Signing a web form - options for digital signature - asp.net

I am developing web form equivalents of paper based forms.
On the paper form people get the option to sign the form with their signature.
In ASP.NET what are the options for a digital equivalent.

I can suggest some pages, if we talking for the same think.
http://msdn.microsoft.com/en-us/magazine/cc163434.aspx
http://msdn.microsoft.com/en-us/library/aa480189.aspx
http://www.microsoft.com/uk/msdn/nuggets/nugget/224/Using-CardSpace-with-ASPNET.aspx

It may be too late, but for the sake of others who are looking for the same thing as me - try JSignature JavaScript plugin. Here is the ReadMe from github. Hope it helps.

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Captcha in ASP.NET

I am developing a website where I need a captcha control and I want to develop the captcha control itself, so in the future I can change its length, type, color, and have it be easy to manage as well.
So, suggest me which technology used for to develop the capha control and how.
I am using asp.net platform with vb.net as the language.
You can try reCAPTCHA.
Check out this (free): http://www.codinghorror.com/blog/2004/10/an-aspnet-captcha-server-control.html
Or Telerik has a great Captcha product (not free).
BotDetect CAPTCHA is excellent. I just used it on a big project. http://captcha.biz/
There are lots of existing options you could use (as others have pointed out). But, if you want to roll your own, you might want to consider WPF/Silverlight. There are a lot tools in there to manipulate/transform letters and numbers that you could utilize.
You could apply a random (or several random) transformations to each letter/number of a randomly generated string of letters/numbers.

Drupal module development examples

I'm new to Drupal, but I want to create an add-on. The add-on requires some sort of multi-page form with advanced jQuery (I already looked at the jQuery module).
The add-on requires details of the current logged in user and will also communicate with an external database.
I've been looking at tutorials concerning Module creation etc. But they mostly cover creation of simple forms, where as what I want to create is more of a plugin.
Multi page forms are a total drag. Pro Drupal Development, has a very good section on this topic, and I highly recommend that book if you are doing any Drupal development.
Online I found the following article pretty useful too (though I ultimately went with my own system).
http://www.nicklewis.org/using-chaos-tools-form-wizard-build-multistep-forms-drupal-6
There's a decent example here:
http://thedrupalblog.com/creating-multipage-form-using-forms-api
To make the most out of this, you're going to want to get pretty friendly with the Form API:
http://drupal.org/node/204270
Sadly Drupal.org seems to be missing a Drupal 6.x explanation (though plenty exist for 5.x and 4.7 oddly enough).
Multi step forms are complex by nature, but there are some methods to make it easier. I recommend that you have a look at the multistep form tools offered by the Ctools module. This blog post by Nick Lewis explains how you can use it.
I think you should think twice before going with javascript/jQuery to create your forms. Javascript is a great way to improve the user interface, but it can be easily manipulated because it's client side technology. You shouldn't rely on javascript alone for things like input validation, temporary storage of form values and controlling the flow between different steps of the form.
I feel odd saying this, but I don't think you want to use the Drupal Forms API.
The Forms API provides a lot of security features (unique token, rebuilds form after submit to compare to ensure correct form is processed, etc.) and allows other modules to modify your forms, but I think a lot of those features will get in the way of your jEditable form. Multi-page forms are not that challenging using the Forms API, but jEditable elements will be.
Your module could simply add a menu item with a page callback function that puts together your jEditable form for you. That is about as close to the world of a 'normal PHP' script as Drupal will let you get.

asp.net page maker (form maker)

please introduce some form maker(page maker) for asp.net.
like Iron speed.
that enable us to generate form or user control from database tables.
thanks all.
I suggest also this one
http://www.hkvstore.com/aspnetmaker/
Try Asp.Net Dynamic Data
There are tutorial videos at the link provided.
It's quick, simple, powerful, and easy to customize once you learn how it works. (And provided you understand ASP.NET in general.
And it's free.

Spell Checker in Web Application

Currently I am developing website in asp.net.
I wanted to include spellchecker module into my code.
It may not be fare to ask like this, but I don't have enough time to do R&D on that topic, of course I did enough study but I am unable to get the exact way to implement spell checker in my application.
Can any one suggest me how to implement spell checker and where to get source code.
Thank You.
All modern browsers come with built-in spell checkers these days, and users can customise them to their own language, locale and even add new words. Don't bother trying to implement your own. If your IE6 users complain, tell them to upgrade.
op said:
It may not be fare to ask like this,
but I don't have enough time to do R&D
on that topic
and then commented:
Actually I am new to .net. Recently I
joined as a .net trainee. My trainer
wants me to develop this module.
wow, you're making great strides!
follow the links, should do what you want...
http://forums.karamasoft.com/ShowPost.aspx?PostID=3614
If you use javascript and jQuery, the spellayt plugin provides spell checking in IE browsers.
Have a look at this appliation, following the link -http://www.spellchecker.net/ If you use FCK/CK Editor or TinyMCE, it perfectly works as a plug-in there. if not, you can embed it into your application as a SpellAsYouType functionality or spell-checking in pop-up..

Any Free source code for captcha images for asp.net?

i am creating a registration form for that i want to implement the captcha image.can i get the source code or any reference.Thanking you
Your best bet is to use reCAPTCHA. It's free, widely used, and well documented. And by using it you'll be helping the project along digitizing old books.
They have code samples for asp.net HERE
Take a look at this article (first result of search string asp.net captcha).

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