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BOOK: Beginning ASP.NET 4 : in C# and VB
This is the forum to discuss the Wrox book Beginning ASP.NET 4: in C# and VB by Imar Spaanjaars; ISBN: 9780470502211
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Old April 5th, 2012, 07:17 PM
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Question Switch at runtime between Child master.pages

Hi

I began reading this amazing book and I'm vary pleased with it.

I just need help with something...

I have created a Parent master.page and 2 Child master.pages that inherit from the Parent.

Each Child master.page is used to load a completely different StyleTheme to my website.

Inside my Parent master.page I have inserted a DropDownList control with the names of the 2 themes.

Now what I want to know is what code in C# can help me switch at runtime between the 2 child master.pages whenever a user clicks on the dropdownlist.

Thanks in advance
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Old April 6th, 2012, 03:16 AM
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Hi there,

Take a look here: http://stackoverflow.com/questions/3...es-master-page

BTW: make sure both master pages have the same set of ContentPlaceholder controls.

Cheers,

Imar
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Old April 7th, 2012, 07:16 AM
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I have been building my website in accordance with the teachings of the book.

The styles to my website are set from the ( App_Themes ) folder. Inside the ( App_Themes ) folder I have 2 themes – Light and Dark.

I also have 1 Parent Master.page and 2 Child master.pages and each child master.page loads a different style to the website.

I don’t know if I’m thinking right here - but is it possible to change programmatically the theme from the ( App_Themes ) and Child master.page with single DropDownList or is it only possible to change one at a time???

Thanks in advance.
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Old April 7th, 2012, 07:42 AM
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Yes, you can do it at once as you need to switch both themes and the master page in the PreInit method....

Cheers,

Imar
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Old April 7th, 2012, 11:00 AM
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Thanks for your reply mr Imar

If I may ask - Back in chapter 6 where you first start to explaine how to switch between themes, you insert some code logic inside ( Frontend.master.cs ). In your example you had only 1 Master.page.

Now in my case where I have 1 Parent and 2 children - Am I right to assume that code will go inside the parent master.page code behind and not inside one of the child master.pages.

Thanks in advance
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Old April 7th, 2012, 11:26 AM
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Yes, that way you only have to write the code once.

Then in the BasePage you can apply the selected master page as well as the selected theme....

Imar
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Old April 7th, 2012, 01:27 PM
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Thanks again for clarifying that Mr. Imar
I'm sorry to keep bothering you with this it's just that I keep have some trouble getting it to work.

So if it’s ok could you please clarify one more thing to me?

I have created 4 aspx.pages that inherit from the darktheme Child master
• Home
• About
• Work
• Contact

Is it possible to switch the inheritance of these aspx.pages from ( Dark child master.page ) to ( Light child master.page ) or must I create 4 additional aspx.pages that inherit from the light master.page?

Thanks once again
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Old April 7th, 2012, 01:40 PM
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May I ask a question in return? Why don't you just try it out? The best way to learn is to experiment. The article I linked to showed you exactly how to switch master pages at run-time and I have provided other information in this thread of stuff you need to be aware off.

So, try it out, and you'll see that it works.

Imar
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Old April 7th, 2012, 01:59 PM
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I'm new to this Asp.net and it goes without saying that I will need to experiment on this as I have for hours now :)

I just thought that I might be a good idea to ask and make sure that I'm not thinking wrong while beliving that my computer is messing with me.

Thanks
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Old April 7th, 2012, 02:14 PM
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In that case, rather than posting questions like "Can it be done?", what about posting questions like: "I have been experimenting with this and that in order to accomplish such and so. However, when I try such and so, I run into error X. Here's the relevant code I am trying to get to work, as well as the error message I am getting"

That way, it's way easier to help you figure this out ;-)

Cheers,

Imar
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