Simple Regex question

[kozu]

I'm trying to verify if a character is a letter. Regex.IsMatch("3", "[a-zA-z]") returns TRUE when it should be FALSE. What am I doing wrong? thanx

[Jimmanuel]

why not just use the char.IsLetter(char c) function?

[Lost User]

Apart from what Jimmanuel said, your code returns FALSE for me. regards

[Daniel Grunwald]

>>> Regex.IsMatch("3", "[a-zA-z]")
false

Works for me. There must be something else wrong with your code.

[jas0n23]

Ok, the following code worked for me. I created a Windows Form with a textbox control and a button. Check it out:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

    private void button1\_Click(object sender, EventArgs e)
    {
        if (Regex.IsMatch(textBox1.Text, @"\[a-zA-z\]") == false)
        {
            MessageBox.Show("false - input is numeric.");
        }
        else
        {
            MessageBox.Show("true - input is non-numeric.");
        }
    }
}

}

hope this helps. Jay.

foreach( inch on Jason ) { Girlfriend.IsHappier(); }