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Pranab Paul's Blog - SharePoint 2007 (MOSS/WSS 3.0) Development Tips

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SharePoint 2007 (MOOS/WSS) - Custom CAPTCHA (Antispam) Field

I saw a nice post in CodeProject (http://www.codeproject.com/KB/aspnet/CaptchaImage.aspx) regarding CAPTCHA image control. I used the same code to create a Custom Field that will work like a CAPTCHA field for SharePoint. I tested it with Custom List and Blog Post suceessfully. You need to enable the session in the Web.Config file using enableSessionState="true" as it depends heavily on session. Here is how it looks like:

captcha 

Here is the screenshot of the Solution Explorer:

soexplr

You can download the WSP file and the project in a zip file from here.

Posted: Tuesday, December 09, 2008 10:48 PM by pranab
Attachment(s): CaptchaField.zip

Comments

Links (12/11/2008) « Steve Pietrek - Everything SharePoint said:

PingBack from http://stevepietrek.com/2008/12/11/links-12112008/

# December 11, 2008 9:05 PM

Michael Greth MVP SharePoint Blog said:

Dezember HotFix Update The December cumulative update for WSS V3 and MOSS 2007 WSS Download http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=960010&kbln=en-us

# January 5, 2009 6:48 AM

Michael Greth MVP SharePoint Blog said:

Dezember HotFix Update The December cumulative update for WSS V3 and MOSS 2007 WSS Download http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=960010&kbln=en-us

# January 6, 2009 5:34 AM

Mirrored Blogs said:

Dezember HotFix Update The December cumulative update for WSS V3 and MOSS 2007 WSS Download http://support

# January 6, 2009 6:34 AM

SharePointPodcast.de said:

Direkter Download: SPPD-108-2009-01-08 Veranstaltungen SharePoint UserGroups Termine im Januar 2009 ppedv

# January 8, 2009 10:44 AM

Mirrored Blogs said:

Direkter Download: SPPD-108-2009-01-08 Veranstaltungen SharePoint UserGroups Termine im Januar 2009 ppedv

# January 8, 2009 11:14 AM

jackinthegreen said:

thanks for the nice solution. Question, is this something that could be used for a custom login application page in WSS 3.0 as well? thanks!

# March 12, 2009 1:36 PM

brad said:

I Supposed your solution assemble Sharepoint Form Validation http://www.sharepointboost.com/formvalidation.html, but their focus is different.

Good blog, though.

# March 18, 2009 11:15 PM

Anthony said:

Are there any security implications in implementing this?  Does this solution open any other vulnerabilities(i.e. through the GAC)?

# May 5, 2009 1:04 PM

pranab said:

Anthony,

This is just an sample and never tested for production. You need to modify and test it suitably if you want to use it in production.

# May 5, 2009 7:45 PM

Gunnar Peipman's ASP.NET blog said:

SharePoint Create your own customized usage report solution step by step SharePoint WebPart Property

# May 15, 2009 6:35 AM

Blog del CIIN said:

Como cada mes, desde hace ya un par de años, aquí os dejo el clásico recopilatorio

# June 1, 2009 10:26 AM

Miguel said:

The image is not showed in the form, I set the enableSessionState="true", but the form only shows an "X", could you pls help me?

# June 24, 2009 5:17 AM
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