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$linkName=trim($rs->productname);
$linkName = preg_replace('/\W+/',"-",$linkName);
$linkName = preg_replace('/_$/',"",$linkName);
$linkName=trim($rs->productname);
$linkName = preg_replace('/\W+/',"-",$linkName);
$linkName = preg_replace('/_$/',"",$linkName);
string linkName = rs.productname;
Regex rx = new Regex(@"/\w+/");
linkName = rx.Replace(linkName,"-");
rx=new Regex(@"/_$/");
linkName = rx.Replace(linkName,"");
using System.Text.RegularExpression;
linkName = rs.productname.Trim();
linkName = Regex.Replace(linkName ,"\\W+" , "-");
linkName = Regex.Replace(linkName ,"_$","");