我试图验证日期，但它不起作用。我可以纠正它吗？

问题描述：

<tr>
    <td>
        Date of Birth</td>
    <td colspan="2">
        <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
        
        
        <asp:TextBox ID="TextBox3" runat="server" ReadOnly="true">
        
        <asp:ImageButton ID="ImageButton1" runat="server" Height="25px" 

            ImageUrl="~/images/calendal.jpg" Width="25px" />
        
        <br />
        <asp:RangeValidator ID="RangeValidator1" runat="server" ErrorMessage="Invalid date" ControlToValidate="TextBox3" MaximumValue="01/01/2014" MinimumValue="01/01/1900" Type="Date">

        <asp:CalendarExtender ID="CalendarExtender1" runat="server" Format="dd/MM/yyyy" 

            PopupButtonID="ImageButton1" PopupPosition="BottomRight" 

            TargetControlID="TextBox3">
            
        
    </td>
    
</tr>

答

您的控件标签未正确关闭。请使用以下更正的代码

Your control tags are not closed properly. Please use below corrected code

  <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"></asp:ToolkitScriptManager>
<asp:TextBox ID="TextBox3" runat="server" ReadOnly="true" ></asp:TextBox>
<asp:ImageButton ID="ImageButton1" runat="server" Height="25px" ImageUrl="~/images/calendal.jpg"  Width="25px" CausesValidation="true" />
<asp:RangeValidator ID="RangeValidator1" runat="server" ErrorMessage="Invalid date" ControlToValidate="TextBox3" MaximumValue="01/01/2014" MinimumValue="01/01/1900" Type="Date" />

<asp:CalendarExtender ID="CalendarExtender1" runat="server" Format="dd/MM/yyyy"
PopupButtonID="ImageButton1" PopupPosition="BottomRight"
TargetControlID="TextBox3" />

我试图验证日期，但它不起作用。我可以纠正它吗？

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