Incremental Search Demo (.NET/WPF)

talk open source
1

Hey everyone,
I was browsing through some programs I wrote for fun, and one such program is an Incremental Search demo that filters through a list of words as characters are entered into an input field. Here are the screenshots of the app in Vista and XP:

I also went ahead and used ClickOnce [tutorial] to create an automatic installer, so those of you on XP/Vista can test it out on your own machines: [URL=“http://www.kirupafx.com/IncrementalSearch/publish.htm”]http://www.kirupafx.com/IncrementalSearch/publish.htm

The source files for this can be accessed from the following location: http://www.kirupa.com/net/code/IncrementalSearch.zip

The XAML code:


<Window
 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xml:lang="en-US"
 x:Class="IncrementalSearch.Window1"
 x:Name="Window"
 Title="Incremental Search"
 Width="262" Height="365" Icon="	ext_align_left.png" ResizeMode="NoResize" WindowStyle="SingleBorderWindow">
 <Window.Background>
  <LinearGradientBrush EndPoint="0.555,1.098" StartPoint="0.274,0.258" SpreadMethod="Pad">
   <GradientStop Color="#FFF6F6F8" Offset="0"/>
   <GradientStop Color="#FFCADEF6" Offset="0.779"/>
  </LinearGradientBrush>
 </Window.Background>
 <Grid x:Name="LayoutRoot">
  <Label Margin="19,3,5,0" x:Name="lblInfo" VerticalAlignment="Top" Height="29" FontSize="14" FontWeight="Normal" Content="Start typing a word below:" Background="#00F4C2C2"/>
  <TextBox Margin="20,36,19,0" x:Name="txtInput" VerticalAlignment="Top" Height="23" Background="#BFFFFFFF" BorderThickness="2,2,2,2" Text="" TextWrapping="NoWrap" TextChanged="inputChanged"/>
  <ListView Margin="20,76,19,16" x:Name="lstResults" IsSynchronizedWithCurrentItem="True">
   <ListView.View>
    <GridView>
     <GridViewColumn Header="GridViewColumn"/>
    </GridView>
   </ListView.View>
  </ListView>
  <Image HorizontalAlignment="Left" Margin="5,10,0,0" VerticalAlignment="Top" Width="16" Height="16" Source="magnifier.png" Stretch="Fill"/>
 </Grid>
</Window>

And the C# code is:


using System;
using System.IO;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Collections.Generic;
using System.Resources;
using System.Reflection;
namespace IncrementalSearch
{
 public partial class Window1
 {
        List<string> wordList;
  public Window1()
  {
   this.InitializeComponent();
   
   // Insert code required on object creation below this point.
            loadText();
            setupColumn();
  }
        private void inputChanged(object sender, TextChangedEventArgs e)
        {
            string searchString = txtInput.Text.ToLower();
            lstResults.Items.Clear();
            foreach (string currentWord in wordList)
            {
                if (currentWord.IndexOf(searchString) != -1)
                {
                    displayWord(currentWord);
                }
            }
        }
        private void displayWord(string wordToAdd)
        {
            lstResults.Items.Add(wordToAdd);
        }
        private void loadText()
        {
            TextReader tr = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream("IncrementalSearch.words.txt"));
            string currentLine = tr.ReadLine();
            wordList = new List<string>();
            while (currentLine != null)
            {
                wordList.Add(currentLine.ToLower());
                displayWord(currentLine.ToLower());
                currentLine = tr.ReadLine();
            }
        }
        private void setupColumn()
        {
            GridViewColumn column = (lstResults.View as GridView).Columns[0];
            column.Header = "Results";
            column.Width = 150;
        }
 }
}

For the XAML, I used Expression Blend, and for the C#, I used Visual Studio with the [URL=“http://www.microsoft.com/downloads/details.aspx?familyid=F54F5537-CC86-4BF5-AE44-F5A1E805680D&displaylang=en”]WPF Extensions. The WPF Extensions are required if you want to open the entire project in Visual Studio.

If there are any questions, feel free to ask!

Cheers!
Kirupa :slight_smile: