C# - How To Display A List Of Images From A Folder On Hard Drive

I am trying to make a simple photo gallery website. Using ASP.NET and C#. Right now I don't have a server set up but I am just using the development one that Visual Studio Starts when you make a website project and run it.

I have a folder on my hard drive that contains an unknown number of images. I want to write a piece of code that will go through each image and add them to the default webpage. I have tried this code but it doesn't work. What am I doing wrong? Should I be using a ListView control or a DataView or something like that? Do I need to add a virtual directory in order to access the images? If so, how do I to that on this test server?

ALSO, how do I set the position and alignment of these pictures? For example, how would I make it so that the pictures are in a line vertically and centered on the webpage?

protected void Page_Load(object sender, EventArgs e)
{
string[] filesindirectory = Directory.GetFiles(@"C:UsersJordanDesktopWeb Images");
int i = 1;
foreach (string s in filesindirectory)
{
Image img = new Image();
img.ID = "image" + i.ToString();
img.ImageUrl = s;
img.Visible = true;
Page.Controls.Add(img);
i++;
}
}