Remove Duplicate Element of an Array in Windows Store App


In my previous article I have described how to separate duplicate and non-duplicate element of array and here I describe how to remove duplicate elements of an array. When an array contains more than one of the same element then that element is called a duplicate element and I want to store each element only once.

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


Step 2

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










    <Grid Background="Red">


            <RowDefinition Height="110*"/>

            <RowDefinition Height="59*"/>

            <RowDefinition Height="40*"/>

            <RowDefinition Height="45*"/>

            <RowDefinition Height="514*"/>



            <ColumnDefinition Width="167*"/>

            <ColumnDefinition Width="230*"/>

            <ColumnDefinition Width="286*"/>


        <TextBlock Text="Array content is :" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Foreground="White" Grid.Column="1"  Grid.Row="1" TextAlignment="Left" Margin="0,0,375,12" Grid.ColumnSpan="2"/>

        <TextBlock x:Name="text1" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Foreground="White" Grid.Row="1" Margin="10,0,-21,0" Grid.Column="2" Width="583" VerticalAlignment="Top" HorizontalAlignment="Left" Height="54" />

        <TextBlock x:Name="text2" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Grid.Column="2" Grid.Row="2" HorizontalAlignment="Left" VerticalAlignment="Top" Height="40" Width="583" Margin="0,0,-11,0"></TextBlock>

        <TextBlock Text="After remove duplicate element array is :" FontSize="20" FontFamily="Arial" FontWeight="ExtraBold" Grid.Column="1" Grid.Row="2" Foreground="White" HorizontalAlignment="Left" Width="496" Grid.ColumnSpan="2"  />




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;

using System.Collections;

using System.Collections.Generic;


namespace remove_duplicate_element_of_an_array


    public sealed partial class MainPage : Page


        public MainPage()




        protected override void OnNavigatedTo(NavigationEventArgs e)


            int[] arr = { 14, 14, 65, 7, 8, 7, 47, 14, 7, 8 };


            for (int i = 0; i < arr.Length; i++)


                text1.Text += arr[i] + " ";


            int[] arr1 = arr.Distinct().ToArray();

            for (int i = 0; i < arr1.Length; i++)


                text2.Text += arr1[i] + " ";






Step 4


Now Run your app.