How to pass variable into layout in .NET?

Question

My aplication have walls with notes. I wish to put on layout name of active wall. How to do that? I know that on front-end I can use just @Model... but who sends this model? Also better idea is store this information in session variable or create another property in user database?

EDIT: I use .NET Core 1.1.

Answer 1

If you are talking about the _Layout.cshtml then you could place the following in _Layout.cshtml:

@RenderSection("layoutName", required: false)

Any view which inherits this layout can now add code to this section.

SomeOtherView.cshtml:

@section layoutName{
   <h1>@Model.LayoutName</h1>
}