Regular Expression Validation

[dougancil]

I have the following three textboxes:

asp:TextBox ID="exceptiondateInput" runat="server" Width="130px" Height="23px"></asp:TextBox>
        &nbsp; <span class="style1">*</span> Exception Date &nbsp;<asp:RegularExpressionValidator 
            ID="DateValidator" runat="server" 
            ControlToValidate="exceptiondateInput"
            ValidationExpression="^\d{1,2}\/\d{1,2}\/\d{4}$" 
            ErrorMessage="Please Enter the Date Correctly"></asp:RegularExpressionValidator>
        <br />
        <br />
        <br />
        <asp:TextBox ID="starttimeInput" runat="server" Width="130px" Height="23px"></asp:TextBox>
        &nbsp; <span class="style1">*</span> Start Time &nbsp;<asp:RegularExpressionValidator
            ValidationExpression="^((([0]?[1-9]|1[0-2])(:|\.)[0-5][0-9]((:|\.)[0-5][0-9])?( )?(AM|am|aM|Am|PM|pm|pM|Pm))|(([0]?[0-9]|1[0-9]|2[0-3])(:|\.)[0-5][0-9]((:|\.)[0-5][0-9])?))$"
            ID="StartTimeValidator" runat="server" 
            ErrorMessage="You Must Supply an Start Time" 
            ControlToValidate="starttimeInput"></asp:RegularExpressionValidator><br />
        <br />
        <br />
        <asp:TextBox ID="endtimeInput" runat="server" Width="130px" Height="23px"></asp:TextBox>
        &nbsp; <span class="style1">*</span> End Time &nbsp;<asp:RegularExpressionValidator 
            ID="EndTimeValidator" runat="server" 
            ValidationExpression="^((([0]?[1-9]|1[0-2])(:|\.)[0-5][0-9]((:|\.)[0-5][0-9])?( )?(AM|am|aM|Am|PM|pm|pM|Pm))|(([0]?[0-9]|1[0-9]|2[0-3])(:|\.)[0-5][0-9]((:|\.)[0-5][0-9])?))$"
            ErrorMessage="You Must Supply an End Time" 
 
 

and when I debug the page, if these textboxes are empty, I'm not getting an error back, I only get an error if I enter information that's in an incorrect format. Can anyone suggest why it's not giving me an error if the box is blank, when it should give me an error.

Thanks

Doug

[mzmishra]

All validation controls, except the RequiredFieldValidator control, will pass validation if the input control pecified by the ControlToValidate property contains no text.
Use both requiredfield and regular expression validators

[dougancil]

Mz Mishra,

So then a question would be how is the best way to do that so that the error messages still are presented in a way that they don't clutter the page. Would I use a validationSummary? or can it be done the way that I have it?