checking the string

[Mairy]

how can i check the string that it has at least "@" sign for example .......@hotmail.com i must check that string starting with some text but must end with "@hotmail.com"

[MHASSANF]

try with int a = (string).IndexOf("@"); and check the value of a MHF

[Exelioindia]

Hi, By using regular expression you can able to do it. Just go through the below coading: For more details just visit this site: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag2/html/PAGHT000001.asp Regards Exelio

[Vipin Venugopal]

the best way to do email validation is by using java script. Just cut and paste the following java script. it will work fine. function emailCheck (emailStr) { var checkTLD=1; var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|in fo|pro|museum)$/; var emailPat=/^(.+)@(.+)$/; var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]"; var validChars="\[^\\s" + specialChars + "\]"; var quotedUser="(\"[^\"]*\")"; var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/; var atom=validChars + '+'; var word="(" + atom + "|" + quotedUser + ")"; var userPat=new RegExp("^" + word + "(\\." + word + ")*$"); var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$"); var matchArray=emailStr.match(emailPat); if (matchArray==null) { alert("Email address seems incorrect (check @ and .'s)"); return false; } var user=matchArray[1]; var domain=matchArray[2]; for (i=0; i<user.length; i++) { if (user.charCodeAt(i)>127) { alert("Ths username contains invalid characters."); return false; } } for (i=0; i<domain.length; i++) { if (domain.charCodeAt(i)>127) { alert("Ths domain name contains invalid characters."); return false; } } if (user.match(userPat)==null) { alert("The username doesn't seem to be valid."); return false; } var IPArray=domain.match(ipDomainPat); if (IPArray!=null) { for (var i=1;i<=4;i++) { if (IPArray[i]>255) { alert("Destination IP address is invalid!"); return false; } } return true; } var atomPat=new RegExp("^" + atom + "$"); var domArr=domain.split("."); var len=domArr.length; for (i=0;i<len;i++) { if (domArr[i].search(atomPat)==-1) { alert("The domain name does not seem to be valid."); return false; } } if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) { alert("The address must end in a well-known domain or two letter " + "country."); return false; } if (len<2) { alert("This address is missing a hostname!"); return false; } return true; }

Your Email Address:

Vipin

[J4amieC]

That is probably the most over-bloated way of checking an email address ever...considering javascript supports regular expressions. String mashing to determine email validity is not a solution in todays programming world! 1!

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