I'm rendering a PartialView via an Action on my controller.
This is sending a model to the partial which then populates a sub-list for each parent that the partial goes into.
Some of the parent objects don't have children.
I need to capture an Id from the model in the partial to link the sub-list into an Accordion control.
How do I prevent a null reference exception when the child model is empty?
Is there any way to send the ID direct from the Action?
Current attempt...
@using BootstrapSupport
@model IEnumerable<WhatWorks.ViewModels.FamilyListViewModel>
@{ if (string.IsNullOrEmpty(Model.FirstOrDefault().familyId.ToString()))
{
do something...
}
else
{
int modelIndex = Model.FirstOrDefault().familyId;
Controller Action
public ActionResult Index(int Id)
{
var model = GetDisplay(Id).OrderBy(i => i.dob).AsEnumerable();
return PartialView("_family", model);
}
Main View
var family = model.GetIdValue();
<div class="accordion" id="@Html.Raw("accordion")@family.Values.FirstOrDefault()@Html.Raw("_b")">
@Html.Action("Index", "Family", new { Id = family["Id"] })
</div>
ViewModel
public partial class FamilyListViewModel
{
public int Id { get; set; }
public int familyId { get; set; }
public string name { get; set; }
etc...
}
Then do this :
@{ if (Model.Count() >0 )
{
do something...
}
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