Panel is setting the data context to the scrollbar object : Panel « Windows Presentation Foundation

  



<Window x:Class="WpfApplication1.MainWindow"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:myConverters ="clr-namespace:WpfApplication1" 

    Title="Simple Data Binding" Height="334" Width="288" 

    WindowStartupLocation="CenterScreen" 

    >

  <Window.Resources>

    <myConverters:MyDoubleConverter x:Key="DoubleConverter"/>

    <myConverters:MyColorConverter x:Key="ColorConverter"/>

  </Window.Resources>

    <StackPanel Width="250" DataContext = "{Binding ElementName=mySB}">

     <ScrollBar Orientation="Horizontal" Name="mySB" Maximum = "100" LargeChange="1" SmallChange="1"/>

     <TextBox Name="txtThumbValue" Text = "{Binding Path=Value, Converter={StaticResource DoubleConverter}}"/>

     <Button Content="Click" FontSize = "{Binding Path=Value}" Background= "{Binding Path=Value, Converter={StaticResource ColorConverter}}"/>

  </StackPanel>

</Window>

//File:Window.xaml.cs

using System;

using System.Collections.Generic;

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;

using System.Collections.Generic;

namespace WpfApplication1

{

  public partial class MainWindow : Window

  {

    public MainWindow()

    {

      InitializeComponent();      

    }

  }



  class MyColorConverter : IValueConverter

  {

    public object Convert(object value, Type targetType, object parameter, 

      System.Globalization.CultureInfo culture)

    {

      double d = (double)value;

      byte v = (byte)d;



      Color color = new Color();

      color.A = 255;

      color.G = (byte) (155 + v);



      return new SolidColorBrush(color);

    }



    public object ConvertBack(object value, Type targetType, object parameter, 

      System.Globalization.CultureInfo culture)

    {

      return value;

    }

  }



  class MyDoubleConverter : IValueConverter 

  {

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

    {

      double v = (double)value;

      return (int)v;

    }



    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

    {

      return value;

    } 

  }

}
Panel is setting the data context to the scrollbar object : Panel « Windows Presentation Foundation « C# / C Sharp
