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Is this a proper RegularExpressionValidator for ONLY Numeric values and Dashes: ValidationExpression="/(^[0-9]+([-][0-9]+)$)/"

In an aspx file for an ASP.Net application, is this a proper RegularExpressionValidator for verifying only Numeric values and Dashes:

ValidationExpression="/(^[0-9]+([-]*[0-9]+)*$)/"

The acceptable values are:

624-018867-0
734031514-0
004-110077
107671
010115018

<tr>
<td align="left" width="50%" style="font-family: Arial, Helvetica, sans-serif; font-size: small; font-weight: bold;
font-style: normal; color: #00356A; " class="auto-style1" >Account Numb:
<asp:TextBox ID="txtAccntnum" Maxlength="15" runat="server" style="margin-left: 0px;text-align: left;" Width="15%" AutoPostBack="true" ></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidatorAccount" runat="server"
ErrorMessage="Account Invalid. Enter numbers and hyphens."
ControlToValidate="txtAccntnum"
ValidationExpression="/(^[0-9]+([-]*[0-9]+)*$)/">
</asp:RegularExpressionValidator>
</td>
</tr>

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Pawan Kumar

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Terry Woods

Yes, your description is correct.

It requires at least one digit

It allows hyphen characters, but even though multiple hyphen characters are allowed (even in a row like 1---23 ) there must always be at least one digit after them

Is this a proper RegularExpressionValidator for ONLY Numeric values and Dashes: ValidationExpression=&quot;/(^[0-9]+([-]*[0-9]+)*$)/&quot;

Is this a proper RegularExpressionValidator for ONLY Numeric values and Dashes: ValidationExpression="/(^[0-9]+([-][0-9]+)$)/"