this code the first foreach working but the second not work

Question

i using asp.net mvc 

i using debbuging but the second foreach stopped  

@foreach (var item in Model)

{

<h3>@Html.DisplayFor(model => item.CategoryName)</h3>

<h6>@Html.DisplayFor(model => item.CategoryDescription)</h6>

foreach (var subItem in item.Jobs)

{

<div class="row">

<div class="col-md-3">

<img src="~/Uploads/@subItem.JobImage" />

<h3>@Html.DisplayFor(model => subItem.JobType)</h3>

<h3>@Html.DisplayFor(model => subItem.JobDescription)</h3>

<button class="btn btn-default">????????</button>

</div>

</div>

}

}