Question

I understand the page lifecycle and how I need to add the dynamic controls on page_init if I want to take advantage of viewstate. And I already have read a lot of topics regarding the issue but it was not very useful.

I have to work with the solution where I have a set of user controls, that inherit one interface and then I add/delete them dynamically to a literal control. I can’t load them at once in a page_init because later I have to delete/add them based on user actions. These controls contains a button, and its post back event handler is fired only when I generate this user control at page_init or page_load methods.

So I have to somehow reinitialise/restart lifecycle of the page after needed processing in some Button_Click, (where I update the controls list) events handlers. That is not possible, as I have found. Redirecting to the same page is not a solution, because in the case I will lost my whole viewstate.

So I am stuck, could you please help me with the solution?

Answer 1

It sounds like you could benefit from creating a CompositeControl.

I recently answered a similar question based on dynamically creating textboxes in which I provided a fairly detailed example.

See: Dynamically add a new text box on button click

Hope this helps.