[WF实例研究】HelloWord

 

语言：C#

平台：.NET 3.5

 

1:如下图，首先创建一个空项目，命名为 HelloWordControlWF。解决方案名称为WFHelloWord

 

2：重命名WorkFlow1.cs 为HelloWord.cs

3：添加一个codeActivity1

3：双击codeActivity1 添加codeActivity1_ExecuteCode 事件

4：添加依赖属性OutDependency，完整代码

 

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Linq;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

namespace HelloWordControlWF
{
    public partial class HelloWord : SequenceActivity
    {
        public HelloWord()
        {
            InitializeComponent();
        }
        public static DependencyProperty OutDependencyProperty = DependencyProperty.Register("OutDependency", typeof(string), typeof(HelloWord));

        [DescriptionAttribute("OutDependency")]
        [CategoryAttribute("OutDependency Category")]
        [BrowsableAttribute(true)]
        [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)]
        public string OutDependency
        {
            get
            {
                return ((string)(base.GetValue(HelloWord.OutDependencyProperty)));
            }
            set
            {
                base.SetValue(HelloWord.OutDependencyProperty, value);
            }
        }

        private void codeActivity1_ExecuteCode(object sender, EventArgs e)
        {
            Console.WriteLine("hello world (^_^)");
            Console.WriteLine(OutDependency);

        }
    }
}

 

5：添加一个顺序工作流控制台应用程序

6：删除WorkFlow1.cs  本项目不需要

7：对program.cs 文件进行编辑，代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Workflow.Runtime;
using System.Workflow.Runtime.Hosting;
using System.Xml;
using System.Workflow.Activities;
using System.Workflow.ComponentModel.Compiler;

namespace HelloWordConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            using(WorkflowRuntime workflowRuntime = new WorkflowRuntime())
            {
                AutoResetEvent waitHandle = new AutoResetEvent(false);
                workflowRuntime.WorkflowCompleted += delegate(object sender, WorkflowCompletedEventArgs e)
                {
                    Console.WriteLine("WorkFlow finished");
                    waitHandle.Set();
                };
                workflowRuntime.WorkflowTerminated += delegate(object sender, WorkflowTerminatedEventArgs e)
                {
                    Console.WriteLine("Running With Exception:" + e.Exception.Message);
                     waitHandle.Set();
                };

                WorkflowInstance instance = null;
                try
                {
                    string xmlPath = @"..\\..\\workflow.xml";
                    XmlReader reader = XmlReader.Create(xmlPath);
                    instance = workflowRuntime.CreateWorkflow(reader);
                    reader.Close();
                }
                catch (WorkflowValidationFailedException e)
                {
                    ValidationErrorCollection errList = e.Errors;
                    foreach (ValidationError err in errList)
                    {
                        Console.WriteLine(err.ErrorText);
                    }
                    Console.Read();
                    return;
                }
                Console.WriteLine("Ready to start Hello Word WorkFolw");
                instance.Start();

                waitHandle.WaitOne();
                Console.Read();
            }
        }
    }
}

8：添加对HelloWordControlWF的引用

9：添加一个XML文件并且重命名为workflow.xml。内容如下：

<?xml version="1.0" encoding="utf-8" ?>
<SequentialWorkflowActivity x:Name="Char" Description="HelloWord" xmlns:ns0="clr-namespace:HelloWordControlWF;Assembly=HelloWordControlWF, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow">
  <ns0:HelloWord x:Name="helloword1" OutDependency="wf is a good platform 1" />
  <ns0:HelloWord x:Name="helloword2" OutDependency="wf is a good platform 2" />
  <ns0:HelloWord x:Name="helloword3" OutDependency="wf is a good platform 3" />
  <ns0:HelloWord x:Name="helloword4" OutDependency="wf is a good platform 4" />
</SequentialWorkflowActivity>

10：编译，运行结果如下：

 

源代码下载：WFHelloWord.zip