public static void Main()
@"<TD class=texte width=""50%"">
<DIV align=right>Name :<B> </B></DIV>
<INPUT class=box value=John maxLength=16 size=16 name=user_name>
<INPUT class=box value=Tony maxLength=16 size=16 name=user_name>
<INPUT class=box value=Jams maxLength=16 size=16 name=user_name>
var htmlDoc = new HtmlDocument();
string name = htmlDoc.DocumentNode
.SelectSingleNode("//td/input")
.Attributes["value"].Value;