<img src="ThumbnailHandler.ashx?VFilePath=../image/Myimage.jpg & Height=230 & Width=340" alt="Thumbnailimage" />
<asp:Image id="Image1" runat="server" ImageUrl="ThumbnailHandler.ashx?VFilePath=~/Images/Myimage.jpg & Height=230 & Width=340" AlternateText="Thumbnailimage" />
<asp:Image id="Image1" runat="server" ImageUrl=
"ThumbnailHandler.ashx?VFilePath=~/Images/Myimage.jpg
& Height=230 & Width=340" AlternateText="Thumbnailimage" />