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:
Here is the screenshot of the Solution Explorer:
You can download the WSP file and the project in a zip file from here.
PingBack from http://stevepietrek.com/2008/12/11/links-12112008/
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
Dezember HotFix Update The December cumulative update for WSS V3 and MOSS 2007 WSS Download http://support
Direkter Download: SPPD-108-2009-01-08 Veranstaltungen SharePoint UserGroups Termine im Januar 2009 ppedv
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!
I Supposed your solution assemble Sharepoint Form Validation http://www.sharepointboost.com/formvalidation.html, but their focus is different.
Good blog, though.
Are there any security implications in implementing this? Does this solution open any other vulnerabilities(i.e. through the GAC)?
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.
SharePoint Create your own customized usage report solution step by step SharePoint WebPart Property
Como cada mes, desde hace ya un par de años, aquí os dejo el clásico recopilatorio
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?
After deploying this solution, all I get is this error...
Failed to determine definition for Feature with ID 'f3808a5f-354c-4216-bf9e-dcfa8c44f0fc'. Skipping this feature for element querying consideration.
Exception Type: System.NullReferenceException Exception Message: Object reference not set to an instance of an object.
any ideas anyone
@Rob Ashcroft: There is no feature included within the WSP. The feature ID specified relates to the RoleManagement feature within MOSS and is likely unrelated.
@pranab: I have deployed the solution and am receiving a blank image. Looking at the source I notice that GenerateImage.aspx contains no data to render the CAPTCHA image. Are you able to provide the required rendering for this??