Getting value of html control using loop with asp.net c# -

i have following code

<div class="divnewproductsmain" style="margin: 0 34px 0 0">                         <div class="newprodtextdiv2">                             <input type="text" id="txtnewcompcode_1" runat="server" class="newprodtext2" />                         </div>                         <div class="divprodcuttotal">                             <label id="lblnewtotalrow_1" runat="server">                                 0</label>&nbsp;&#8362;                         </div>                         <div class="newprodtextdiv2">                             <input type="text" id="txtnewprice_1" runat="server" onkeyup="setamountnewprod(this.id)"                                 class="newprodtext2" />                         </div>                         <div class="newprodtextdiv2">                             <input type="text" id="txtnewamount_1" runat="server" onkeyup="setamountnewprod(this.id)"                                 class="newprodtext2" maxlength="3" />                         </div>                         <div class="newprodtextdiv">                             <input type="text" id="txtnewprodname_1" runat="server" class="newprodtext" />                         </div>                     </div> 

the controls id's run 1 10, example have txtnewcompcode_1, txtnewcompcode_2, txtnewcompcode_3 , , on until txtnewcompcode_10.

my question is, how can if possible run loop in code behined on controls , add number of row on, txtnewcompcode_ + rownumber. not make each control line of code take value. have multiple controls , write line of code take each value lot of code.

look at:

htmlagility pack

this give granular control on html passing it. once it's passed can access these objects programatically , extract whatever info want.