Solved

Rude word filter

Posted on 2004-09-17
10
408 Views
Last Modified: 2012-03-15
Hi ppl!

I need to add a rude word filter to a webform to check if a user has entered an obscene word in a sentence stored in a string captured from a textbox. Can someone recommend a way of doing this in c#. Also does anyone know a source/library of common rude words to use?

Thanks for your help,
Kevin
0
Comment
Question by:tnook
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
10 Comments
 
LVL 3

Expert Comment

by:ruff_ryder
ID: 12090328
This sounds like a classic parsing problem. Basically what you want to do is parse the text for your predefined rude words when the Textbox text is validating. I'll start you off by telling you to have a look at the Validating Events for the Textbox control and also the Regex class to help you with the parsing.

Do some reading on those and make an attempt at some code. If you have further problems then check back here and I'll try to help.
0
 
LVL 19

Expert Comment

by:Desp
ID: 12090697
you can have an arraylist and then filll targat arraylist with all the common rude words...

if (RudeWords.Contains(InputWord)) //input word from user is being checked
 {
//word is catch!!
 }
0
 
LVL 18

Expert Comment

by:armoghan
ID: 12091101
This link shows an example to do such things
http://www.codefixer.com/codesnippets/replacebadwords.asp
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 10

Accepted Solution

by:
ptmcomp earned 400 total points
ID: 12091150
This could work similar to SPAM filters like K9. First parse the text and seperate words (e.g. using regex), then look them up in a hashtable/database.
0
 
LVL 7

Expert Comment

by:jackiechen858
ID: 12091334
I agree with ptmcomp's suggestion:

                  string Commend= "I love this game game";

                  string []words= Commend.Split(new Char[] {' '});
                  Hashtable ht = new Hashtable();
                  for ( int i=0;i< words.Length;i++)
                  {
                        if ( !ht.ContainsKey(words[i].ToLower()) )
                              ht.Add(words[i],words[i].ToLower());
                  }
                  ArrayList badwords = new ArrayList();
                  badwords.Add("bad");
                  bool bFind = false;
                  for ( int i=0;i<badwords.Count;i++)
                  {
                        if ( ht.ContainsKey(badwords[i]))
                        {
                              bFind=true;
                              break;
                        }
                  }


If the input is quite a long sentence, it will be more efficient than searching the whole string. But if the input is a different language which don't split words by space,  that's a different story.
0
 
LVL 6

Expert Comment

by:DominicCronin
ID: 12093144
Don't forget that a poor implementation will earn you the scorn of all the inhabitants of Scunthorpe and Penistone.
0
 
LVL 10

Expert Comment

by:smegghead
ID: 12102782
I know Scunthorpe is a place, and a football team, but is Penistone a place ?? never heard of that one.
0
 
LVL 6

Expert Comment

by:DominicCronin
ID: 12105228
Indeed Penistone is a place. I imagine they suffer just as badly as Scunthorpe in the Internet filtering game. Still - Scunthorpe is more famous, if only because of the ill-fated proposal to change the name to Sconthorpe for Internet use. Talk about get a life!
0
 
LVL 10

Expert Comment

by:smegghead
ID: 12105271
Then they'd have the trouble with whether to pronounce it Scone-Thorpe or Scon-Thorpe

Anyway... :-)
0

Featured Post

Enroll in June's Course of the Month

June's Course of the Month is now available! Every 10 seconds, a consumer gets hit with ransomware. Refresh your knowledge of ransomware best practices by enrolling in this month's complimentary course for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question