Regular Expression for Alphanumeric

Accepted answer

If the mean that the name must include at least one alphabetic and at least one numeric character, then use this:

^(?=.*\d)(?=.*[a-zA-Z])[a-zA-Z0-9]{2,}$

0

Resmi Satish13y ago

Thanks...

0

Iftikar Hussain13y ago

Hi,
Try like this

var text = textBox1.Text.Trim();

if (Regex.IsMatch(text, @"^([A-Za-z][A-Za-z0-9]{2,})*$"))

{

MessageBox.Show("Valid");

}

else

{

MessageBox.Show("Invalid");

}

Regards,
Iftikar

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Sanjeeb Lenka13y ago

use this

^[0-9a-zA-Z ]+$

OR

^[A-Za-z0-9]*$

USING YOUR REGULAR EXPRESSION WHAT PROBLEM YOU ARE GETTING

0