XAML C# Resources - How to add a list of dynamically based Resources Image in a folder

Question

I’m making a FlipView using MahApps.Metro.

I have a list of images that would be passed to this flipview. It works, but I’m making them add dynamically in a way that I think is incorrect:

    <Image x:Key="Fdl1" Source="Resources/Layouts/1.bmp" />
    <Image x:Key="Fdl2" Source="Resources/Layouts/2.bmp" />
    <Image x:Key="Fdl3" Source="Resources/Layouts/3.bmp" />
    <Image x:Key="Fdl4" Source="Resources/Layouts/4.bmp" />
    <Image x:Key="Fdl5" Source="Resources/Layouts/5.bmp" />
    <Image x:Key="Fdl6" Source="Resources/Layouts/6.bmp" />
    <Image x:Key="Fdl7" Source="Resources/Layouts/7.bmp" />
    <Image x:Key="Fdl8" Source="Resources/Layouts/8.bmp" />
    <Image x:Key="Fdl9" Source="Resources/Layouts/9.bmp" />
    <Image x:Key="Fdl10" Source="Resources/Layouts/10.bmp" />
    <Image x:Key="Fdl11" Source="Resources/Layouts/11.bmp" />
    <Image x:Key="Fdl12" Source="Resources/Layouts/12.bmp" />
    <Image x:Key="Fdl13" Source="Resources/Layouts/13.bmp" />
    <Image x:Key="Fdl14" Source="Resources/Layouts/14.bmp" />
    <Image x:Key="Fdl15" Source="Resources/Layouts/15.bmp" />
    <Image x:Key="Fdl16" Source="Resources/Layouts/16.bmp" />

Look at Key having a sequential numerical pattern. After this, to access them and include in Flipview dynamically in the Behind code, I make a new puppy:

for (int i = 1; i <= FACTORY_IMG_TOTAL_RESOURCES; i++)
        {
            VisualBrush vb = new VisualBrush();
            vb.Visual = (Visual)this.Resources["Fdl" + i]; // esta é a parte que 
                                                           // me escondo debaixo da mesa
            Rectangle rect = new Rectangle();
            rect.Width = 300;
            rect.Height = 188.51;
            rect.Fill = vb;
            Grid g = new Grid();
            g.Children.Add(rect);
            FpImg.Items.Add(g);
        }

As you can see, if I delete one of the images it should already burst Exception by not existing. I wanted to make it more pliable. I imagine something like when I add a new image in the Resources/Layouts folder XAML already have a list of resources based on that folder, so consequently this new image will also be there. But I don’t know how to create a list of resources or something like that. And in the CodeBehind I wish I could create a foreach to fetch all these images. Being a collection, this should be much easier.

It will be great for my learning, because this same problem I’m having in some other cases.