙ｈ繖浜涚畻娉曠殑鍖哄埆锛屼互渚块€傛椂閫夋嫨鎭板綋鐨勭畻娉曠被銆傛崲瑷€涔嬶紝绛栫暐妯″紡鍙€傜敤浜庡鎴?/strong>
绔煡閬撴墍鏈夌殑绠楁硶鎴栬涓虹殑鎯呭喌鏈€鍒濈殑绛栫暐妯″紡鏄湁缂虹偣鐨勶紝瀹㈡埛绔繀椤荤煡閬撴墍鏈夌殑绛栫暐绫伙紝骞惰嚜琛屽喅瀹氫娇鐢ㄥ摢涓€涓瓥鐣ョ被銆傝繖灏辨剰鍛崇潃瀹㈡埛绔繀椤荤悊瑙ｈ繖浜涚畻娉曠殑鍖哄埆锛屼互渚块€傛椂閫夋嫨鎭板綋鐨勭畻娉曠被銆傛崲瑷€涔嬶紝绛栫暐妯″紡鍙€傜敤浜庡鎴风鐭ラ亾鎵€鏈夌殑绠楁硶鎴栬涓虹殑鎯呭喌銆?/strong>

 

銆€銆€鍘绘帀switch...case璇彞锛侊紒锛?/strong>——锛堟湰妗堜緥閲囩敤绠€鍗曠殑.net鎶€鏈細鍙嶅皠锛?/p>

銆€銆€

銆€銆€鍏抽敭鐨勬搷浣滀唬鐮佷负锛?strong>Assembly.Load(" 绋嬪簭闆嗗悕绉?).CreateInstance(" 鍚嶇О绌洪棿.绫诲悕绉?)锛?/strong>

 

銆€銆€

 

銆€銆€

銆€銆€瀹㈡埛绔唬鐮?v1.4)

 

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Threading.Tasks;
  9 using System.Windows.Forms;
 10 //add
 11 using CCWin;
 12 using System.Data.SqlClient;
 13 
 14 namespace ExtendDiscountOfStrategyPatternWithReflection
 15 {
 16      using System.Reflection;
 17 
 18     public partial class frmMain :Skin_Metro
 19     {
 20 
 21         DataSet ds;             //鐢ㄤ簬瀛樻斁閰嶇疆鏂囦欢淇℃伅
 22 
 23         public frmMain()
 24         {
 25             InitializeComponent();
 26         }
 27         
 28         //澹版槑涓€涓猟ouble鍙橀噺total鏉ヨ绠楁€昏
 29         double total = 0.0d;
 30         private void btnConfirm_Click(object sender, EventArgs e)
 31         {
 32             //澹版槑涓€涓猟ouble鍙橀噺totalPrices
 33             double totalPrices = 0d;
 34            //绛栫暐妯″紡
 35             CashContext cc = new CashContext();
 36             //鏍规嵁鐢ㄦ埛鐨勯€夐」锛屾煡璇㈢敤鎴烽€夋嫨椤圭殑鐩稿叧琛?/span>
 37             DataRow dr = ((DataRow[])ds.Tables[0].Select("name=鈥?/span>" + cbxType.SelectedItem.ToString() + "鈥?/span>"))[0];
 38             //澹版槑涓€涓弬鏁扮殑瀵硅薄鏁扮粍
 39             object[] args = null;
 40             //鑻ユ湁鍙傛暟锛屽垯灏嗗叾鍒嗗壊鎴愬瓧绗︿覆鏁扮粍锛岀敤浜庡疄渚嬪寲鏃舵墍鐢ㄧ殑鍙傛暟
 41             if (dr["para"].ToString() != "")
 42             {
 43                 args = dr["para"].ToString().Split(鈥?/span>,鈥?/span>);
 44             }
 45             //閫氳繃鍙嶅皠瀹炰緥鍖栧嚭鐩稿簲鐨勭畻娉曞璞?/span>
 46             cc.setBehavior((CashSuper)Assembly.Load("ExtendDiscountOfStrategyPatternWithReflection").
 47                 CreateInstance("ExtendDiscountOfStrategyPatternWithReflection." + dr["class"].ToString(), false,
 48                 BindingFlags.Default, null, args, null, null));
 49 
 50             totalPrices = cc.GetResult(Convert.ToDouble(txtPrice.Text) * Convert.ToDouble(txtNum.Text));
 51             //灏嗘瘡涓晢鍝佸悎璁¤鍏ユ€昏
 52             total = total + totalPrices;
 53             //鍦ㄥ垪琛ㄦ涓樉绀轰俊鎭?/span>
 54             lbxList.Items.Add("鍗曚环:" + txtPrice.Text + "  鏁伴噺:" + txtNum.Text + "  鍚堣:" + totalPrices.ToString());
 55             //鍦╨blTotalShow鏍囩涓婃樉绀烘€昏鏁?/span>
 56             lblTotalShow.Text = total.ToString();
 57         }
 58 
 59         private void btnReset_Click(object sender, EventArgs e)
 60         {
 61             total = 0.0;
 62             txtPrice.Text = "";
 63             txtNum.Text = "";
 64             lblTotalShow.Text = "";
 65             lbxList.Items.Clear();
 66             cbxType.SelectedIndex = 0;
 67         }
 68 
 69         private void txtNum_KeyPress(object sender, KeyPressEventArgs e)
 70         {
 71             //鏁板瓧0~9鎵€瀵瑰簲鐨刱eychar涓?8~57
 72             e.Handled = true;
 73             //杈撳叆0-9
 74             if ((e.KeyChar >= 47 && e.KeyChar <= 58) || e.KeyChar == 8)
 75             {
 76                 e.Handled = false;
 77             } 
 78         }
 79 
 80         private void txtPrice_KeyPress(object sender, KeyPressEventArgs e)
 81         {
 82             //鏁板瓧0~9鎵€瀵瑰簲鐨刱eychar涓?8~57
 83             e.Handled = true;
 84             //杈撳叆0-9
 85             if ((e.KeyChar >= 47 && e.KeyChar <= 58) || (e.KeyChar == 8 || e.KeyChar==46))
 86             {
 87                 e.Handled = false;
 88             } 
 89         }
 90 
 91         private void frmMain_Load(object sender, EventArgs e)
 92         {
 93             //璇诲彇閰嶇疆鏂囦欢
 94             ds = new DataSet();
 95             ds.ReadXml(Application.StartupPath + "\CashAcceptType.xml");
 96             //灏嗚鍙栧埌鐨勮褰曠粦瀹氬埌涓嬫媺鍒楄〃妗嗕腑
 97             foreach(DataRowView dr in ds.Tables[0].DefaultView)
 98             {
 99                 cbxType.Items.Add(dr["name"].ToString());
100             }
101 
102             //瑕佷笅鎷夐€夋嫨妗嗗湪鍔犺浇鐨勬椂鍊欙紝灏遍€夋嫨绱㈠紩涓?鐨勫厓绱?姝ｅ父娑堣垂"
103             cbxType.SelectedIndex = 0;
104         }
105     }
106 }

