Namespace: System.Windows.Controls

Library: PresentationFramework

The RadioButton is a control that is usually used as an item in a group however, it is possible to create a single radio button. Unlike a CheckBox, the user cannot clear the selected RadioButton by clicking it again.

We modify a little the previous demo. Look the code:

The Window1.xaml file is:

<Window  
    xmlns="http://schemas.microsoft.com/winfx/avalon/2005"
    xmlns:x="http://schemas.microsoft.com/winfx/xaml/2005"
    x:Class="DMU.Window1"
    Title="DMU Tutorials Serie"
    Top="100"
    Left= "100"
    Width="400"
    Height="400"
>

 <Canvas  Width="400"  Height="400" Background="DeepSkyBlue"  >
  <TextBlock  Name="Text1"   Canvas.Top="50" Canvas.Left="100"   FontSize="14">Choose one of the pieces:</TextBlock>
   <RadioButton   GroupName="grp" Name="Bt1" Canvas.Top="100" Canvas.Left="100"      Click="Hat">Hat</RadioButton>
   <RadioButton   GroupName="grp" Name="Bt2" Canvas.Top="100" Canvas.Left="200" Click = "Shoe">Shoe</RadioButton>
   <RadioButton    GroupName="grp" Name="Bt3" Canvas.Top="100" Canvas.Left="300" Click = "Shirt">Shirt</RadioButton>
   <TextBlock      Canvas.Top="200" Canvas.Left="100"   FontSize="14">Your selection was:</TextBlock>
  <TextBox Name = "TheItem" Canvas.Top="300" Canvas.Left="100" FontSize="14"/>
 </Canvas>
</Window>

And the Window1.xaml.cs file is:

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Shapes;
 
namespace DMU{
	 
public partial class Window1 : Window{
  
  public Window1(){
   InitializeComponent();
  }
  private void Hat(object sender, RoutedEventArgs e){
     TheItem.Clear();
     TheItem.Text = "Hat"  ;
  }
  private void Shoe(object sender, RoutedEventArgs e){
    TheItem.Clear();
    TheItem.Text = "Shoe";
  }
  private void Shirt(object sender, RoutedEventArgs e){
    TheItem.Clear();
    TheItem.Text = "Shirt";
  }
 } 
} 

IMPORTANT: We are not presenting the other 3 usual files of the application.

You can run the application. Please, you need to liberate the firewall.

After this introduction, some properties:

Background

The value will be a color.

BorderBrush

Also a color.

BorderThickness

Click

GroupName

Height

IsChecked

You need to use True | False. It's a read/write property.

IsEnabled

Margin

Name

Opacity

Visibility

Width

Some events. To be overrided.

The more important (you can see how to use it at the sample):

Click

Unchecked

Captures when the RadioButton is not anymore clicked.

KeyDown

KeyUp

And the usual mouse events:

  MouseDoubleClick    
  MouseDown    
  MouseEnter    
  MouseLeave    
  MouseLeftButtonDown    
  MouseLeftButtonUp    
  MouseMove    
  MouseRightButtonDown   
  MouseRightButtonUp    
  MouseUp    
   

OK. At this 24 lessons we tried to present the basics of the programming using WPF and C# for web applications. Now, you can read our tutorials about 3D game creation going to our homepage. Having doubts, read the SDK Documentation and try to contact the official WPF Forum at this link.

Thanks.

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