W3School TIY Editor
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<script runat="server"> Sub choose_image(Sender As Object, e As EventArgs) image1.Src = select1.Value End Sub </script> <html> <body> <form runat="server"> <select id="select1" runat="server"> <option value="/i/eg_smile.gif">笑脸</option> <option value="/i/eg_bulbon.gif">灯泡</option> <option value="/i/eg_mouse.jpg">鼠标</option> </select> <input type="submit" runat="server" value="显示图像" OnServerClick="choose_image"> <br /><br /> <img id="image1" src="/i/eg_smile.gif" runat="server" /> </form> </body> </html>