ASP. NET MVC Custom routing-implement Irouteconstraint limit controller name (reprint)

Before customizing constraints

namespacemvcapplication2{ Public classRouteconfig { Public Static voidregisterroutes (routecollection routes) {routes. Ignoreroute ("{Resource}.axd/{*pathinfo}"); //defaultroutes. MapRoute (Name:"Default", URL:"{Controller}/{action}/{id}", defaults:New{controller ="Home", action ="Index", id =urlparameter.optional}); }    }}

Effect

After customizing constraints

Implementing the Irouteconstraint Interface

usingSystem;usingSystem.Web.Routing;namespacemvcapplication2.extension{ Public classExcludecontroller:irouteconstraint {Private ReadOnly string_controller;  PublicExcludecontroller (stringController) {_controller=Controller; }         Public BOOLMatch (System.Web.HttpContextBase HttpContext, Route route,stringParameterName, routevaluedictionary values,
Routedirection routedirection) {//returns False if the controller value obtained in the route is equal to the value set by the constraint            return!string. Equals (values["Controller"].        ToString (), _controller, stringcomparison.ordinalignorecase); }    }}

Route add constraint

usingSYSTEM.WEB.MVC;usingSystem.Web.Routing;usingmvcapplication2.extension;namespacemvcapplication2{ Public classRouteconfig { Public Static voidregisterroutes (routecollection routes) {routes. Ignoreroute ("{Resource}.axd/{*pathinfo}"); //defaultroutes. MapRoute (Name:"Default", URL:"{Controller}/{action}/{id}", defaults:New{controller ="Home", action ="Index", id =urlparameter.optional}, Constraints:New{controller =NewExcludecontroller ("rentalproperties") }            ); }    }} 

Effect

Visible, with the custom constraint, the controller with the Rentalproperties name is limited.

ASP. NET MVC Custom routing-implement Irouteconstraint limit controller name (reprint)