上回发表格视图状态ASP.Net问题 [英] ASP.Net viewstate questions on form postbacks
问题描述
让我们假设我有一个非常简单的形式，一个提交按钮和一个下拉列表。当我改变列表项，点击提交，在回传处理什么阶段不视图状态反映我改变列表条目？
Let's assume I have a very simple form, with a submit button and a dropdown list. When I change the list entry and hit submit, at what stage in the postback processing does the viewstate reflect my changed list entry?
据O'Reilly的学习ASP.Net 3.5，有两个负载服用（第266页上的图对于那些复印件）后，表单验证，另外前place--之一。
According to O'Reilly's Learning ASP.Net 3.5, there are two loads taking place-- one before form validation and another after (diagram on page 266 for those with a copy).
根据在第一负载级视图状态被装入该图中，验证之前。我以为我改变了下拉在这一点上体现？
According to the diagram the viewstate is loaded during the first load stage, before the validation. I assume my changed dropdown is reflected at this point?
此外，根据该图中，发布的数据被处理两次，之前和验证之后。谁能阐述多一点这一点，并在每个点什么形式处理发生？
Also, according to the diagram, posted data is processed twice, both before and after validation. Could anyone elaborate a little more on this, and what form processing takes place at each point?
感谢您的帮助。这是一个有点飘渺，所发生的时候，我试图把它清除掉一点。
Thanks for the help. It's a little misty, what takes place when and I'm trying to clear it up a bit.
推荐答案
该视图状态页面初始化之后，但在页面加载之前加载。验证发生的事件只是之前引起验证按钮触发。
The viewstate is loaded after page initialization but before page load. Validation takes place just before the event triggers for the button that caused the validation.
- ASP.NET Page Life Cycle Overview
- Understanding ASP.NET View State
- ASP.NET Validation in Depth
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