将Button置为Enabled=False 后再置为true后引发的问题
我的代码如下：

<form id= "form1 " runat= "server ">

<asp:TextBox ID= "TextBox1 " runat= "server "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RequiredFieldValidator1 " runat= "server " ControlToValidate= "TextBox1 "
ErrorMessage= "不能为空 "> </asp:RequiredFieldValidator>

<asp:button id= "btnSave "
usesubmitbehavior= "true "
Enabled= "false "
text= "Save "
runat= "server " onclick= "Button1_Click " />
<asp:button id= "btnEnabled "
usesubmitbehavior= "true "
text= "Enabled "
onclientclick= " return Enabled() "
runat= "server " onclick= "Button1_Click " />
</form>

<script type= "text/javascript ">

function Enabled()
{
document.getElementById( " <%= btnSave.ClientID%> ").disabled = false;
return false;
}

</script>

这样操作后点击Save按钮后验证控件虽然起作用，但是刷新了页面，走了一遍后台代码，我想一定是document.getElementById( " <%= btnSave.ClientID%> ").disabled = false;没有将btnSave的状态完全恢复，该怎么解决，请高手帮忙


[解决办法]
如果后台disable设为False。到前台这个按钮就已经不存在了。你再想用脚本让display=True是不可能的，会提示 '对象不存在 '
关于True和False
要么,都用后台控制
要么，都用前台控制