dynamic generate textbox and post data to controller in mvc3

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MVC3

hi friend;

I am new in mvc3.I am creating web application using aspx. now i have created view dynamically and i want to set those data in database,but i don't no how to post dynamic generated field to controller.in my database i have tables

like:

epr_field_master{field_id,field_name,group_id}
 epr_group_master{group_id,group_name}

using this create view like this:

<% IEnumerable<ProjectManagementSystem.Models.Eprfield> field = Model.eprfield; %>
<% IEnumerable<ProjectManagementSystem.Models.Eprgroup> group = Model.eprgroup; %>
<% using ( Html.BeginForm("Saveepr","EPR") ){ %>
<table>
<tr>
<td>Performance factor</td>
<td>Area Covered</td>
<td>%</td>
<td><%: Model.user_name %></td>
</tr>
<tr>
<td></td>
<td >
Overall Performance
</td>
<td></td>
<td><%: Model.user_name %></td>
</tr>
<tr>
<td></td>
<td>Previous Score</td>
<td></td>
<td><%: Model.user_name %></td>
</tr>
<tr>
<td></td>
<td>Change</td>
<td></td>
<td><%: Model.user_name %></td>
</tr>
  <% foreach (var i in group)
                {%>
                <tr><td><%: i.group_name %></td><td></td><td><%: i.group_weight %></td> </tr>
                <% foreach (var j in field)
                   {
                       if (i.group_id == j.epr_group_id)
                       {
                         %>
                         <tr>
                         <td></td>
                         <td><%: j.field_name %></td>
                           <td></td>
                             <td>
                             <%: Html.TextBoxFor(model=>model.field_id) %>
                             </td>
                         </tr>
                         <%
                       }

                 } %>

         <%
                }
                 %>

</table>

Now I want to post text field value to controller but how can i post data? so please tell me how to create model file or
get data in controller any other way.