类名

System.Activities.Statements.Sequence

文件

System.Activities.dll

结构说明

继承 NativeActivity

是一个 sealed类

定义了[Collection<Activity> Activities 属性] 与[Collection<Variable> Variables 属性]

override 了 [CacheMetadata方法] 与 [Execute方法]

功能说明

1.[Activities]集合,可以存放Activity

2.[Activities]集合中的Activity按顺序从上向下执行

3.[Variables]集合用于存放变最

WriteLine myWorkfloe = new WriteLine() { Text = new InArgument<string>("wxxinter") };

WorkflowInvoker.Invoke(myWorkfloe);

Sequence wxwinterWorkflow = new Sequence();

WriteLine writeLine1 = new WriteLine() { Text = new InArgument<string>("a") };

WriteLine writeLine2 = new WriteLine() { Text = new InArgument<string>("b") };

WriteLine writeLine3 = new WriteLine() { Text = new InArgument<string>("c") };

wxwinterWorkflow.Activities.Add(writeLine1);

wxwinterWorkflow.Activities.Add(writeLine2);

wxwinterWorkflow.Activities.Add(writeLine3);

WorkflowInvoker.Invoke(wxwinterWorkflow);

执行结果

类名

System.Activities.CodeActivity

文件

System.Activities.dll

结构说明

继承 Activity

是一个 abstract 类

提供了[abstract void Execute(CodeActivityContext context)]方法

功能说明

一个抽向类,继承该类后,需要override该类的Execute方法,用于编写自定义的功能代码

public sealed class myActivity : CodeActivity

{

protected override void Execute(CodeActivityContext context)

{

System.Console.Write("请输入内容:");

string inputString = System.Console.ReadLine();

string outputString = string.Format("你输入的是:{0}", inputString);

System.Console.WriteLine(outputString);

}