C#

WebForms

Validate numeric textbox using int.tryparse visual C#.NET

Daaron

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3.67/5 (3 votes)

12 Sep 2011CPOL 14.5K   6

You could do the same thing with a regular expression:if (Regex.Replace(textBox1.Text, @"\D", "") == textBox1.Text){textBox2.Text = ("tryparse method succeed");} else { textBox2.Text=("value entered is not numeric"); }

You could do the same thing with a regular expression:

C#

if (Regex.Replace(textBox1.Text, @"\D", "") == textBox1.Text)
{
textBox2.Text = ("tryparse method succeed");
} else { textBox2.Text=("value entered is not numeric"); }

License

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

Written By

Daaron

Web Developer

 United States

Raised by wolves in the mean streets of Macintosh C/C++ for IBM and Motorola, moved on to Delphi and now C#. Ah, the mother's milk of Microsoft...

Comments and Discussions

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Reason for my vote of 4 Validation should be performed first... DrABELL13-Sep-11 3:06 DrABELL 13-Sep-11 3:06  Reason for my vote of 4 Validation should be performed first on the client side; it could be also accompanied by server side validation like this. I would also recommend to use a Label control instead of TextBox2. Yutz? Careful, your ego is showing... ChunkyStool12-Sep-11 15:27 ChunkyStool 12-Sep-11 15:27  Yutz? Careful, your ego is showing... What a yutz. That's why they call it an alternative. Daaron12-Sep-11 12:19 Daaron 12-Sep-11 12:19  What a yutz. That's why they call it an alternative. Re: thanks for your contribution, Aria Wijaya12-Sep-11 14:57 Aria Wijaya 12-Sep-11 14:57  thanks for your contribution, Reason for my vote of 2 This alternative does not work for s... ChunkyStool12-Sep-11 11:44 ChunkyStool 12-Sep-11 11:44  Reason for my vote of 2 This alternative does not work for several valid cases. Re: thank you for pointing out the limitation, great stuff Aria Wijaya12-Sep-11 14:58 Aria Wijaya 12-Sep-11 14:58  thank you for pointing out the limitation, great stuff

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