Multiple actions were found that match the request


I had written a new HTTPGet method and it worked well. After sometime, I got a requirement to write one more new HTTPGet method and I had troubles. The code started failing by throwing the below error.

“Multiple actions were found that match the request”

After some search I was able to identify the issue as we have to specify which action(method) we need send your HTTP request. For fixing it, we have to add routes in the WebApiConfig in the below order. The order plays important rule here. 

        public static void Register(HttpConfiguration config)
            // Web API configuration and services
            // Web API routes
            name: “ControllerAndActionOnly”,
            routeTemplate: “api/{controller}/{action}”,
            defaults: new { },
            constraints: new { action = @”^[a-zA-Z]+([\s][a-zA-Z]+)*$” });
                name: “DefaultApi”,
                routeTemplate: “api/{controller}/{id}”,
                defaults: new { id = RouteParameter.Optional }


Hope this helps.

Happy Coding


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