asp.net core show sublist if data exists

Question

I am trying to display a sublist on a button click if data exists, if not to redirect to another page. What I did

 

View page

 

@foreach (var a in Model.WOForms)
        {
            <div class="row no-gutters mt-2 ml-2">
                <div class="col-md-1">
                    @if (Model.WOS == true)
                    {
                        <input type="submit" class="form-control btn-link" asp-page-handler="WOForm" asp-route-id="@a.WONumber" value="@Html.DisplayFor(modelItem => a.WONumber)" />
                    }
                    @if (Model.WOS == false)
                    {
                        <button type="button" class="col-sm-12 btn btn-link font-weight-bold" style="border-color:firebrick; background-color:lightgray; color:firebrick" data-toggle="collapse" data-target="#Subsequent" aria-expanded="false" aria-controls="Subsequent">@Html.DisplayFor(modelItem => a.WONumber)</button>
                    }
                </div>
                <div class="col-md-2 ml-1">
                    <span class="form-control">@Html.DisplayFor(modelItem => a.AssetName)</span>
                </div>
                <div class="col-md-2 ml-1">
                    <span class="form-control">@Html.DisplayFor(modelItem => a.EquipmentName)</span>
                </div>
                <div class="col-md-2 ml-1">
                    <span class="form-control">@Html.DisplayFor(modelItem => a.ComponentName)</span>
                </div>
                <div class="col-md-3 ml-1">
                    <span class="form-control">@Html.DisplayFor(modelItem => a.Deficiency)</span>
                </div>
                <div class="col-md-1 ml-1">
                    <span class="form-control">@Html.DisplayFor(modelItem => a.WOStatus)</span>
                </div>
            </div>
            <div id="Subsequent" class="collapse">
                <div class="col-sm-12 row no-gutters pl-5">
                    @foreach (var b in Model.WOSubsequents)
                    {
                        <div class="col-md-1 ml-1">
                            <input type="submit" class="form-control btn-link" asp-page-handler="WOForm" asp-route-id="@a.WONumber" value="@Html.DisplayFor(modelItem => a.WONumber) - @Html.DisplayFor(modelItem => b.WONumberS)" />
                        </div>
                        <div class="col-md-2 ml-1">
                            <span class="form-control">@Html.DisplayFor(modelItem => a.AssetName)</span>
                        </div>
                        <div class="col-md-2 ml-1">
                            <span class="form-control">@Html.DisplayFor(modelItem => a.EquipmentName)</span>
                        </div>
                        <div class="col-md-2 ml-1">
                            <span class="form-control">@Html.DisplayFor(modelItem => a.ComponentName)</span>
                        </div>
                        <div class="col-md-3 ml-1">
                            <span class="form-control">@Html.DisplayFor(modelItem => a.Deficiency)</span>
                        </div>
                        <div class="col-md-1 ml-1">
                            <span class="form-control">@Html.DisplayFor(modelItem => a.WOStatus)</span>
                        </div>
                    }

                </div>
            </div>
        }

cshtml

 

WOForms = await (from a in _context.WOMains.Where(a => a.OrgID == orgid)
                            join b in _context.WOInitiators on a.WOMainID equals b.WOMainID into Temp1
                            from c in Temp1

                            select new WOForm
                            {

                                WONumber = a.WONumber,
                                //other fields

                            }).ToListAsync();

            foreach(var i in WOForms)
            {
                WOSubsequents = await _context.WOSubsequents.Where(s => s.WONumber == i.WONumber).OrderBy(s => s.WONumberS).ToListAsync();
                if (WOSubsequents.Count() > 0)
                {
                    WOS = false;
                }
                else
                {
                    WOS = true;
                }
            }

The result is that either buttons are showing the colapsed div or link to the other page while they should be different because one has subsequent data and the other record doesn't

 

Screen