Sort Array in Descending Order in Windows Store App

Introduction

In my previous article I described Sort Array in Ascending order and this article describes how to sort an array in descending order. It is very simple by just using math reverse. Here I have first sorted the array in ascending order and then reverse the array.

Use the following procedure to create it.

Step 1

First of all you must create a new Windows Store Application.

  • Open Visual Studio 2012
  • "File" -> "New" -> "Project..."
  • Choose "Template" -> "Visual C#" -> "Window Store app"
  • Choose "Blank App (XAML)" then rename the application

new-windows-store-app.jpg

Step 2

Write the following XAML code in "Mainpage.Xaml" (that is available in Solution Explorer):

<Page

    x:Class="array_sorting.MainPage"

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

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

    xmlns:local="using:array_sorting"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d">

 

    <Grid Background="Red">

        <Grid.RowDefinitions>

            <RowDefinition Height="76*"/>

            <RowDefinition Height="46*"/>

            <RowDefinition Height="45*"/>

            <RowDefinition Height="42*"/>

            <RowDefinition Height="45*"/>

            <RowDefinition Height="514*"/>

        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="149*"/>

            <ColumnDefinition Width="287*"/>

            <ColumnDefinition Width="242*"/>

            <ColumnDefinition Width="688*"/>

        </Grid.ColumnDefinitions>

        <TextBlock Text="Enter the Array Element" FontFamily="Arial" FontSize="20" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="1"></TextBlock>

        <TextBox x:Name="textbox1" Grid.Column="2" Grid.Row="1" VerticalAlignment="Top" Height="32" Width="175" HorizontalAlignment="Left"  />

        <Button x:Name="button1" Grid.Column="2" Grid.Row="2" Background="Yellow" Foreground="Black" Width="150" VerticalAlignment="Top" Height="35" Content="Insert" Click="button1_Click" ></Button>

        <TextBlock x:Name="text1" Grid.Column="3" Grid.Row="1" Foreground="White" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" ></TextBlock>

        <Button x:Name="button2" Grid.Column="2" Grid.Row="3" Background="Yellow" Foreground="Black" Width="150" VerticalAlignment="Top" Height="35" Content="Show" Click="button2_Click" ></Button>

        <TextBlock x:Name="text2" Grid.Column="3" Grid.Row="3" Foreground="White" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" ></TextBlock>

        <Button x:Name="button3" Grid.Column="2" Grid.Row="4" Background="Yellow" Foreground="Black" Width="237" VerticalAlignment="Top" Height="35" Content="Show After descending sort" Click="button3_Click" ></Button>

        <TextBlock x:Name="text3" Grid.Column="3" Grid.Row="4" Foreground="White" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" ></TextBlock>

         

 

    </Grid>

</Page> 

Step 3

Now write the following C# code for the button within "Mainpage.Xaml.cs".

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using Windows.Foundation;

using Windows.Foundation.Collections;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

using Windows.UI.Xaml.Controls.Primitives;

using Windows.UI.Xaml.Data;

using Windows.UI.Xaml.Input;

using Windows.UI.Xaml.Media;

using Windows.UI.Xaml.Navigation;

 

namespace array_sorting

{

    public sealed partial class MainPage : Page

    {

        public MainPage()

        {

            this.InitializeComponent();

        }

        protected override void OnNavigatedTo(NavigationEventArgs e)

        {

        }

        int[] arr = new int[5];

        int i = 0;

        private void button1_Click(object sender, RoutedEventArgs e)

        {

            if (textbox1.Text.Length > 0)

            {

                if (i < arr.Length)

                {

                    arr[i] = int.Parse(textbox1.Text);

                    i++;

                    textbox1.Text = " ";

                }

                else

                {

                    text1.Text = "Sorry Array can contain only 5 element";

                }

            }

        }

 

        private void button2_Click(object sender, RoutedEventArgs e)

        {

            foreach (int a in arr)

            {

                text2.Text += a + " ";

            }

        }

 

        private void button3_Click(object sender, RoutedEventArgs e)

        {

            Array.Sort(arr);

            Array.Reverse(arr);

            foreach (int a in arr)

            {

                text3.Text += a + " ";

            }

        }

    }

}

 

Step 4

Now Run your app.

descending-app-output.jpg