Author: coder

Output color by R G B value for a Bitmap

Posted on by coder 
   
 
using System;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;

public class Analyzer {
    public static void Main() {
        Image sample = new Bitmap("a.jpg");
        MemoryStream buf = new MemoryStream();
        sample.Save(buf, ImageFormat.Bmp);
        byte[] currentImage = buf.GetBuffer();
        
        int[] stats = new int[3];
        for (int i = 0; i < currentImage.Length; ){
            for (int j = 0; j < 3; j++) {
                stats&#91;j&#93; += currentImage&#91;i&#93;;
                ++i;
            }
        }    
        Console.WriteLine("Blue: " + stats&#91;0&#93;);
        Console.WriteLine("Green: " + stats&#91;1&#93;);
        Console.WriteLine("Red: " + stats&#91;2&#93;);
        if ((stats&#91;0&#93; > stats[1]) &amp;&amp; (stats[0] > stats[2]))
            Console.WriteLine("This is a cold picture.");
        if ((stats[1] > stats[0]) &amp;&amp; (stats[1] > stats[2]))
            Console.WriteLine("This is a summer picture.");
        if ((stats[2] > stats[0]) &amp;&amp; (stats[2] > stats[1]))
            Console.WriteLine("This is a fiery picture.");
    }
}

XmlDataProvider and XmlNamespaceMapping

Posted on by coder 


   
  

<Window x:Class="XmlBinding.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:local="clr-namespace:XmlBinding"
  Title="XmlBinding" Height="325" Width="400">
  <Window.Resources>
    <XmlDataProvider x:Key="Company" XPath="/sb:Company/sb:Employee">
      <XmlDataProvider.XmlNamespaceManager>
        <XmlNamespaceMappingCollection>
          <XmlNamespaceMapping Uri="http://company.com" Prefix="sb" />
        </XmlNamespaceMappingCollection>
      </XmlDataProvider.XmlNamespaceManager>

      <x:XData>
        <Company xmlns="http://company.com">
          <Employee Name="A" Age="11" />
          <Employee Name="B" Age="12" />
          <Employee Name="C" Age="38" />
        </Company>
      </x:XData>
    </XmlDataProvider>

    <local:AgeToForegroundConverter x:Key="ageConverter" />
  </Window.Resources>
  <StackPanel DataContext="{StaticResource Company}">
    <ListBox ItemsSource="{Binding}" IsSynchronizedWithCurrentItem="True">
      <ListBox.GroupStyle>
        <x:Static Member="GroupStyle.Default" />
      </ListBox.GroupStyle>
      <ListBox.ItemTemplate>
        <DataTemplate>
          <TextBlock>
            <TextBlock Text="{Binding XPath=@Name}" />
            (age: <TextBlock Text="{Binding XPath=@Age}" Foreground="{Binding XPath=@Age, Converter={StaticResource ageConverter}}" />)
          </TextBlock>
        </DataTemplate>
      </ListBox.ItemTemplate>
    </ListBox>
    <TextBlock>Name:</TextBlock>
    <TextBox Text="{Binding XPath=@Name}" />
    <TextBlock>Age:</TextBlock>
    <TextBox Text="{Binding XPath=@Age}" Foreground="{Binding XPath=@Age, Converter={StaticResource ageConverter}}" />

 </StackPanel>
</Window>
//File:Window.xaml.cs


using System;
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.Shapes;
using System.Collections.Generic;
using System.Diagnostics;
using System.Collections;
using System.Data;
using System.Data.OleDb;
using System.ComponentModel;
using System.Xml;

namespace XmlBinding {

  public partial class Window1 : Window {

    public Window1() {
      InitializeComponent();

    }

    ICollectionView GetCompanyView() {
      DataSourceProvider provider = (DataSourceProvider)this.FindResource("Company");
      return CollectionViewSource.GetDefaultView(provider.Data);
    }

  }

  public class AgeToForegroundConverter : IValueConverter {
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
      Debug.Assert(targetType == typeof(Brush));

      int age = int.Parse(value.ToString());
      return (age > 25 ? Brushes.Red : Brushes.Black);
    }

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

      throw new NotImplementedException();
    }
  }

}

XmlDataProvider and ItemsControl

Posted on by coder 


   
  


