工作流程式設計循序漸進 (3-3)：WhileActivity 九九乘法表完整實現

WhileActivity 巢狀迴圈實現九九乘法表完整代碼與執行結果

一、規則條件運算式設定

外層迴圈 whileActivity1：this.i < 9
內層迴圈 whileActivity2：this.j <= this.i

二、CodeActivity 邏輯撰寫

private void codeActivity1_ExecuteCode(object sender, EventArgs e) { // 外層迴圈初始化
    j = 1;
    i++;
}

private void codeActivity2_ExecuteCode(object sender, EventArgs e) { // 內層迴圈列印
    if (i == j) {
        Console.Write("{0} * {1}={2} ", i, j, i * j);
        Console.WriteLine("");
    } else {
        Console.Write("{0} * {1}={2} ", i, j, i * j);
        j++;
    }
}

private void codeActivity3_ExecuteCode(object sender, EventArgs e) { // 結束暫停
    Console.Read();
}

三、完整工作流類別代碼

using System;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

namespace WhileActivity {
    public sealed partial class Workflow1 : SequentialWorkflowActivity {
        private int i = 0;
        private int j = 1;

        public Workflow1() { InitializeComponent(); }

        private void codeActivity1_ExecuteCode(object sender, EventArgs e) { j = 1; i++; }
        private void codeActivity2_ExecuteCode(object sender, EventArgs e) {
            if (i == j) { Console.Write("{0} * {1}={2} ", i, j, i * j); Console.WriteLine(""); }
            else { Console.Write("{0} * {1}={2} ", i, j, i * j); j++; }
        }
        private void codeActivity3_ExecuteCode(object sender, EventArgs e) { Console.Read(); }
    }
}

四、執行結果