What is ViewStart Page in ASP.Net MVC?

cshtml

Basically by default we have master layout in Views>> Shared >> _Layout.cshtml and this thing is defined in _ViewStart.cshtml that which one is our default master layout. When we create a view with master layout by default its master layout is _Layout.cshtml, but we can change it from _ViewStart.cshtml When we write: @{ Layout = null; } in our view we say that this view does not have any master layout, this is used when we create partial view mostly or a standalone view without master layout. If you open _ViewStart.cshtml by default it has this written in it: @{ Layout = "~/Views/Shared/_Layout.cshtml"; } and we can change it if we want to. You can also change of some specific view Master Layout by writing on top of it the url of master layout view: @{ Layout = "~/Views/Shared/_CustomMasterLayout.cshtml"; }