how to use mobile validation in C#

See more:

C#

ASP.NET

Hello, Iam using a textbox which have mobile number,so I need to validate the number ,and I use requied field validator and regular expression validator ,also I use the espression(up to 10 digits) ,but the problem is if the mobile number have 10 zeros(0000000000) regular expression will not validate ,plz help to solve this..its urgent....
here is the code

<td>
                                           <asp:Label ID="lblMobile" runat="server" Text="Mobile Number" Font-Bold="True" ForeColor="Black"></asp:Label>
                                       </td>
                                       <td>
                                           <asp:TextBox runat="server" ID="txtMobileNumber" MaxLength="10" OnCopy="return false"
                                               OnPaste="return false" CssClass="popuptxtbox" onkeypress="return isNumberKey(event);"
                                               onkeyDown="checkTextAreaMaxLength(this,event,'11');" onblur="return valid(this,'restric_spec');"></asp:TextBox>
                                       </td>
                                       <td>
                                           <asp:RequiredFieldValidator ID="rfvMobileNumber" runat="server" ErrorMessage="*"
                                               ControlToValidate="txtMobileNumber" SetFocusOnError="true"></asp:RequiredFieldValidator>
                                       </td>
                                       <td>
                                           <asp:RegularExpressionValidator ID="rfvMobile" runat="server" ControlToValidate="txtMobileNumber"
                                               ErrorMessage="Minimum 10 digits" SetFocusOnError="True" ValidationExpression="^((\+)?(\d{2}[-]))?(\d{10}){1}?$"></asp:RegularExpressionValidator>
                                       </td>