LINQ expression to get the whole content of right table - entity-framework

Question

In my database, I have these two tables with a relationship :
I would like to get the whole content of the "assignee_kanban" column in "assigneekanban" table (which for now contains six names).
Here is the expression I use (in my "Kanban" controller using entity framework) :
public List<Kanban> LoadCard() {
return _context.Kanbans.Include(c => c.IdAssigneeKanbanNavigation).ToList();}
When I try to get the result in my razor page with :
#foreach (var name in Kanbans)
{
<tr>
<td>#name.IdAssigneeKanbanNavigation.AssigneeKanban1</td>
</tr>
}
unfortunatly, the result I get contains only three names : the three names corresponding to the three "id_assignee_kanban" that exist in the "kanban" table.
How can I get all the names contained in the "assignee_kanban" column ?
(I succeed to get the values using assigneekanban controller but for some reason, I want to use kanban controller with the navigation statement)
(project webassembly blazor using .net 6 aspnet hosted)
Thank you for your help.
Here is the content of the "kanban" table (I removed some no important columns for this problem) :
Here is the content of the "assigneekanban" table :
Here is the output :
As we can see, the name "Robert" corresponding to the id n°5 doesn't appaer in the result and the other names appear as many time they exist in the kanban table (of course, I can add a distinct close to avoid duplicate names but it doesn't bring the missing name !).

Answer 1

You need a second query to get all entries from the assigneekanban table. Your current implementation will only get those values from the assigneekanban that have a foreign key entry in the kanban table (Basically doing an INNER JOIN).
public async Task<List<Kanban>> LoadCardAsync()
{
return _context.Kanbans.ToList();
}
public async Task<List<AssigneeKanban>> LoadAssigneesAsync()
{
return _context.AssigneeKanbans.ToList();
}
public async Task LoadEverythingAsync()
{
Kanbans = await LoadCardAsync();
Assignees = await LoadAssigneesAsync();
}
Then in your Razor Page
#foreach (var assignee in Assignees)
{
<tr>
<td>#assignee.AssigneeKanban1</td>
</tr>
}