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Function to filter cursed words


I was asked to create a function to detect cursed words in user's input and
reject user's input if found, does anybody know existing codes I can use?

Jan 24 '06 #1
5 1647
Try this - very effective algorithm to detect words in text

"John" <so*****@micros oft.com> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. ..

I was asked to create a function to detect cursed words in user's input
and reject user's input if found, does anybody know existing codes I can


Jan 24 '06 #2
Well, the way I do input masking for TextBoxes in a C# app is to use
the KeyPress event. This will be a little more difficult to catch
entire words. Basically, if we have.

TextBox someText = new TextBox();
someText.KeyPre ss += new KeyPressEventHa ndler(keyPressF unc);
private void keyPressFunc(ob ject sender, KeyPressEventAr gs e)
//here you can get the key that was pressed through e.KeyChar and
if you don't want that character to get processed
//use the following line of code

e.Handled = true;

//this will keep the textBox from processing the keystroke

This is how I keep users from doing things like entering text into
number only fields. It would take some modification to store key
strokes and compare them to a library of curse words. I hope this helps.

Jan 24 '06 #3
On Tue, 24 Jan 2006 13:19:58 -0800, "John" <so*****@micros oft.com>

I was asked to create a function to detect cursed words in user's input and
reject user's input if found, does anybody know existing codes I can use?


Be careful to look carefully at *exactly* how the filter works. There
is a town in England called Scunthorpe whose residents are all to
aware of the effect of sloppily programmed filters. That is not the
only example, but it does illustrate a real problem.


The ultimate truth is that there is no ultimate truth
Jan 24 '06 #4
Yes, and let us not forget the town of Penistone, either.

I've read that even Google's child-safe content filtering technology
does dumb stuff like this. It's not as easy as it looks to get it right.


rossum wrote:
Be careful to look carefully at *exactly* how the filter works. There
is a town in England called Scunthorpe whose residents are all to
aware of the effect of sloppily programmed filters. That is not the
only example, but it does illustrate a real problem.


Jan 28 '06 #5
And even if correctly implemented it can usually be easily side stepped by
somebody determined to cause offence - symbols, deliberate typos (french
connection UK for instance), additional spacing, etc - all of which can
leave the intent (and offence) without any cursed words...

Jan 30 '06 #6

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