demo_htmlimage2 在线工具
<html> <body> <form runat="server"> <select id="select1" runat="server"> <option value="smiley.gif">Smiley</option> <option value="angry.gif">Angry</option> <option value="stickman.gif">Stickman</option> </select> <input type="submit" runat="server" value="Display image" OnServerClick="choose_image"> <img id="image1" src="/statics/images/course/smiley.gif" runat="server" width="32" height="32" /> </form> </body> </html>