Validate Mobile Number with 10 Digits in ASP.Net


Here is the code for validating textbox for 10 digit mobile number.

.ASPX File:

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br\>
    <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" 
      ControlToValidate="TextBox1" ErrorMessage="RegularExpressionValidator" 
    ValidationExpression="[0-9]{10}"></asp:RegularExpressionValidator>

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