Steve Orr's Captcha control

  • Thread starter Thread starter matt p
  • Start date Start date
1. Unzip and place the DLL in your app's BIN directory.
2. Right-Click the "General" tab in the Toolbox.
3. Select "Choose Items".
4. Click the "Browse" button and navigate to the /bin directory of your app.
5. Select CAPTCHASP.dll and click the "Add" button.
6. Drag the CAPTCHASP icon which was added to the toolbox onto any Web Form.
7. Configure the Properties you want by placing the cursor on the CAPTCHA code
and choosing the Properties you want to configure from the Properties box.
8. Hit F5.




Juan T. Llibre, asp.net MVP
asp.net faq : http://asp.net.do/faq/
foros de asp.net, en español : http://asp.net.do/foros/
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I'm having a problem with Steve Orr's Captcha control. Iv'e followed all
the instructions. I'm using vs2005. First when I drag it onto the page it
gets a rendering error saying

After getting captcha success and submitting the page I get an explorer
error dialog saying " Validation of viewstate MAC faild. If this
applicationis hosted by a web farm........"

Can you imagine what might cause this?
 
As it turned out, the fix I used doesn't always work. I'll play with some
others but we really shouldn't have to be doing this to get a control to
work. Sometimes the "MAC" message still appears. Also I find there is no
causesvalidation property that I can set to false so it's not a very good
citizen on the page. Is there somewhere we can request enhancements and
fixes to Steve?

I was using another CAPTCHA control by Jeff Atwood but it just doesn't work
sometimes and sometimes it does.

Are you aware of any other controls?
thanks,
Gary
 
re:
!> Are you aware of any other controls?

There's a whole mess of them, some with source code included so,
if you want to turn out a better implementation, you can :

http://www.google.com/search?hl=en&q=captcha+"asp.net"

For a view contrary to using CAPTCHA, see :

http://weblogs.asp.net/rhoward/archive/2006/07/19/Why-no-CAPTCHA_3F00_.aspx

Rob Howard is one of the most respected ASP.NET developers there is.
He helped *develop* ASP.NET, and is the driving force behind Community Server.




Juan T. Llibre, asp.net MVP
asp.net faq : http://asp.net.do/faq/
foros de asp.net, en español : http://asp.net.do/foros/
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