asp.net generate thumbnails

Asp.net| thumbnails when we want to upload images, we often need to generate thumbnails, we used to use a Third-party control to complete. In ASP.net, use the following methods to easily handle
<script language= "VB" runat= "Server" >
Sub Page_Load (sender as Object, E as EventArgs)

Dim Image,anewimage as System.Drawing.Image
Dim width,height,newwidth,newheight As Integer
Dim CALLB as System.Drawing.Image.GetThumbnailImageAbort

' Generate thumbnails
Image=system.drawing.image.fromfile (Server.MapPath ("classpic/" + "rs1.jpg"))
Width=image. Width
Height=image.height
If Width>height Then
newwidth=110
Newheight=image.height/image. Width*newwidth
Else
newheight=110
Newwidth=image. Width/image.height*newheight
End If

Anewimage=image. Getthumbnailimage (Newwidth,newheight,callb,new system.intptr ())
Anewimage.save (Server.MapPath ("smallpic/" + "Rs1.gif"))
Image. Dispose ()

End Sub
</script>