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Editorial Team
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Asked: 2026-06-08T11:55:46+00:00

I’m uaing following regular expression for validating decimal or numeric (18,3) numbers, it does

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I’m uaing following regular expression for validating decimal or numeric (18,3) numbers,
it does disallow users from entering more than 1 decimal points and all that

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="Invalid" ControlToValidate="txtqty"  ValidationExpression="^[-+]?[0-9]*\.?[0-9]*([?[0-9]+)?$" ValidationGroup="save"></asp:RegularExpressionValidator>

but i also want to disallow users from entering any value equal to 0 like the following eg:

0.00,
0000.00,
00.0,
0…

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1 Answer

  1. Editorial Team

    I think the problem is that you are using one validator to perform more than one task

    Divide your problem:

    • Validate the format

    • Validate specific values

    Use a simple CompareValidator in addition to your RegularExpressionValidator

    <asp:CompareValidator ErrorMessage="Value must be grater than 0" ControlToValidate="TextBox1"
    runat="server" Operator="NotEqual" Type="Double" ValueToCompare="0" />
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