How to validate a text box

Question

1.00/5 (2 votes)

See more:

Hello..........

I am beginner in c# programming, want to know How does this code executes. Kindly describe in detail.

!System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "\\d+")

Soon reply will be appreciated.....!!!!

Thanks....
Reply·Email·View T

Posted 23-Jan-13 18:12pm

Member 9621354

Add a Solution

Comments

Shanmugam Rathakrishnan 24-Jan-13 1:02am

\d is a digit, + is 1 or more numbers, so a sequence of 1 or more digits

[no name] 30-Jan-13 7:13am

Hi please describe your query in details for understanding.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maksud Saifullah Pulak · Answer 1 · 2013-02-14T03:30:00

Solution 1

C#

Regex r = new Regex("^[a-zA-Z0-9]*$");
if (r.IsMatch(SomeString)) {
  ...
}

Posted 14-Feb-13 3:30am

Maksud Saifullah Pulak