how to validate the E-mail ID....???

Question

i want to validate the email address when the users enter the email id in the text box it validates at run time that the entered email is correct....or not?? how can i do this..??

Suthish Nair · Answer

you try like this.. asp : TextBox ID =TextBox1 runat =server ToolTip =Enter your Email here> asp : TextBox > asp : RequiredFieldValidator ID =RequiredFieldValidator1 runat =server EnableViewState =False Display =Static ControlToValidate =TextBoxEmailId ErrorMessage =Email must not be empty SetFocusOnError =True/> asp : RegularExpressionValidator ID =RegularExpressionValidator1 Display =Static runat =server EnableViewState =False ErrorMessage =Invalid Email ControlToValidate =TextBoxEmailId ValidationExpression =\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* SetFocusOnError =True/> asp : Button ID =Button1 runat =server Text =Check valid Email> asp : Button > or javascript way.. function ValidateForm() { if (document.getElementById(' ').value == ) { alert(Please provide Email ID !); document.getElementById(' ').focus(); return false; } else { if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{23})+$/.test(document.getElementById(' ').value))) { alert(The EmailId entered is not a valid Email Address. !); document.getElementById(' ').focus(); return false; } } } On Page Load Button1.Attributes.Add(onclick javascript:return ValidateForm();)