Mega Code Archive
Implementing Data Binding in Silverlight Applications
<![CDATA[
<UserControl x:Class='SilverlightApplication3.MainPage'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:d='http://schemas.microsoft.com/expression/blend/2008'
xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'
mc:Ignorable='d'
d:DesignWidth='640'
d:DesignHeight='480'>
<Grid x:Name="LayoutRoot" Background="LightBlue">
<TextBlock x:Name="nameTitle"
Text="{Binding Name, Mode=OneWay}"
FontSize="30"
VerticalAlignment="Top"
HorizontalAlignment="Left"
Margin="10,10,0,0"
Height="50" Width="300" />
<TextBox x:Name="nameBox"
Text="{Binding Name, Mode=TwoWay}"
VerticalAlignment="Top"
HorizontalAlignment="Left"
Margin="10,80,0,0"
Height="30" Width="300" />
<ListBox x:Name="numberList"
ItemsSource="{Binding Numbers, Mode=OneWay}"
VerticalAlignment="Top"
HorizontalAlignment="Left"
Margin="10,120,0,0"
Height="120" Width="300" />
<Button x:Name="UpdateBtn" Content="Update"
VerticalAlignment="Bottom"
Margin="-120,0,0,10"
Height="30" Width="100" />
<Button x:Name="SwitchBtn" Content="Switch"
VerticalAlignment="Bottom"
Margin="120,0,0,10"
Height="30" Width="100" />
</Grid>
</UserControl>
//File:Page.xaml.cs
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.ComponentModel;
namespace SilverlightApplication3
{
public partial class MainPage : UserControl
{
Contact personA, personB, current;
Boolean isCurrentA;
public MainPage()
{
InitializeComponent();
initData();
setContext(personA);
isCurrentA = true;
UpdateBtn.Click += new RoutedEventHandler(doUpdate);
SwitchBtn.Click += new RoutedEventHandler(doSwitch);
}
void initData()
{
personA = new Contact();
personA.Name = "Mike";
personA.Numbers =
new List<string>() { "111-222-333", "444-555-6666" };
personB = new Contact();
personB.Name = "Ted";
personB.Numbers =
new List<string>() { "123-456-7890", "098-765-4321" };
}
void setContext(Contact c)
{
current = c;
LayoutRoot.DataContext = c;
}
void doUpdate(object sender, RoutedEventArgs e)
{
current.Name = nameBox.Text;
}
void doSwitch(object sender, RoutedEventArgs e)
{
if (isCurrentA)
{
setContext(personB);
isCurrentA = false;
}
else
{
setContext(personA);
isCurrentA = true;
}
}
}
public class Contact : INotifyPropertyChanged
{
private string ContactName;
private List<string> ContactNumbers;
public event PropertyChangedEventHandler PropertyChanged;
public Contact()
{
}
public void NotifyPropertyChanged(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this,
new PropertyChangedEventArgs(property));
}
}
public string Name
{
get { return ContactName; }
set
{
ContactName = value;
NotifyPropertyChanged("Name");
}
}
public List<string> Numbers
{
get { return ContactNumbers; }
set
{
ContactNumbers = value;
NotifyPropertyChanged("Numbers");
}
}
}
}
]]>