Create thumb nail in diffrent sizes

Copy past below code in  .aspx page 


<form id="form1" runat="server">
    <div>
        <asp:Label ID="labelMessage" runat="server" Text="Browse Image:" ForeColor="navy" Width="220"></asp:Label>
        <asp:FileUpload ID="FileUpload1" runat="server" />
        <asp:Button ID="Upload" runat="server" Text="Upload" OnClick="Upload_Click" />
    </div>

    <div>
        <asp:Label ID="label1" runat="server" Text="Normal Image (Full size): " ForeColor="navy" Width="220"></asp:Label>
        <asp:Image ID="NormalImage" runat="server" />
    </div>

    <div>
        <asp:Label ID="label2" runat="server" Text="Thumbnail Small Image (50x50)px: " ForeColor="navy" Width="220"></asp:Label>
        <asp:Image ID="ThumbnailImageS" runat="server" />
    </div>

    <div>
        <asp:Label ID="label3" runat="server" Text="Thumbnail Large Image (100x100)px: "
ForeColor="navy" Width="220"></asp:Label>
        <asp:Image ID="ThumbnailImageM" runat="server" />
    </div>
</form>

Create  1 main  folder  for images

1.   Image

Create  2 sub folders to above "image "  folder

1.  S  (for small images )
2. L   (for for big images.


Copy past the below code in   .aspx.cs   page.

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    protected void Upload_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFile)
        {
            FileUpload1.SaveAs(MapPath("~/Image/" + FileUpload1.FileName));
            System.Drawing.Image img1 = System.Drawing.Image.FromFile(MapPath("~/image/") + FileUpload1.FileName);

            System.Drawing.Image bmp1 = img1.GetThumbnailImage(50, 50, null, IntPtr.Zero);
            bmp1.Save(MapPath("~/thumbnail/S/") + FileUpload1.FileName);
            System.Drawing.Image bmp2 = img1.GetThumbnailImage(100, 100, null, IntPtr.Zero);
            bmp2.Save(MapPath("~/thumbnail/L/") + FileUpload1.FileName);
            NormalImage.ImageUrl = "~/Image/" + FileUpload1.FileName;
            ThumbnailImageS.ImageUrl = "~/thumbnail/S/" + FileUpload1.FileName;
            ThumbnailImageM.ImageUrl = "~/thumbnail/L/" + FileUpload1.FileName;
        }
    }
}