quick asp.net question

[marra]

Hi, i'm currently developing a website in asp.net to control a smart home. I've managed to program asp buttons to do what I want but they are using the standard grey buttons with text. What I want to do is have them execute the same code when clicked but have an image instead of the button. I've included some sample code for a buttons below. Can't for the life of me work out where I would put the href. Any one?

<form id="Form1" runat="server">
  <asp:Button id="btnSayHello" runat="server" text="Say Hello" onclick="btnSayHello_Click" />
 </form>

 

[marra]

Ah yes that would seem like an obvious choice. Thanks for the help i'll give it a go