C# ASP.NET WebApi route template not working with uri parameters -

i have asp.net webapi application following controller , route:

webapiconfig.cs

var constraintresolver = new defaultinlineconstraintresolver(); constraintresolver.constraintmap.add("validdate", typeof(dateconstraint)); 

controller.cs

[httpget] [route("deleted/{from:validdate?}/{to:validdate?}", name = "getdeleteddata")] [swaggerresponse(httpstatuscode.ok, type = typeof(ienumerable<simpleclass>), description = "response")] public async task<httpresponsemessage> get(     [fromuri]string = "",     [fromuri]string = ""     ) {  } 

constraint

public class dateconstraint : ihttprouteconstraint {     public bool match(         httprequestmessage request,          ihttproute route,          string parametername,          idictionary<string, object> values,         httproutedirection routedirection         )     {         object value;          if (!values.trygetvalue(parametername, out value))             return false;          var attribute = new dateattribute();          return attribute.isvalid(value);     } } 

the above route hit though pass following url ie not passing , parameters controller hit , nothing happen.

http://localhost:65190/products/deleted?adfear=2016-07-01 03:30:05&adfaewr=2016-07-01 03:30:05 

how make sure route hit when correct parameters passed or else throw 404 not found error?

why re-invent wheel.

attribute routing in asp.net web api 2:route constraints

there exists datetime constraint.

also can make last date optional if provided date, filter using date current date.

[httpget] [route("deleted/{from:datetime}/{to:datetime?}", name = "getdeleteddata")] [swaggerresponse(httpstatuscode.ok, type = typeof(ienumerable<simpleclass>), description = "response")] public async task<httpresponsemessage> get(datetime from, datetime? = null) {     //.... } 

based on comments can this

//get products/deleted [httpget] [route("deleted")] public async task<httpresponsemessage> get() {     //... }  //get products/deleted/2016-01-01 //get products/deleted/2016-01-01/2016-03-31 [httpget] [route("deleted/{from:datetime}/{to:datetime?}", name = "getdeleteddata")] public async task<httpresponsemessage> get(datetime from, datetime? = null) {     //... } 

this should handle 3 cases

//get products/deleted //get products/deleted/{from} //get products/deleted/{from}/{to} 

update

if both parameters mode optional

//get products/deleted - including query string hit //get products/deleted?adfear=2016-07-01 03:30:05&adfaewr=2016-07-01 03:30:05 //get products/deleted/2016-01-01 //get products/deleted/2016-01-01/2016-03-31 [httpget] [route("deleted/{from:datetime?}/{to:datetime?}", name = "getdeleteddata")] public async task<httpresponsemessage> get(datetime? = null, datetime? = null) {     //... } 

update2

based on conversation

you can create filter model

public class daterangefilter {     public datetime? { get; set; }     public datetime? { get; set; } } 

and can use in action.

// products/deleted // products/deleted?from=2016-01-01&to=2016-03-31 [httpget] [route("deleted", name = "getdeleteddata")] public async task<httpresponsemessage> get([fromuri]daterangefilter filter) {     //... } 

also remember model validation either via filter or within action.