CODEWITHSUNDEEP
regex
Nida
Nida

Reputation: 1702

use regular expression for phone no

I am using following lines of code 

      <asp:TemplateField HeaderText="Phone" SortExpression="Phone">
          <ItemTemplate>
           <asp:Label ID="lblPhone" runat="server">
              <%# Regex.Replace(Eval("Phone").ToString(), @"(\d{3})(\d{3})(\d{4})", "($1)-$2-$3") %>
            </asp:Label>
         </ItemTemplate>
       </asp:TemplateField>

It is formatting numbers like 9419002345 but not numbers like 1408-464-1680 or 463237062... Please help me in writing accurate regular expression.

Upvotes: 0

Views: 26

Answers (2)

M.S.
M.S.

Reputation: 4423

You can try this: (\d{10}) will compare 10 numbers OR 4 digits-3 digits-4 digits.

(\d{10})|(\d{4}-\d{3}-\d{4})

Adjust number of digits as per your need.

Upvotes: 1

Patrick Hofman
Patrick Hofman

Reputation: 157048

That is because your regular expression just matches when there are ten digits. Your 463237062 has only 9.

You should make the algorithm allow matching on 9 digits too, for example like this:

@"(\d{1,3})(\d{3})(\d{4})"

Upvotes: 1

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