Preview image file before upload to webserver Ref: http://blog.raminassar.com/2011/07/05/preview-image-file-before-upload-to-webserver/#.UZcVs6JHLRJ Muddsar Khan http://www.aspsnippets.com/Articles/Display-image-after-upload-without-page-refresh-or-postback-using-ASP.Net-AsyncFileUpload-Control.aspx You can use javascript to preview the selected image before uploading it to the server. < html xmlns ="http://www.w3.org/1999/xhtml" > < head id ="Head1" runat ="server" > < title > Main Page </ title > < script type ="text/javascript" > function FileUpload1_onchange(oFileUpload1) { document.getElementById( 'Image1' ).src = oFileUpload1.value ; } </ script > </ head > < body > < form id ="form1" runat ="server" > < asp:FileUpload