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Is it possible for someone to steal my source code for a ASP.NET web page?

I have a simple question in which I couldn't find an exact answer to, that question being:If I created an ASP.NET webpage, is it possible for someone to steal my C# source code?And if so, how can I protect my webpage's source code from being stolen/dumped/reverse engineered?
Please if you do know anything about this, as many replies as possible would be greatly appreciated! Thank you guys so very much, even if you just give me an idea on this topic! :)

Are you talking about a corporate user or a regular user?
Someone accessing your website from a web browser, like a standard user can not access your aspx/cs server side code. However if you are talking about a corporate user, if they browse to your web server and have access to your inetpub\wwwroot directory (or wherever your source resides) they have full read or maybe even write access. It all depends on the type of user, and the user security system in place for your domain, whether the person trying to get in is part of your domain and has proper privileges on your server. Also some client side scripts are exposed to user's as well.
So as far as server side scripts, users not part of your domain, and stringent security settings on your web server, are all factors contributing. But I think you mean in the context of a user just trying to access code from the web browser without any additional permissions. Which in this case would be no.

Not a complete answer but your C# code will be better protected if you use a Web Application rather than a Web Site. Your C# code will be compiled so even with an FTP access (or a direct access to the production server, if you suspect an inside threat), one won't be able to download your .cs files. Of course, one can download .dll and reverse engineer but that's something.
Read more about Web Apps vs Web Sites here : http://msdn.microsoft.com/en-us/library/dd547590.aspx

To the best of my knowledge there is not a way for someone to steal your asp code unless you allow them to see the file itself. If you view source you will see that the majority of the asp code has been changed either to html or javascript.

If I created an ASP.NET webpage, is it possible for someone to steal my C# source code?
Yes it is, there just to many ways how this can happen, vulnerability in the hosting environment, IIS exploit, your code allowing to download things etc. Just accept that your libraries (I assume they are compiled by the time you deploy) will be downloaded and protect them accordingly.
How can I protect my webpage's source code from being stolen/dumped/reverse engineered?
You cannot have an ultimate protection, but you may make life complicated for the person trying to reverse engineer it. Probably the most effective solution is to use code obfuscation. You may also want to read more general documentation on this topic, such as Design Guidelines for Secure Web Applications.

Need direction for getting started with a business profile site

I am building a new website, which you can see at http://www.kristalcapljina.99k.org.
While I have some web design experience, I need help in knowing what I should research to add some specific functionality to the site.
The first bit I want to add is an area where business owners can list their business' information, such as the address or contact information. They should also be able to login later to change the information. I assume this will need some sort of database, but don't know where to begin looking.
Second, I wish to add a map that highlights the locations of these businesses.
Any help direction you can give me to get started would be most appreciated.

You want to embed a Google Map onto your site, using the Google Maps API.

Good Library for Creating E-mail Templates with Merge Ability

I'm looking for a really good library/component/framework for creating e-mail templates for my web application.
We send out a number of e-mails on a regular basis:
Activate Your Account
Welcome
Thanks for Your Order
Etc.
I'd like to give the non-technical administrators of my web app a way to:
See the current e-mail template (HTML, WYSIWYG)
Make some minor modifications to copy, colors, etc.
Preview, Test, Save, and "deploy" a new version of the e-mail template.
The tool needs to support "merge" fields. For an example, see MailChimp.com. They allow users to create e-mail templates and then specify any number of fields like this:
|FIELD1|
|FIELD2|
Then, when sending an e-mail, the developer passes-in the appropriate info for each field.
An example:
Hi *|FIRSTNAME|*,
Thanks for signing up. You rule!
Best regards,
MyWebSite.com
Does anyone know of a tool like this that can plug into my ASP.NET / C# web app? I assume someone out their wrote a library/component/something that I can license.
Thanks!

Try this one. It's free and open source:
http://mailsystem.codeplex.com/
It includes some classes specifically designed for mail merging
What's nice is that you can use its mail merging capabilities and still use system.net.mail for sending the email to avoid breaking your code.

Here is another option.
http://ntemplates.codeplex.com/

Flash plugin that allows users to create a PDF or image file

I am developing a ASP.NET web site where users will need to be able to create their own business cards. So, I'm looking for a tool (most likely Flash) that I can easily integrate into a web site and lets users add text and custom images to their cards and then create an image and/or PDF from their work.
is there a plugin that does this?

If you write your own business-card creator in flash, you can save the view to PDF files using AlivePDF.

You could have a look at this: http://www.shirtnetwork.com/en
It is less of a plugin and much more of a fully customizable software solution, with an administration backend, PDF export, billing etc. . I worked on the client and I must say it is a very mature and potent software and probably can do about anything you want, when it comes to customizing products. I don't know, whether you like the pricing model, OTOH to my knowledge, they also provide provision-free licences.
I don't know, whether there are reasonbly expensive components available, that do this for you, because you can get a load of money out of this business, so I wouldn't expect anyone to give them away for free.
greetz
back2dos

Asp.net webparts or portlet like functionality

What is the best way to let other parties use your website as their own content using their own style ?
We have build a small website for a customer, asp.net, .net framework 3.0. Now the customer wants other parties to be aple to use our website in their own websites while maintaining the styling of the costumers website.
I have done nothing like this before and don't even know what to google, so any help is appriciated.
I know you can do this with sharepoint, but to use sharepoint for such a small site seems like a lot of overkill
it sounds that portlets is a good name for what they want. but googling portlets draws me in the world of java and doesn't give me a lot of info on what the other parties would have to do to make it work.
a simple Iframe would probably take me a long way, but how can you get the styling done within an Iframe
webparts also sound interesting , but they seem more for in project sharing then letting people use them in their own site.
It is a small website and the logic and backend communication is pretty good contained, so a complete rework of the frond-end is not a big problem.
Once again, any help is appreciated !

Omar Al Zabir has a book on how to build a Portal in ASP.NET- here is a link to his Website.
You might want to look at his Dropthings portal.

Yes, portlets are pretty much Java-only, despite any talk of standards.
If you can encapsulate your pages in web parts or user controls, that would make it easy to style them, and even to parameterize them: a web part can be configured.

You can use Kalitte Dynamic Dashboards for creating professional dashboards and portlets.
More information can be found at www.dynamicdashboards.net