WF4状态机+书签 [英] WF4 State machine + bookmarks

问题描述

I 一直在寻找WF4（或更高）的状态机的简历好简单样品（从我已经阅读文档可能书签）。 我想知道怎样才能实现一个状态机，它能够恢复在里面WF任何给定的状态。 因为我不知道WF什么，我希望看到一个简单的状态机，我可以恢复exceution在国家这是最后一次，它也将是很好看怎么力一WF跳到一个国家，再从那里开始（如果可能）。 Thansk了很多。

Ive been searching a good simple sample for WF4 (or higher) state machine with resume (possibly BookMarks from the docs Ive read). I would like to see how can I implement a state machine that is able to resume at any given state inside a WF. Since I don't know anything about WF, I would like to see a simple state machine where I can resume the exceution at the state it was last time and it would also be nice to see how to 'force' a WF to jump to a state and re-start from there (if possible). Thansk a lot.

推荐答案

您需要实现这样一个自定义活动：

You need implement a custom activity like this:

public sealed class WaitForBookmark : NativeActivity
{
    [RequiredArgument]
    public InArgument<String> BookmarkName { get; set; }

    protected override void Execute(NativeActivityContext context)
    {
        context.CreateBookmark(BookmarkName.Get(context));
    }

    protected override bool CanInduceIdle
    {
        get { return true; }
    }
}

将这个活动里面的状态。当您需要恢复每一个书签。

Put this activity inside a state. After you need to Resume each bookmark.

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