

<html>
<body>

<form method="post" action="demo_aspnet_htmlbutton.aspx" id="ctl00">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE1MDY1ODQ4MjJkZJt1Omruonn8HJvIr4A3E6IoynCC49MJpTV3UXTXssTI" />

<input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="51D2F473" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEdAAOIxypUlRa6uaIgPTF298ul9c/e3ucXDX9rqLhPAhJvZ63XqfZ55D5Qa6X3sogbWczw0Gp4RSzJGwc+mCztPm7eBHpOT1PVJrCFgARUqVrdZA==" />
<button onclick="__doPostBack('b1','')" id="b1" style="background-color:#e6e6fa;
height=25;width:100">蓝色按钮</button>
<button onclick="__doPostBack('b2','')" id="b2" style="background-color:#fff0f5;
height=25;width:100">粉色按钮</button>
<p id="p1"></p>
</form>

</body>
</html>