email validation in textbox

use this regular expression

\b[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

or use javascript validation for e-mail
http://www.dotnetfunda.com/codes/code1859-email-validation-using-javascript.aspx
http://www.dotnetfunda.com/codes/code220-javascript-email-validation.aspx

For regular expression
http://www.dotnetfunda.com/forums/thread5423-how-to-validate-the-email-validation-using-regular-expression.aspx

Thanks,
Sanjay

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

<form name="myForm" action="demo_form.asp" onsubmit="return validateForm();" method="post">

Email: <input type="text" name="email">

<input type="submit" value="Submit">

</form>

function validateForm()

{

var x=document.forms["myForm"]["email"].value;

var atpos=x.indexOf("@");

var dotpos=x.lastIndexOf(".");

if (atpos<1 || dotpos<atpos+2 || dotpos+2>=x.length)

  {

  alert("Not a valid e-mail address");

  return false;

  }

}

HOPE THIS WILL HELP

REGARDS

sriram

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

hi,

You just use the Regularexpressionvalidator to check the email format or not

refer this link for example

http://asp-net-example.blogspot.in/2009/02/aspnet-regularexpressionvalidator.html

Regards
Kavi.n

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

Hi,
You can use the below regex to match the email pattern.

string MatchPattern = @"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@"
+ @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\."
+ @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+ @"([a-zA-Z]+[\w-]+\.)+[a-zA-Z]{2,4})$";

if ((txt1.text == null) || !(Regex.IsMatch(txt1.text, MatchPattern )))

{

MessageWindow msgwindow= new MessageWindow("Invalid eMail ID.")
msgwindow.Show();

}


I hope it helps.

With best rgds,
Pavan

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

http://www.velocityreviews.com/forums/t586102-how-to-give-email-validation-inside-a-textbox-in-c-windows-application-vs-2005-a.html

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

http://stackoverflow.com/questions/7635533/validate-email-address-textbox-using-javascript

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

<asp:TextBox ID="txtEmail" runat="server" CssClass="text"> </asp:TextBox>

<asp:RegularExpressionValidator ID="regValidator" runat="server" ErrorMessage="Email is not vaild." ForeColor="Red" ControlToValidate="txtEmail" ValidationExpression="^\s*(([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+([;.](([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+)*\s*$" ValidationGroup="register">Email is not vaild.</asp:RegularExpressionValidator>

Regards
Muralidoss M

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator

Hi check this link

http://www.dotnetpools.com/Article/ArticleDetiail/?articleId=98&title=Validate%20Email%20Address%20Using%20Regular%20Expression%20In%20Asp.Net

Klbaiju, if this helps please login to Mark As Answer. | Alert Moderator