The type or namespace name could not be found (New to XAML)

Question

So I'm trying to work a very simple dice app on a XAML document using Visual Studio 2012, but I can't figure out what to do with the error. I've tried adding using bitmapimage; but it still won't work.

Here are the errors I'm getting:

Error   1   Undefined namespace. The 'using' URI refers to a namespace 'DiceRoll' that could not be found.
Error   2   The type or namespace name 'BitmapImage' could not be found (are you missing a using directive or an assembly reference?)

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 BitmapImage;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace DiceRoll
{
    /// <summary> 
    /// Interaction logic for MainWindow.xaml 
    /// </summary> 
    public partial class MainPage : Page
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            Random num = new Random();
            int Number = num.Next(1, 7);
            BitmapImage Img = new BitmapImage(new Uri(@"DiceFaces\" + Number.ToString() + ".bmp", UriKind.Relative));

            textBlock1.Text = Number.ToString() + " Number";
            image1.Source = Img;


        }
    }
}

XAML:

<Page
    x:Class="DiceRoll.MainPage"
    IsTabStop="false"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:DiceRoll"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid>
        <TextBlock Height="56" HorizontalAlignment="Left" Margin="275,134,0,0" Name="textBlock1"  VerticalAlignment="Top" Width="182" />
        <Button Content="Roll a Dice" Height="23" HorizontalAlignment="Left" Margin="194,151,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
        <Image Height="72" HorizontalAlignment="Left" Margin="195,56,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Top" Width="74" />
    </Grid>


</Page>

Answer 1

Try

using System.Windows.Media.Imaging.BitmapImage;

Instead of

using BitmapImage;

An easier way is to let Visual Studio do it for you : Right click on BitmapImage in your code -> resolve, and select the right namespace (there is generaly only one)

For the xaml, let Visual studio do it for you too, or :

<Page ...
    xmlns:local="clr-namespace:System.Windows;assembly=DiceRoll"
/>