Regular Expression in ASP.Net

RegularExpressionValidator for Email ID: 

Here I have shown a textbox with ID="txtEmail". Regular Expression validator for Email ID:

 
                                    ValidationGroup="vgSubmit" ForeColor="Red">
                                    ValidationGroup="vgSubmit" ControlToValidate="txtEmail" CssClass="requiredFieldValidateStyle"
                    ForeColor="Red" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*">



RegularExpressionValidator for U.S. Phone Number:


 (000-000-0000)
                                    ValidationGroup="vgSubmit" ForeColor="Red">
                                    ValidationGroup="vgSubmit" ControlToValidate="txtPhoneNumber" ForeColor="Red"
                    ValidationExpression="((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}">