    

<html>
<body>

<form method="post" action="demo_aspnet_customvalidator.aspx" id="ctl00">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTQzNjg3NTMyMWRkQxdC1AU9AEt1+sRYXFAuGZ0hQmD6WRqlr8MZRnLsEnw=" />

<input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="8806DBC6" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEdAANGu6KixyFbXzLi7/PgFhThscfOVKgi+tKUa7rIRxwoneKvLNdlnDJuHW3p+9jPAN9PqSQ/OLwNvQ3Tuhyl1NKb/GntZrw3kmm5acRnPntfwQ==" />
<span>请输入用户名：</span>
<input name="txt1" type="text" id="txt1" />
<input type="submit" name="ctl02" value="提交" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl02&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" />
<br />
<span id="mess"></span>
<br />
&nbsp;
</form>

</body>
</html>