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CompareValidator Control

Posted on 2005-03-27
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Last Modified: 2008-03-10
does anyone have any suggestions on how i can have the CompareValidator Control check for an integer value and also accept an empty textbox?

the two seem to conflict and, if the textbox is left empty, i get an error message saying the value is an incorrect format (because it's trying to associate an empty string to an integer).




dim intListingMLS as integer = trim(cInt(txtListingMLS.text))
      

<asp:comparevalidator
                  id="cvListingMLS"
                  runat="server"
                  Name="cvListingMLS"
                  ControlToValidate="txtListingMLS"
                  ErrorMessage="Listing MLS must be a number."
                  display="Dynamic"
                  Operator="DataTypeCheck"
                  Type=Integer>*</asp:comparevalidator>
            (Optional)<br>
            <strong>MLS Number:</strong> (max. 5 characters)<br>
            <asp:TextBox ID="txtListingMLS" Runat="server" MaxLength="6"/>

thanks all.
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Question by:vbnewbie01
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2 Comments
 
LVL 7

Accepted Solution

by:
ayha1999 earned 400 total points
ID: 13644498
Hi  vbnewbie01,

Use RangeValidator instead of compareValidator this will accept empty too but when u enter something it check for integer.

<asp:rangevalidator id="ValMLS" runat="server" ErrorMessage="Your message here." ControlToValidate="txtListingMLS" MinimumValue="1" MaximumValue="999" Type="Integer">*</asp:rangevalidator>

hope this helps.

ayha
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Author Comment

by:vbnewbie01
ID: 13649402
nice one.

thanks.
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