第一：

private void Button1_Click(object sender, System.EventArgs e)
{
Response.Redirect(Request.Url.ToString());
}

　　第二：

private void Button2_Click(object sender, System.EventArgs e)
{
Response.Write("<script language=java script>window.location.href=document.URL;</script>");
}

　　第三：

private void Button3_Click(object sender, System.EventArgs e)
{
Response.AddHeader("Refresh","0");
}

　　第四：

private void Button6_Click(object sender, System.EventArgs e)
{//好像有些不对？
//Response.Write("<script language=java script>window.location.reload();</script>");
}

　　第五：

<script>
<!--

var limit="3:00"

if (document.images){
var parselimit=limit.split(":")
parselimit=parselimit[0]*60+parselimit[1]*1
}
function beginrefresh(){
if (!document.images)
return
if (parselimit==1)
window.location.reload()
else{
parselimit-=1
curmin=Math.floor(parselimit/60)
cursec=parselimit%60
if (curmin!=0)
curtime=curmin+"分"+cursec+"秒后重刷本页！"
else
curtime=cursec+"秒后重刷本页！"
window.status=curtime
setTimeout("beginrefresh()",1000)
}
}
window.onload=beginrefresh
//-->
</script>
<DIV style="Z-INDEX: 102; LEFT: 408px; POSITION: absolute; TOP: 232px" ms_positioning="text2D">
<P><FONT size="3">自动刷新页面</FONT></P>
</DIV>

　　第六：

<meta http-equiv="refresh" content="300; url=target.html">