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I have an ASP.NET MVC4 application in which I am creating multiple areas, is there a way I can find out programmatically the number of areas that are present and their names.
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ASP.NET MVC introduced a new feature called Area for this. Area allows us to partition the large application into smaller units where each unit contains a separate MVC folder structure, same as the default MVC folder structure.
RegisterAllAreas Method (Object) Registers all areas in an ASP.NET MVC application by using the specified user-defined information.
Areas are an ASP.NET feature used to organize related functionality into a group as a separate namespace (for routing) and folder structure (for views). Using areas creates a hierarchy for the purpose of routing by adding another route parameter, area , to controller and action or a Razor Page page .
When you add an area to an ASP.NET MVC application, Visual Studio creates a file named AreaRegistration. The file contains a class that derives from AreaRegistration. This class defines the AreaName property and the RegisterArea method, which registers the route information for the new area.
The AreaRegistration.RegisterAllAreas(); registers each area route with the DataTokens["area"] where the value is the name of the area.
So you can get the registered area names from the RouteTable
var areaNames = RouteTable.Routes.OfType<Route>()
.Where(d => d.DataTokens != null && d.DataTokens.ContainsKey("area"))
.Select(r => r.DataTokens["area"]).ToArray();
If you are looking for the AreaRegistration themselves you can use reflection to get types which derives from AreaRegistration in your assambly.
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