Email Validation

Question

hi! give a validation code to write email address in asp.net and not to use any validation controls. thank u.

Nila · Answer

Hi, Here is the code for validating the E-Mail Id if (newEmail.Text.Length == 0) { // No email address entered registerStatus.Text = "Enter an email." ; newEmail.Focus(); } else if (! Regex .IsMatch(newEmail.Text, @ "^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$" )) { // An invalid email format was entered registerStatus.Text = "Enter a valid email." ; newEmail.Select(0, newEmail.Text.Length); newEmail.Focus(); } Mark As Answer If it Helps.

ajay raju · Answer

Thank u for give a code of email validation.

Lalit M · Answer

You Can do using javascript /** * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/) */ function echeck(str) { var at="@" var dot="." var lat=str.indexOf(at) var lstr=str.length var ldot=str.indexOf(dot) if (str.indexOf(at)==-1){ alert("Invalid E-mail ID") return false } if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){ alert("Invalid E-mail ID") return false } if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){ alert("Invalid E-mail ID") return false } if (str.indexOf(at,(lat+1))!=-1){ alert("Invalid E-mail ID") return false } if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){ alert("Invalid E-mail ID") return false } if (str.indexOf(dot,(lat+2))==-1){ alert("Invalid E-mail ID") return false } if (str.indexOf(" ")!=-1){ alert("Invalid E-mail ID") return false } return true } function ValidateForm(){ var emailID=document.frmSample.txtEmail if ((emailID.value==null)||(emailID.value=="")){ alert("Please Enter your Email ID") emailID.focus() return false } if (echeck(emailID.value)==false){ emailID.value="" emailID.focus() return false } return true } Show here more details Show Also