<Window x:Class="TestOfDataConverter.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestOfDataConverter"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:CategoryToSourceConverter x:Key="cts" />
<local:StateToNullableBoolConverter x:Key="stnb" />
</Window.Resources>
<StackPanel Background="LightBlue" >
<ListBox x:Name="listBoxPlane"
Height="160"
Margin="5" >
<ListBox.ItemTemplate >
<DataTemplate >
<StackPanel Orientation="Horizontal">
<Image Width="20"
Height="20"
Source="{Binding Path=Category,Converter={StaticResource cts}}" />
<TextBlock Text="{Binding Path=Name}"
Width="60"
Margin="80,0" />
<CheckBox IsThreeState="True"
IsChecked="{Binding Path=State,Converter={StaticResource stnb}}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Button x:Name="buttonLoad"
Content="Load"
Height="25"
Margin="5,0"
Click="buttonLoad_Click" />
<Button x:Name="buttonSave"
Content="Save"
Height="25"
Margin="5,5"
Click="buttonSave_Click" />
</StackPanel>
</Window>
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;
namespace TestOfDataConverter
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void buttonLoad_Click(object sender, RoutedEventArgs e)
{
List<Plane> planeList = new List<Plane>()
{
new Plane(){Category = Category.Bomber,Name = "B-1",State = State.Unknown},
new Plane(){Category = Category.Bomber,Name = "B-2",State = State.Unknown},
new Plane(){Category = Category.Fighter,Name = "F-22",State = State.Unknown},
new Plane(){Category = Category.Fighter,Name = "Su-47",State = State.Unknown},
new Plane(){Category = Category.Bomber,Name = "B-52",State = State.Unknown},
new Plane(){Category = Category.Bomber,Name = "j-10",State = State.Unknown}
};
this.listBoxPlane.ItemsSource = planeList;
}
private void buttonSave_Click(object sender, RoutedEventArgs e)
{
StringBuilder sb = new StringBuilder();
foreach (Plane p in listBoxPlane.Items)
{
sb.AppendLine(string.Format("Category={0},Name={1},State={2}", p.Category, p.Name, p.State));
}
File.WriteAllText(@"PlaneList.txt",sb.ToString());
}
}
public enum Category
{
Bomber, Fighter
}
public enum State
{
Available, Locked, Unknown
}
public class Plane
{
public Category Category { get; set; }
public string Name { get; set; }
public State State { get; set; }
}
public class CategoryToSourceConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
Category c = (Category)value;
switch (c)
{
case Category.Bomber:
return @"Icons\Bomber.jpg";
case Category.Fighter:
return @"Icons\Fighter.jpg";
default:
return null;
}
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
public class StateToNullableBoolConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
State s = (State)value;
switch (s)
{
case State.Locked:
return false;
case State.Available:
return true;
case State.Unknown:
default:
return null;
}
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
bool? nb = (bool?) value;
switch (nb)
{
case true:
return State.Available;
case false:
return State.Locked;
case null:
default:
return State.Unknown;
}
}
}
}