銆€銆€閫氳繃绋嬪簭鍘昏XML鐨勯厤缃枃浠讹紝鏉ョ敓鎴愯繖涓笅鎷夊垪琛ㄦ锛岀劧鍚庡啀鏍规嵁鐢ㄦ埛鐨勯€夋嫨锛岄€氳繃鍙嶅皠瀹炴椂鐨勫疄渚嬪寲鍑虹浉搴旂殑绠楁硶瀵硅薄锛屾渶缁堝埄鐢ㄧ瓥鐣ユā寮忚绠楁渶缁堢殑缁撴灉銆?/strong>

銆€銆€XML鏂囦欢——CashAcceptType.xml浠ｇ爜濡備笅

銆€銆€

 1 <?xml version="1.0" encoding="utf-8" ?>
 2 <CashAcceptType>
 3   <type>
 4     <name>姝ｅ父娑堣垂</name>
 5     <class>CashNormal</class>
 6     <para></para>
 7   </type>
 8   <type>
 9     <name>婊?00杩?00</name>
10     <class>CashReturn</class>
11     <para>300,100</para>
12   </type>
13   <type>
14     <name>婊?00杩?0</name>
15     <class>CashReturn</class>
16     <para>200,50</para>
17   </type>
18   <type>
19     <name>鎵?鎶?span style="color: #0000ff;"></name>
20     <class>CashRebate</class>
21     <para>0.8</para>
22   </type>
23   <type>
24     <name>鎵?鎶?span style="color: #0000ff;"></name>
25     <class>CashRebate</class>
26     <para>0.7</para>
27   </type>
28   <type>
29     <name>鎵?鎶?span style="color: #0000ff;"></name>
30     <class>CashRebate</class>
31     <para>0.5</para>
32   </type>
33 </CashAcceptType>

銆€銆€鐜板湪鏃犺闇€姹傛槸浠€涔堬紝鐢ㄧ幇鍦ㄧ殑绋嬪簭锛屽彧闇€瑕佹敼鏀筙ML鏂囦欢灏卞叏閮ㄦ憜骞充簡銆傛瘮濡傜幇鍦ㄨ€佹澘瑙夊緱鐜板湪婊?00閫?00澶浜嗭紝瑕佹敼鎴愰€?0锛屾垜鍙渶瑕佸幓XML鏂囦欢閲屾敼灏辫浜嗐€?/p>

娉細濡傝娣诲姞鏂扮殑绠楁硶锛岄偅涔堣绠楁硶绫荤户鎵緾ashSuper,鍐嶅幓鏀逛竴涓媂ML鏂囦欢灏卞彲浠ヤ簡銆?/p>