c# - Conditionally change CSS class in Razor view

Question

I need to change the CSS class of the <div> tag with the 'forumChild' class. It has to change every 3 loops of the foreach loop.

Is there a way to do this from within the control?

<div class="Forum">
    <p>The Forum</p>

            @foreach (var item in Model)
            {               
                <div class="ForumChild">

                    <img src="@item.Blog.Image.img_path" alt="Not Found" />

                    <br />
                            @foreach (var comment in item.Blog.comment)
                            {

                                var db = new ACapture.Models.ACaptureDB();

                                var Name = from p in db.Profile.AsEnumerable()
                                           where (p.AccountID == comment.AccountID)
                                           select p;                            
                            <section>
                                    <div>
                                        <a href="@Url.Action("Index", "Home")">@foreach (var y in Name)
                                                                              { @(y.FirstName + " " + y.LastName + ":");
                                                                              }</a>
                                    </div>
                                    <div>
                                        @comment.Commentation 
                                    </div>
                            </section>
                            }
                </div>                
            }
</div>

Thanks in advance

Answer 1

 @{
   int counter=0;
 }
 @foreach (var item in Model)
 { 
   counter++;
   <div class="@(counter<=3 ? "classRed":"classBlue")">
       <img src="@item.Blog.Image.img_path" alt="Not Found" />
       //other markup also here

   </div>  
    if (counter == 6)
    {
        counter = 0;
    }

 }

Where classRed and classBlue are the CSS classes