How to check whether the text in a textbox is a hex?Thanks

[pcserver]

If i want to limit the users to input only 0-9 and A-F/a-f, how can i do
it?thanks

[Wayne]

I put the following in the KeyPress event of the text box. I would however
define temp somewhere out side the event.

string temp = "012345679abcdefABCDEF";

if (temp.IndexOf(e.KeyChar) == -1)

{

e.Handled = true;

}
--
Thanks
Wayne Sepega
Jacksonville, Fl
"When a man sits with a pretty girl for an hour, it seems like a minute. But
let him sit on a hot stove for a minute and it's longer than any hour.
That's relativity." - Albert Einstein

"pcserver" <te**@temp.com> wrote in message
news:us**************@tk2msftngp13.phx.gbl...

If i want to limit the users to input only 0-9 and A-F/a-f, how can i do
it?thanks

[Rajagopal Pasupuleti]

you can use Regex function

// Function to Check for AlphaNumeric.
public bool IsAlphaNumeric(String strToCheck)
{
Regex objAlphaNumericPattern=new Regex("[^a-zA-Z0-9]");
return !objAlphaNumericPattern.IsMatch(strToCheck);
}
--
rajagopal

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[pcserver]

Thanks