finding index of accordion menu in asp.net mvc and Razor view

Question

Is there any body can help me to find the index of accordion menu in asp.net mvc project with Razor view.
I fill my Index page with local data (a model not from database) then clicking on a submenu and finally pass the index of accordion menu record and submenus(radiobutton selected index) to the action result
@默 IEnumerable<Menu.Models.Room>
@using (Html.BeginForm("Index", "Home", FormMethod.Post))
{
int i = 1;
foreach (var item in Model)
{
<div id="proboxmain" class="proboxmain">
<div class="proboxtitle" onclick="runprobox(@i)">
@azzedinehtmlsql .DisplayFor(Modelitem => item.RoomName) |
@azzedinehtmlsql .DisplayFor(Modelitem => item.ReservationNumber) |
@azzedinehtmlsql .DisplayFor(Modelitem => item.FullName)

            </div>  
            <div id="@i" class="proboxcontent">  
                <fieldset style="height: inherit;">  
                    <div id="div_Q1">  
                        <div id="tb_Q">  
                            <div id="Q1_text" class="shiny-html-output">  
                            </div>  
                        </div>  
                        <div id="tb_Qt">  
                            <div id="Q1" class="shiny-html-output">  
                            </div>  
                        </div>  
                        <div id="div_ans">  
                            <div id="select" class="form-group shiny-input-radiogroup shiny-input-container shiny-input-container-inline">  
                                <div class="shiny-options-group">  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount1 />  
                                        @Html.DisplayFor(Modelitem => item.Amount1)  
                                    </label>  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount2 />  
                                        @Html.DisplayFor(Modelitem => item.Amount2)  
                                    </label>  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount3 />  
                                        @Html.DisplayFor(Modelitem => item.Amount3)  
                                    </label>  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount4 />  
                                        @Html.DisplayFor(Modelitem => item.Amount4)  
                                    </label>  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount5 />  
                                        @Html.DisplayFor(Modelitem => item.Amount5)  
                                    </label>  
                                    <label class="radio-inline">  
                                        <input type="radio" name="select" value=@item.Amount6 />  
                                        @Html.DisplayFor(Modelitem => item.Amount6)  
                                    </label>  
                                </div>  
                            </div>  
                        </div>  
                    </div>  
                </fieldset>  
                <fieldset style="height: 30px;">  
                    <input type="submit" value="pay" class="jj"/>  
                </fieldset>  
            </div>  
        </div>  
        i++;  
    }  

}