Thumbnail Generation in ASP.NET using C#

Can someone tell me how to generate thumbnnails in ASP.NET using C#. I want the thumbnail to be generated of particular width and height of the photo uploaded of anysize.

Can anybody help me in doing that?

try looking at

System.Drawing.Drawing2D
System.Drawing.Imaging

this article may also help:

http://www.eggheadcafe.com/articles/20030515.asp

Const THUMB_WIDER As Int32 = 90 ' can be dynamic value with parameters
Const COMPRESSION_QUALITY As Int32 = 90 ' can be dynamic


Public Sub SaveThumbSize(ByVal sSource As String, ByVal sDestination As String)
imgSrc = New Bitmap(sSource)
Dim ratio As Double
If imgSrc.Width > imgSrc.Height Then
ratio = THUMB_WIDER / imgSrc.Width
imgDstW = THUMB_WIDER
imgDstH = CInt(imgSrc.Height * ratio)
Else
ratio = THUMB_WIDER / imgSrc.Height
imgDstH = THUMB_WIDER
imgDstW = CInt(imgSrc.Width * ratio)
End If
imgDst = New Bitmap(imgSrc, imgDstW, imgDstH)
SaveImage(imgDst, sDestination, COMPRESSION_QUALITY)

imgDst.Dispose()
imgSrc.Dispose()
imgDst = Nothing
imgSrc = Nothing
End Sub

Public Sub SaveImage(ByRef img As Image, ByVal dest As String, ByVal compression As Integer)
Dim EncoderParams As New EncoderParameters(1)
Try
EncoderParams.Param(0) = New EncoderParameter(Encoder.Quality, compression)
img.Save(dest, GetEncoderInfo, EncoderParams)
Catch ex As Exception
'img.Save(dest)
End Try
EncoderParams.Dispose()
EncoderParams = Nothing
End Sub

Private Function GetEncoderInfo() As ImageCodecInfo
Dim encoderReturn As ImageCodecInfo = Nothing
Dim encoders As ImageCodecInfo() = ImageCodecInfo.GetImageEncoders
Dim encoder As ImageCodecInfo
For Each encoder In encoders
If encoder.MimeType = "image/jpeg" Then
encoderReturn = encoder
End If
Next
encoders = Nothing
Return encoderReturn
End Function

========================
http://www.busyphoto.com
http://mobile.busyphoto.com
========================

This can be done by using an object of System.Drawing.Image