根据母版页中分配的会话动态创建控件 [英] Create Control Dynamically based on Session Assigned in Master Page

问题描述

亲爱的，我在MasterPage中有一个DropDownList，其中保存Years，并根据从MasterPage中选择的值创建会话变量.
在子控件"中，我想基于会话变量创建动态控件，我在子页面中创建了所有必需的控件，但是在保存值时问题仍然存在.

我在子页面中使用了PreRender，它提供了母版页面的准确会话值，但是我的动态控件无法保存其状态(ViewState)
我在子页面中使用了PageLoad，但是在PageLoad中，我从母版页获得了错误的会话值，

请提出任何想法，我应该在子页面中使用哪个事件以具有MasterPage会话的准确值并在子页面中具有动态控件的ViewState?

Dear All, I have a DropDownList in MasterPage which holds Years, and based on the value selected from MasterPage I am creating a session variable.
in Child Control I want to create dynamic controls based on session variables, I created all the required controls in child page but the problem persist while saving the value.

I used PreRender in Child Page which Gives the accurate Session Value from Master Page, but I dynamic control can''t save its state (ViewState)
I used PageLoad in Child Page, but in PageLoad I am getting wrong Session Value from Master Page,

any Ideas please, which event should i use in Child Page to both have the accurate value of MasterPage Session and have ViewState of Dynamic Control in Child Page?

推荐答案

"不要动态创建控件，并且如果您在Page Load或更高版本中创建控件，请不要期望它们具有状态.网上有大量的文章.我发现最简单的方法是拥有一个隐藏的控件，然后使用javascript来存储我动态创建的控件的值，或者如果我的动态控件的范围受到限制(即，没有无限多个文本框)例如)，可以一直创建它们，并根据需要隐藏/显示它们.

You can''t create controls dynamically and expect them to have state if you create them during Page Load or later. There''s tons of articles on this on the web. I find the easiest thing to do, is have a hidden control, and in that use javascript to store the values of my dynamically created controls, or if my dynamic controls are limited in scope ( i.e. there''s not an infinite number of textboxes possible, for example ), just create them all the time and just hide/show them as needed.

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