WorkFlow之顺序工作流学习

一、打开vs2008----添加新项目---顺序工作流控制台应用程序

二、在工具箱中找到IfElse。将它拖入到我们的设计界面上。

 

三、选择“ifElseBranchActivity1”---“属性”---选择Condition下拉列表中的“代码条件”，再输入处理事件的名称“isok”。回车，VS会自动的生成处理代码。

        private string str;
        public string Str
        {
            get { return str; }
            set { str = value; }
        }
        private void isok(object sender, ConditionalEventArgs e)
        {
            if (Str == "aa")
                e.Result = true;
            else
                e.Result = false;
        }

四、创建分支的处理程序。现在我们返回设计界面。向左右的分支拖入Code控件。

选择“codeActivity1”--属性ExecuteCode中输入“istrue”，回车，

        private void istrue(object sender, EventArgs e)
        {
            Console.WriteLine("is ok!");
        }

 

选择“codeActivity2”--属性ExecuteCode中输入“isfalse”，回车，

        private void isfalse(object sender, EventArgs e)
        {
            Console.WriteLine("is not ok!");
        }

 

五、至此。我们的workflow代码编写完毕。现在我们需要稍稍的修改下我们的Program.cs文件。打开Program.cs文件。找到

WorkflowInstance instance = workflowRuntime.CreateWorkflow(typeof...

在其上面插入以下代码用作传递参数到workflow中。

 

 

using(WorkflowRuntime workflowRuntime = new WorkflowRuntime())
            {
                AutoResetEvent waitHandle = new AutoResetEvent(false);
                workflowRuntime.WorkflowCompleted += delegate(object sender, WorkflowCompletedEventArgs e) {waitHandle.Set();};
                workflowRuntime.WorkflowTerminated += delegate(object sender, WorkflowTerminatedEventArgs e)
                {
                    Console.WriteLine(e.Exception.Message);
                    waitHandle.Set();
                };
                Console.WriteLine("enter a word:");
                string str = Console.ReadLine();

                Dictionary<string, object> dic = new Dictionary<string, object>();
                dic.Add("Str", str);
                WorkflowInstance instance = workflowRuntime.CreateWorkflow(typeof(WorkflowConsoleTest1.Workflow1), dic);
                instance.Start();

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