c# - Finding a domain name ending with worldpay.com or rbsworldpay.com from Dns.GetHostEntry -

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can 1 please me find domain name ending worldpay.com or rbsworldpay.com 

iphostentry entry = dns.gethostentry(givenip);  var hostname = entry.hostname.tolower();

now want make sure hostname ends worldpay.com or rbsworldpay.com , things else want throw exception.

can 1 please help.

even regular expression check should do?

thanks

try code:

if(hostname.endswith("worldpay.com")||hostname.endswith("rbsworldpay.com") {    throw new exception("wrong host"); }

it throw new exception when hostname ends worldpay.com or rbsworldpay.com


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