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Editorial Team
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Asked: 2026-05-16T15:48:39+00:00

I am using a CompareValidator to check user input on one of my forms

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I am using a CompareValidator to check user input on one of my forms but for some reason it will not allow me to enter a dollar sign.

According to MSDN the currency data type in the compare validator allows:

A decimal data type that can contain
currency symbols.

I am using the control below to validate:

<asp:CompareValidator ID="vld_Cash" runat="server" ControlToValidate="CashTextBox" Type="Currency" Operator="DataTypeCheck" ValidationGroup="vld_Update" ErrorMessage="The value entered for 'Cash' must be in a number format.  Do NOT include dollar signs.  Examples: 500 or 500.00" />

I also added the following to my web.config just to be sure:

<globalization culture="en-US" uiCulture="en-US"/>

But it still says any input with a $ in it is invalid. Am I missing something here?

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1 Answer

  1. Editorial Team

    The last comment in this thread shows why and gives you some ideas:

    Currency Validator

    An article dedicated to this:

    ASP.Net: Validating a TextBox with a Dollar Sign (suggests using a RegularExpressionValidator).

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