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Geekpedia » C# Code » Validate String For Positive Integer Values

Validate String For Positive Integer Values

A very simple way to validate a string for positive integer values using C# and regular expressions.

On Saturday, October 18th 2008 at 05:00 AM

By Andrew Pociu (View Profile)

(Rated 4.2 with 5 votes)

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using System.Text.RegularExpressions;
 
Regex rxNums = new Regex(@"^\d+$"); // Any positive decimal
if (rxNums.IsMatch("4815162342"))
{
    MessageBox.Show("Numeric.");
}
else
{
    MessageBox.Show("Not numeric.");
}