Regular Expression Help

  • Thread starter Thread starter sianan
  • Start date Start date
S

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!
 
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!
Click to expand...

--
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
 
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
 
\w*

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Chicken Salad Alchemist

Big thicks are made up of lots of little thins.
 
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