C# WPF RegEx Check Number

標題：使用RegEx進行數字比對
C# (MainWindow.xaml.cs)：

using System;
using System.Windows;
using System.Text.RegularExpressions; //RegEx

namespace WPFRegEx {
    public partial class MainWindow : Window {
        public MainWindow() {
            InitializeComponent();
        }
        public void CheckRegEx(string text) {
            Regex regex = new Regex("^[0-9]+$"); //建立RegEx規則
            Match result = regex.Match(text); //字串比對
            if (result.Success) {
                System.Windows.MessageBox.Show("True");
            } else {
                System.Windows.MessageBox.Show("False");
            }
        }
        private void btn_Click(object sender, RoutedEventArgs e) {
            CheckRegEx(tbx.Text);
        }
    }
}

WPF (MainWindow.xaml.cs)：

<Window x:Class="WPFRegEx.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <TextBox Height="30" Margin="20,20,20,0" Name="tbx" VerticalAlignment="Top" />
        <Button Content="Button" Height="30" Margin="20,70,20,0" Name="btn" VerticalAlignment="Top" Click="btn_Click" />
    </Grid>
</Window>

範例結果：


說明：
在C# WPF使用RegEx判斷字串是否為數字之基礎範例。