Eagle Eagle - 10 months ago 164
ASP.NET (C#) Question

ASP.Net Core Nested Area

I want to create area like the following structure


  • Areas


    • Admin


      • FrontEnd


        • Controllers


          • HomeController.cs


        • Views


      • API


        • Controllers


          • HomeController.cs







Startup class

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();

if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseBrowserLink();
}
else
{
app.UseExceptionHandler("/Home/Error");
}

app.UseStaticFiles();

app.UseMvc(routes =>
{
routes.MapRoute(name: "areaRoute",
template: "{area:exists}/{controller=Home}/{action=Index}");

routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}


I already marked [Area("Admin/FrontEnd")] to HomeController but it doesn't work. It return the following error

An unhandled exception occurred while processing the request.

InvalidOperationException: The view 'About' was not found. The following locations were searched:
/Areas/Admin/Views/Home/About.cshtml

How can I do?

Project

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Answer

You can use the AreaViewLocationFormats on RazorViewEngineOptions to indicate what all paths you want MVC to look for views.

services.Configure<RazorViewEngineOptions>(o =>
{
    o.AreaViewLocationFormats.Insert(0, "/Areas/{2}/FrontEnd/Views/Shared/{0}.cshtml");
    o.AreaViewLocationFormats.Insert(0, "/Areas/{2}/FrontEnd/Views/{1}/{0}.cshtml");
});

You can read the detailed documentation on what AreaViewLocationFormats is over here: https://github.com/aspnet/Mvc/blob/1.0.0/src/Microsoft.AspNetCore.Mvc.Razor/RazorViewEngineOptions.cs#L92

Also you can just decorate your controllers to be just [Area("Admin")]