gistfile1.aspx

var i = 0;
foreach (var dimType in ViewData.Model.SelectedProduct.DimensionTypes)
    {
i++;
        string ddlName = String.Format("ddlDimension_{0}", dimType.Key);

		var dimensions = variations.Select(sv => sv.Dimensions.FirstOrDefault(d => d.TypeKey == dimType.Key));
		var valueList = dimensions
						 .Select(d => new { Key = d.Key, ShortValue = d.ShortValue, IsInStock = variations.Any(sv => sv.Available && sv.Dimensions.Any(sd => sd.Key == d.Key)) })
						 .Distinct()
						 .OrderBy(d => DimensionSorter.GetSortOrder(d.Key))
						 .ToList();
		if (valueList.Count > 0)
        {
			string selectedID = selectedDimensions.ContainsKey(dimType.Key) ? selectedDimensions[dimType.Key].ToString() : "";
            string style = "";
            if (dimType.Key == "SW" && !Model.SiteFeatureManager.IsFeatureEnabled(CatFootwear.Web.SiteFeature.ShowShoeWidth)) {
                style = "display: none";
            }
            %>
            
            <div class="RequiredDimension dimension <%= string.IsNullOrEmpty(style) ? "" : "heightadjustment" %> "

********** I WANT TO INSERT CLASS HERE ************
<&= i == 2 ? 'newclass' : '' %>
>
                <span class="pdp-title DimName" id="<%= ddlName + "_ShortName" %>" style="<%= style %>"><%= Html.Encode(dimType.ShortName)%>:</span>
                <input type="text" class="dimTextDisplay" id="<%= ddlName + "_Display" %>" readonly="readonly" value="" style="<%= style %>" />
                <input type="hidden" class="dimType" value="<%= dimType.ShortName%>" />
                <script type="text/javascript">
                $('.dimType:last').after('<input type="hidden" class="dimID" name="<%= ddlName %>" id="<%= ddlName %>" />');
                </script>
			
				<ul style="<%= style %>">
            <%
			
			foreach (var item in valueList){%>
               <li> <label title="<%=item.ShortValue%>" value="<%=item.Key %>" class="pdp-options <%=item.IsInStock?"valid":"outOfStock" %>" id="dimension_<%=item.Key%>">
					<input name="<%= ddlName %>" type="radio" value="<%= item.Key %>" />
					<%= item.ShortValue %>
				</label></li>
             <% } %>
             <% 
				var firstVal = valueList != null && valueList.Count() > 0 ? valueList.First() : null;		
				if (potentiallyShowEuroSizingGrid) { 
				int LowestAcceptableEuroSize = 30;
			   // now check to see if the lowest value is 30 for euro dimensions. yes, using db sorting by string here to avoid casting all to int
				int lowestDim;
				if (firstVal != null && ((int.TryParse(firstVal.ShortValue, out lowestDim) && lowestDim > LowestAcceptableEuroSize) || "IY".Contains(Model.SelectedProduct.GenericSizeType.Key))) {
		   %>
			<li><a href="<%= ResolveUrl(string.Format("~/Content/images/euro_sizes_{0}.gif", Model.SelectedProduct.GenericSizeType.Key)) %>" class="alt thickbox"><%= Html.ResolveTokenExpression("ProductDetail.Dimensions.SizeChart") %></a></li>
			<% } } %>
				</ul>
            </div>
       <% }
     }%>