Change the Theme from MasterPage

Question

Hi to all,

I have a MasterPage that has two image buttons , and two content pages, What i want is that when an Image button is clicked ----> the theme changes.

I know that MasterPage do not have a "OnPreInit" function and the theme has to be changed inside the "OnPreInit" function...

so is there any workaround for this problem ???

Thanks in advance.

Baher

Answer 1

The following is a process used in the Book "Beginning ASP.Net 4 in C# and VB.Net by Imar Spaanjaars". Note that in the book he uses a DropDownList to change the Theme, but I believe the same can be done with an Image button:

1. In the MasterPage add code to the Image Button click event to save the theme name into a cookie. Once the cookie is set you redirect back to the current page.
2. You will need to create a custom BasePage that inherits from the Page class and have all your pages inherit from this BasePage. It is in this BasePage that you will override the Page_PreInit to load the selected theme based on the value of the cookie. The redirect is to run the code in the Page_PreInit to have the Theme change.

I know this might not be the best option, because you will need to change all your pages to inherit from your new BasePage instead of Page.

Answer 2

Well I found the Solution for that which is i captured the Image Button clicked and then changed the theme

really easy