<Page x:Class="WpfInteropShortcomings.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WpfInteropShortcomings"
    >
  <Page.Resources>
    <XmlDataProvider x:Key="items" XPath="/Items/Item">
      <x:XData>
        <Items xmlns="">
          <Item Title="A" Target="A.xaml" />
          <Item Title="B" Target="B.xaml" />
          <Item Title="C" Target="C.xaml" />
        </Items>
      </x:XData>
    </XmlDataProvider>
    <DataTemplate x:Key="itemTemplate">
      <TextBlock>
        <Hyperlink NavigateUri="{Binding XPath=@Target}">
          <TextBlock Text="{Binding XPath=@Title}" />
        </Hyperlink>
      </TextBlock>
    </DataTemplate>
  </Page.Resources>

  <ItemsControl DataContext="{StaticResource items}" ItemsSource="{Binding}"
                ItemTemplate="{StaticResource itemTemplate}"
                VerticalAlignment="Top" HorizontalAlignment="Left"/>
</Page>
//File:Window.xaml.cs
using System;
using System.Collections.Generic;
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.Shapes;
using System.Windows.Interop;
using System.Windows.Forms.Integration;


namespace WpfInteropShortcomings
{
    public partial class Window1 : Page
    {
        public Window1()
        {
            InitializeComponent();

            ElementHost elemHost = new ElementHost();
            elemHost.PropertyMap.Add("Text",
                delegate(object host, string prop, object val)
                {
                    ContentControl c = (ContentControl) elemHost.Child;
                    //c.Content = val;
                    Console.WriteLine(val);
                });
        }
    }
}

Hyperlink and xpath filter for XmlDataProvider

Posted on by coder 


   
  



<Page x:Class="WpfInteropShortcomings.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WpfInteropShortcomings"
    >
  <Page.Resources>
    <XmlDataProvider x:Key="items" XPath="/Items/Item">
      <x:XData>
        <Items xmlns="">
          <Item Title="A" Target="A.xaml" />
          <Item Title="B" Target="B.xaml" />
          <Item Title="C" Target="C.xaml" />
        </Items>
      </x:XData>
    </XmlDataProvider>
    <DataTemplate x:Key="itemTemplate">
      <TextBlock>
        <Hyperlink NavigateUri="{Binding XPath=@Target}">
          <TextBlock Text="{Binding XPath=@Title}" />
        </Hyperlink>
      </TextBlock>
    </DataTemplate>
  </Page.Resources>

  <ItemsControl DataContext="{StaticResource items}" ItemsSource="{Binding}"
                ItemTemplate="{StaticResource itemTemplate}"
                VerticalAlignment="Top" HorizontalAlignment="Left"/>
</Page>
//File:Window.xaml.cs
using System;
using System.Collections.Generic;
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.Shapes;
using System.Windows.Interop;
using System.Windows.Forms.Integration;


namespace WpfInteropShortcomings
{
    public partial class Window1 : Page
    {
        public Window1()
        {
            InitializeComponent();

            ElementHost elemHost = new ElementHost();
            elemHost.PropertyMap.Add("Text",
                delegate(object host, string prop, object val)
                {
                    ContentControl c = (ContentControl) elemHost.Child;
                    //c.Content = val;
                    Console.WriteLine(val);
                });
        }
    }
}

Load XmlDocument to XmlDataProvider

Posted on by coder 


   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:WpfApplication1"
    Title="Window1" Height="400" Width="600" Loaded="Window_Loaded" Name="window">
    <Window.Resources>
        <XmlDataProvider x:Key="xaml" />
    </Window.Resources>
    <StackPanel>
        <TreeView Name="treeView1" ItemsSource="{Binding Source={StaticResource xaml}, XPath=*}">
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding XPath=*}">
                    <TextBlock Text="{Binding Path=Name}" />
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
        <TextBox Text="{Binding ElementName=treeView1, Path=SelectedItem.OuterXml, Mode=OneWay}" TextWrapping="Wrap" />
    </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.IO;
using System.Windows.Markup;
using System.Xml;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            string xaml = XamlWriter.Save(this);

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xaml);

            XmlDataProvider provider = (XmlDataProvider)FindResource("xaml");
            provider.Document = doc;
            provider.Refresh();
        }
    }
}

