Mega Code Archive

 
Categories / C# / WPF
 

StackPanel PreviewTextInput and PreviewKeyDown

<Window x:Class="RoutedEvents.OnlyNumbers"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="Only Numbers" Height="300" Width="300">     <StackPanel Margin="5" PreviewTextInput="pnl_PreviewTextInput" PreviewKeyDown="pnl_PreviewKeyDown">         <TextBox Margin="3" AcceptsTab="False"></TextBox>         <TextBox Margin="3"></TextBox>         <TextBox Margin="3"></TextBox>     </StackPanel>      </Window> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace RoutedEvents {     public partial class OnlyNumbers : System.Windows.Window     {         public OnlyNumbers()         {             InitializeComponent();         }         private void pnl_PreviewTextInput(object sender, TextCompositionEventArgs e)         {             short val;             if (!Int16.TryParse(e.Text, out val))             {                 e.Handled = true;             }                     }         private void pnl_PreviewKeyDown(object sender, KeyEventArgs e)         {             if (e.Key == Key.Space)             {                 e.Handled = true;             }         }     } }