In this article I am going to describe how to convert octal based number into a binary based number. So first of all I will describe what an octal based number is and what a binary based number is.
Octal Number: A number expressed using the base 8 number system with digits 0 to 7.
Binary Number: A number expressed using the base 2 number with digits 0 and 1.
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="octal_to_binary_app.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:octal_to_binary_app"
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.ColumnDefinitions>
<ColumnDefinition Width="316*"/>
<ColumnDefinition Width="256*"/>
<ColumnDefinition Width="295*"/>
<ColumnDefinition Width="499*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="78*"/>
<RowDefinition Height="49*"/>
<RowDefinition Height="37*"/>
<RowDefinition Height="40*"/>
<RowDefinition Height="39*"/>
<RowDefinition Height="525*"/>
</Grid.RowDefinitions>
<TextBlock Text="Octal to binary Converter app" Grid.ColumnSpan="4" Grid.Row="1" Foreground="White" FontSize="20" FontFamily="Arial" TextAlignment="Center" FontWeight="ExtraBold"></TextBlock>
<TextBlock Text="Entern Octal Number :" FontFamily="Arial" FontSize="15" Foreground="White" Grid.Column="1" Grid.Row="2" Grid.RowSpan="4" FontWeight="ExtraBold"></TextBlock>
<TextBox x:Name="textbox1" Grid.Column="2" Grid.Row="2" Width="200" HorizontalAlignment="Left" Height="20" VerticalAlignment="Top" />
<TextBlock Text="Eqivalent binary Number is " FontSize="15" Foreground="White" Grid.Column="1" Grid.Row="3" FontWeight="ExtraBold"></TextBlock>
<TextBlock x:Name="text1" FontSize="15" Foreground="White" Grid.Column="2" Grid.Row="3" Width="200" HorizontalAlignment="Left" ></TextBlock>
<Button x:Name="button1" Grid.Column="2" Grid.Row="4" Background="Yellow" Foreground="Black" Width="150" Content="Click" Click="button1_Click" Margin="0,1,0,0"></Button>
<TextBlock x:Name="error" FontSize="15" Foreground="White" Grid.Column="3" Grid.Row="3" Width="200" HorizontalAlignment="Left"></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 octal_to_binary_app
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
}
private void button1_Click(object sender, RoutedEventArgs e)
{
string[] octalnum = new string[25];
int r,i=0;
int num = Convert.ToInt32(textbox1.Text);
while (num != 0)
{
r = num % 10;
switch (r)
{
case 0:
octalnum[i++]="000";
break;
case 1:
octalnum[i++]="001";
break;
case 2:
octalnum[i++]="010";
break;
case 3:
octalnum[i++]="011";
break;
case 4:
octalnum[i++]="100";
break;
case 5:
octalnum[i++]="101";
break;
case 6:
octalnum[i++]="110";;
break;
case 7:
octalnum[i++]="111";
break;
default:
{
error.Text = "Invalid octal number";
textbox1.Text = "";
goto ax;
}
}
num = num / 10;
}
for (int j = i-1; j >=0; j--)
{
text1.Text+= octalnum[j];
}
ax: { }
}
}
}
Step 4
Now "Run" your app.
![output-of-octal-app.jpg]()