特別說明：1.一個Button要對頁面的多個控件進行驗證，則需要設置button和其它受控控件的ValidationGroup屬性
aspx頁面實例：
<tr class="h">
<td class="tdr">
起始日:
</td>
<td class="tdl">
<asp:TextBox ID="tb_fromdate" runat="server" CssClass="AlignLeftBc" ValidationGroup="SaveInsert"></asp:TextBox>
<ccl:CalendarExtender ID="tb_fromdate_CalendarExtender" runat="server" Format="yyyy/MM/dd HH:mm:ss"
TargetControlID="tb_fromdate">
</ccl:CalendarExtender>
<asp:RequiredFieldValidator ID="Rfvfrom" runat="server" ControlToValidate="tb_fromdate"
ErrorMessage="不能為空！" ValidationGroup="SaveInsert">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr class="h">
<td class="tdr">
截止日:
</td>
<td class="tdl">
<asp:TextBox ID="tb_todate" runat="server" CssClass="AlignLeftBc" ValidationGroup="SaveInsert"></asp:TextBox>
<ccl:CalendarExtender ID="tb_todate_CalendarExtender" runat="server" Format="yyyy/MM/dd HH:mm:ss"
TargetControlID="tb_todate">
</ccl:CalendarExtender>
<asp:RequiredFieldValidator ID="Rfvto" runat="server" ControlToValidate="tb_todate"
ErrorMessage="不能為空！" ValidationGroup="SaveInsert">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr style="height: 30px">
<td align="center" colspan="2" valign="middle">
<asp:LinkButton ID="lbt_Sure" runat="server" Font-Underline="false" OnClick="lbt_Sure_Click"
ValidationGroup="SaveInsert" OnClientClick="return ConfirmMe()">
<img alt="保存" src="../../../images/Save01.gif" style=" border:none" />
</asp:LinkButton>
<asp:LinkButton ID="lbt_close" runat="server" Font-Underline="false" OnClick="lbt_close_Click">
<img alt="關閉" src="../../../images/Cancel01e.gif" style=" border:None" />
</asp:LinkButton>
</td>
</tr>
後台代碼：
protected void lbt_Sure_Click( object sender, EventArgs e)
{
if (!!Page.IsValid)
{
//通過Page.IsValid來取得頁面是否通過驗證
}
}