Regular Expression Help

[sianan]

I am looking for a regular expression to validate input into a textbox.
I only want to allow valid alpha-numeric characters (no special
characters, such as ?, *, {} [] etc...).

An example would be much-appreciated!

Thanks!

 

[Guest]

Read that carefully http://www.15seconds.com/issue/010301.htm
I hope it helps

I am looking for a regular expression to validate input into a textbox.
I only want to allow valid alpha-numeric characters (no special
characters, such as ?, *, {} [] etc...).

An example would be much-appreciated!

--
WBR,
Michael Nemtsev :: blog: http://spaces.msn.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche

 

[John Duval]

Hi sianan,
You could handle the keypress event and just allow numeric values. You
might also want to allow the delete key. Something like this:

void textBox1_KeyPress(object sender,
System.Windows.Forms.KeyPressEventArgs e)
{
const char Delete = (char)8;
e.Handled = !char.IsDigit(e.KeyChar) && e.KeyChar != Delete;
}

Hope that helps,
John

 

[Kevin Spencer]

\w*

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Chicken Salad Alchemist

Big thicks are made up of lots of little thins.