How do i restrict textbox accept only numerics & length upto 10

<asp:TextBox ID="TextBox1" MaxLength="10" runat="server"></asp:TextBox>
                   <asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="TextBox1"
                       ValidationExpression="^(0|[1-9][0-9]*)$" runat="server" ErrorMessage="Please Enter Only Numerics"
                       ForeColor="Red"></asp:RegularExpressionValidator>