Display Images saved in folder outside the Website Root directory in GridView ASP.Net

Without using DataTable.

HTML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Text" HeaderText="Image Name" />
        <asp:TemplateField HeaderText="Image">
            <ItemTemplate>
                <asp:Image ImageUrl='<%# Eval("Value") %>' runat="server" Width="100" Height="100" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Namespaces

using System.IO;

C#

protected void Page_Load(object sender, EventArgs e)
{
    string localPath = "C:\\Users\\Public\\Pictures\\Sample Pictures\\";
    string[] filePaths = Directory.GetFiles(localPath);
    List<ListItem> files = new List<ListItem>();
    foreach (string filePath in filePaths)
    {
        string fileName = Path.GetFileName(filePath);
        string contenttype = "image/" + Path.GetExtension(fileName).Replace(".", "");
        FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
        BinaryReader br = new BinaryReader(fs);
        Byte[] bytes = br.ReadBytes((Int32)fs.Length);
        string base64String;
        base64String = System.Convert.ToBase64String(bytes, 0, bytes.Length);
        files.Add(new ListItem(fileName, "data:" + contenttype + ";base64," + base64String));
    }
    GridView1.DataSource = files;
    GridView1.DataBind();
}

Screenshot