《WF in 24 Hours》读书笔记 - Hour 2(2) - Workflow：创建分支和传递参数

1. 修改workflow1.xaml，添加Flowchart，添加Flowdesicion，添加CodeActivity2，并且名字改为下图所示：

2. CodeActivity1和2的代码如下：

     public sealed class CodeActivity1 : CodeActivity
     {
         // Define an activity input argument of type string
         public InArgument<string> Text { get; set; }
 
         // If your activity returns a value, derive from CodeActivity<TResult>
         // and return the value from the Execute method.
         protected override void Execute(CodeActivityContext context)
         {
             Console.WriteLine("executed in the left branch");
         }
 }
 
     public sealed class CodeActivity2 : CodeActivity
     {
         // Define an activity input argument of type string
         public InArgument<string> Text { get; set; }
 
         // If your activity returns a value, derive from CodeActivity<TResult>
         // and return the value from the Execute method.
         protected override void Execute(CodeActivityContext context)
         {
             Console.WriteLine("executed in the right branch");
         }
     }

3. 修改program.cs

         static void Main(string[] args)
         {
             // Add the parameters via a dictionary object
             Dictionary<string, object> parameters = new Dictionary<string, object>();
             parameters.Add("Amount", );
 
             Activity workflow1 = new Workflow1();
             WorkflowInvoker.Invoke(workflow1, parameters);
 
             // Pause the display
             Console.WriteLine("Press enter to continue.");
             Console.Read();
         }

4. 打开Workflow1.xaml文件，设置Flowdecision的condition为Amount < 1000

5. 还是在workflow1.xaml中添加Argument

6. 运行。结果如下：

7. 修改program.cs的Amount为900，运行。结果如下：