A sample value converter.
<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="White">
<TextBlock Text="There is nothing to see here." />
</Grid>
</UserControl>
//File: Page.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
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.Animation;
using System.Windows.Shapes;
namespace SilverlightApplication3
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
}
public class YesNoValueConverter : IValueConverter
{
public object Convert(object value, Type targetType,
object parameter, System.Globalization.CultureInfo culture)
{
bool isYes = Boolean.Parse(value.ToString());
if (isYes == true )
return "Yes";
return "No";
}
public object ConvertBack(object value, Type targetType,
object parameter, System.Globalization.CultureInfo culture)
{
string boolText = value.ToString().ToLower();
if (boolText == "yes")
return true;
else if (boolText == "no")
return false;
else
throw new InvalidOperationException("Please enter 'yes' or 'no'.");
}
}
}
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