

<html>
<body>

<form method="post" action="demo_aspnet_label.aspx" id="ctl00">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTczMTE0NTI3OWRkNAuT/ZIfr6ulbYO8o+Yo+kTWtmVWeqHIoOSkvCmlCZs=" />

<input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="33131705" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEdAAOQ9OWsKQyYewl/wJhCGR1SscfOVKgi+tKUa7rIRxwonfXP3t7nFw1/a6i4TwISb2eDpPz58zDHXt330Tomi5X135fpPm4jS3TIoe2rOeDRFQ==" />
请输入文本：
<input name="txt1" type="text" id="txt1" />
<input type="submit" name="b1" value="复制到 Label" id="b1" />
<p><span id="label1"></span></p>
</form>

</body>
</html>