workflow - MS Workflow problem with custom activities member variable state

Question

I have a simple custom activity with a private member variable (integer).

When i put it inside a sequence activity which is inside a while activity and start iterating i have a problem:

My member variable is zeroed in each iteration even though i increment it by one every time the activity is executed.

What am i doing wrong?

Thanks,

Adi Barda

Answer 1

没有看到代码很难说，但是当您在 While 活动中工作时，您必须小心如何修改子活动的状态。While 活动产生多个执行执行上下文，并将从模板克隆您的活动（换句话说 - 您没有多次执行相同的活动，工作流会创建自定义活动的多个实例）。请参阅：http: //blogs.msdn.com/advancedworkflow/archive/2006/03/21/557121.aspx和http://msdn.microsoft.com/en-us/magazine/cc163414.aspx