浅析 在宿主中使用参数与实例通信

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本文用C#浅析，用中文做名称为了练习用，实际开发不允许

 

工作流代码
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Linq;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;
using System.Windows.Forms;

namespace WorkflowLibrary1
{
    public sealed partial class Workflow1 : SequentialWorkflowActivity
    {
        public Workflow1()
        {
            InitializeComponent();
        }

        //------------------------年龄属性----------------------------------
        private int 年龄_value;
        public int 年龄
        {
            set
            {
                年龄_value = value;
            }
            get
            {
                return 年龄_value;
            }
        }

        public enum 年龄状况
        {
            成年,
            未成年,
        }

        //------------------------年龄类型属性------------------------------
        private 年龄状况 年龄类型_value;
        public 年龄状况 年龄类型
        {
            set
            {
                年龄类型_value = value;
            }
            get
            {
                return 年龄类型_value;
            }
        }


        //------------------IfElse的两个分支----------------------
        private void code_t_code(object sender, EventArgs e)
        {
            //  >=18岁的
            年龄类型 = 年龄状况.成年;
            MessageBox.Show("年龄>=18的代码块,年龄:" + this.年龄.ToString());
        }

        private void code_f_code(object sender, EventArgs e)
        {
            //  <18岁的
            年龄类型 = 年龄状况.未成年;
            MessageBox.Show("年龄<18的代码块,年龄:" + this.年龄.ToString());
        }
    }
}

 

 

我用的是窗体的，textBox1为输入的年龄文本框，按钮为“测试年龄段”

 

宿主程序代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Workflow.Runtime;
using System.Workflow.Activities;

namespace WorkflowMonitorManagermentStudio
{
    public partial class Form1 : Form
    {
        private WorkflowRuntime runtime = null;

        private WorkflowInstance instance = null;

        private static AutoResetEvent WaitHandle = new AutoResetEvent(false);

        public Form1()
        {
            InitializeComponent();

            runtime = new WorkflowRuntime();

            runtime.StartRuntime();

            runtime.WorkflowCompleted += new EventHandler<WorkflowCompletedEventArgs>(runtime_WorkflowCompleted);
            runtime.WorkflowTerminated += new EventHandler<WorkflowTerminatedEventArgs>(runtime_WorkflowTerminated);
        }

        void runtime_WorkflowTerminated(object sender, WorkflowTerminatedEventArgs e)
        {
            MessageBox.Show(e.Exception.Message.ToString());
            WaitHandle.Set();
        }

        void runtime_WorkflowCompleted(object sender, WorkflowCompletedEventArgs e)
        {
            string value = e.OutputParameters["年龄类型"].ToString();
            MessageBox.Show("年龄类型:" + value.ToString());
            MessageBox.Show("年龄:" + e.OutputParameters["年龄"].ToString());
            WaitHandle.Set();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text.Trim() == "")
            {
                MessageBox.Show("请输入年龄");
                return;
            }
            else
            {
                Dictionary<string, object> 参数 = new Dictionary<string, object>();

                参数.Add("年龄", Int32.Parse(textBox1.Text.Trim()));

                instance = runtime.CreateWorkflow(typeof(WorkflowLibrary1.Workflow1), 参数);

                instance.Start();
            }
        }
    }
}

 

 

 

转载于:https://www.cnblogs.com/pj1104/archive/2009/02/03/1383208.html