Archives for: November 2008, 23

Nov 23

Regular Expression Validation

I like to use regular expression validation. That is simple.
You only need to use:

Code:

using System.Text.RegularExpressions

For the numeric value validation:

Code:

Regex regex = new Regex(@"^[0-9]*$");
if (!regex.IsMatch(textBox1.Text))
{
MessageBox.Show("Invalid value, integer only!");
}

	`Regex regex = new Regex(@"^[0-9]*$");`
	`if (!regex.IsMatch(textBox1.Text))`
	`{`
	`MessageBox.Show("Invalid value, integer only!");`
	`}`