If I have a Page which has a master page and a user control, what will be the sequence of Load, init, etc.? On which event can you add controls, master page, theme to the page earliest? What is the practical need to know sequences of event in ASP. NET Page life cycle? Let us do a quick experiment and let these three Page, master, user control tell the sequence.
NET web project. Add two master pages Old. Add a label inside New. Add a page named Home. Put a panel inside it with ID " pnlMain ". Drop a label on Page named " lblHead ".
Add an user Control named " Control. Put a label inside it which identifies the control on the page, for example : "Hi from User Control! Add a skin file named " MyTheme ". Do a simple styling of Label control there by adding the following line of code: ASP.
Copy Code. Sambhav Yadav - Sam D Silva. Software Developer Senior. First Prev Next Errata zombiejojo Oct Now I think I had it all wrong. Instead it seems that the Viewstate never changes on client side, and all the client changes are in the postback data such that the next request the server loads viewstate, loads postback, and provides a new updated viewstate in the next response?
The best time to add these controls is during the initialization stage of the page life cycle, which occurs before the load view state stage. That is, we want to have the control hierarchy complete before the load view state stage arrives.
For this reason, it is best to create an event handler for the Page class's Init event in your code-behind class, and add your dynamic controls there. Here's a few images from Understanding ASP. No, the point of the ViewState is simply to preserve the state of the page since the last "Save View State" page event, i.
So how is the new state of the page being preserved, i. Those dropdown selections and text box values are captured in Post Back data. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?
Collectives on Stack Overflow. Learn more. Viewstate vs Postback Ask Question. Asked 11 years, 5 months ago. Active 2 years, 3 months ago. Viewed 4k times. I have gone over the documentation on page and control lifecycles a few times and I am just now realizing that there was a different step for handling postback data this step didn't appear in a lot of documentation : 1 So postback data, the values user's type into the fields, is applied after the OnLoad event, and Viewstate data is applied just before the OnLoad event?
Improve this question. Add a comment. So I actually ended up discovering that the list of entities I was binding to was not in the same order as the controls in ViewState!
Params to find the keys that are relevant to your control hierarchy, and see if they match the order of your List. That solved my issue. Kudos to nunespascal! In short, I am dynamically generating all but one tab in an AjaxToolkit tab control, and then populating that with a couple layers deep of placeholders and regular controls textboxes, dropdownlists, etc , so that's why it's complicated to get the order of everything correct.
The control tree into which viewstate is being loaded. Here's additional info: I'm running. NET 4. The server is not part of a web farm or garden, tho that should be irrevelant The user control does render controls dynamically I have applied all the latest service packs.
Asked By: krisdyson. Answered By: nunespascal. Answered By: Hooman. Answered By: Mark Macneil Bikeio. Answered By: krisdyson. Answered By: David.
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