Get XmlElement from Bounded view

Posted on by coder 


   
  
<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:local="clr-namespace:WpfApplication1"
  Title="XmlBinding" Height="325" Width="400">
  <Window.Resources>
    <local:AgeToForegroundConverter x:Key="ageConverter" />
  </Window.Resources>
  <StackPanel Name="stackPanel">
    <ListBox ItemsSource="{Binding}" IsSynchronizedWithCurrentItem="True">
      <ListBox.GroupStyle>
        <x:Static Member="GroupStyle.Default" />
      </ListBox.GroupStyle>
      <ListBox.ItemTemplate>
        <DataTemplate>
          <TextBlock>
            <TextBlock Text="{Binding XPath=@Name}" />
            (age: <TextBlock Text="{Binding XPath=@Age}" Foreground="{Binding XPath=@Age, Converter={StaticResource ageConverter}}" />)
          </TextBlock>
        </DataTemplate>
      </ListBox.ItemTemplate>
    </ListBox>
    <TextBlock>Name:</TextBlock>
    <TextBox Text="{Binding XPath=@Name}" />
    <TextBlock>Age:</TextBlock>
    <TextBox Text="{Binding XPath=@Age}" Foreground="{Binding XPath=@Age, Converter={StaticResource ageConverter}}" />
    <Button Name="birthdayButton">Birthday</Button>
  </StackPanel>
</Window>
//File:Window.xaml.cs
using System;
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.Shapes;
using System.Collections.Generic;
using System.Diagnostics;
using System.Collections;
using System.Data;
using System.Data.OleDb;
using System.ComponentModel;
using System.Xml;

namespace WpfApplication1
{
    public class AgeToForegroundConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            Debug.Assert(targetType == typeof(Brush));
            int age = int.Parse(value.ToString());
            return (age > 60 ? Brushes.Red : Brushes.Black);
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }


    public partial class Window1 : Window
    {
        XmlDocument doc;
        public Window1()
        {
            InitializeComponent();

            doc = new XmlDocument();
            doc.LoadXml(@"<Company xmlns=&#039;http://company.com&#039;>
  <Employee Name=&#039;A&#039; Age=&#039;61&#039; />
  <Employee Name=&#039;B&#039; Age=&#039;72&#039; />
  <Employee Name=&#039;C&#039; Age=&#039;38&#039; />
</Company>");

            XmlNamespaceManager manager = new XmlNamespaceManager(doc.NameTable);
            manager.AddNamespace("sb", "http://company.com");
            Binding.SetXmlNamespaceManager(stackPanel, manager);

            Binding b = new Binding();
            b.XPath = "/sb:Company/sb:Employee";
            b.Source = doc;
            stackPanel.SetBinding(StackPanel.DataContextProperty, b);

            this.birthdayButton.Click += birthdayButton_Click;

        }

        void birthdayButton_Click(object sender, RoutedEventArgs e) {
      ICollectionView view = CollectionViewSource.GetDefaultView(stackPanel.DataContext);

      XmlElement person = (XmlElement)view.CurrentItem;
      person.SetAttribute("Age",(int.Parse(person.Attributes["Age"].Value) + 1).ToString());
      Console.WriteLine(person.Attributes["Name"].Value);
      Console.WriteLine(person.Attributes["Age"].Value);
    }
    }
}

xps file viewer

Posted on by coder 


   
  
<Window x:Class="Documents.ViewXPS"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="ViewXps" Height="300" Width="300" Loaded="window_Loaded">
  <DocumentViewer Name="docViewer">
 
  </DocumentViewer>
</Window>

//File:Window.xaml.cs

using System;
using System.Collections.Generic;
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.Shapes;
using System.Windows.Xps.Packaging;
using System.IO;

namespace Documents
{
    public partial class ViewXPS : System.Windows.Window
    {
        public ViewXPS()
        {
            InitializeComponent();
        }

        private void window_Loaded(object sender, RoutedEventArgs e)
        {
            XpsDocument doc = new XpsDocument("a.xps", FileAccess.Read);
            docViewer.Document = doc.GetFixedDocumentSequence();
            doc.Close();
        }
    }
}