c# webapi query string routing

Question

Below is my controller and action:

[RoutePrefix("api/PaymentManagementController")] public class PaymentManagementController : ApiController { [HttpGet] [Route("")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

Here is WebApi.config:

config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{action}/", defaults: new { id = RouteParameter.Optional }

This link is working:

localhost:59253/api/PaymentManagementController?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789

However, I expected it as:

localhost:59253/api/PaymentManagementController/CheckStatus?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789

Even after marking Routing as below:

[RoutePrefix("api/PaymentManagementController")] public class PaymentManagementController : ApiController { [HttpGet] [Route("CheckStatus/{commandType}/{account}/{txnId}")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

I receive error as:

No HTTP resource was found that matches the request URI 'localhost:59253/api/PaymentManagementController?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789'. No action was found on the controller 'PaymentManagement' that matches the request.

I believe the route you should test for "CheckStatus/{commandType}/{account}/{txnId}" should be 'localhost:59253/api/PaymentManagementController/CheckStatus/check/ParamValue1/SomePrefix0123456789' given your second routing, the first one, the controller is working correctly because you assigned null string the route to the method. — user5292841
– user5292841, Commented Jan 8, 2019 at 16:10

Deepak Agarwal · Accepted Answer · 2019-01-08 16:18:39Z

Change your route to

[HttpGet] [Route("CheckStatus")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { }

user5292841 · Accepted Answer · 2019-01-08 16:31:53Z

as I posted above,

[RoutePrefix("api/PaymentManagementController")] public class PaymentManagementController : ApiController { [HttpGet] [Route("CheckStatus")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { }

use the test url:

localhost:59253/api/PaymentManagementController/CheckStatus?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789

but the second pattern you tried is more modern:

[RoutePrefix("api/PaymentManagementController")] public class PaymentManagementController : ApiController { [HttpGet] [Route("CheckStatus/{commandType}/{account}/{txnId}")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

you should test this using the URL

localhost:59253/api/PaymentManagementController/CheckStatus/check/ParamValue1/SomePrefix0123456789

Sahil Sharma · Accepted Answer · 2019-01-09 08:11:06Z

You define attributes on your controller and it works as expected using Attribute Routing. The defined url in attribute routing works like this : Route Prefix / Route / Parameters and for your code it will work for api/PaymentManagementController?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789.

To achieve the requested url for work, try this code:

[RoutePrefix("api/PaymentManagementController")] public class PaymentManagementController : ApiController { [HttpGet] [Route("CheckStatus")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

Obelixx · Accepted Answer · 2019-01-09 08:48:18Z

Remove "Controller" from RoutePrefix or remove the whole attribute - controllers are mapped automatically.

[RoutePrefix("api/PaymentManagement")]

To go with the expected link without controller:

localhost:59253/api/PaymentManagement/CheckStatus?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789

I would go with:

public class PaymentManagementController : ApiController { public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

To go with the expected link with controller:

localhost:59253/api/PaymentManagementController/CheckStatus?commandType=check&account=ParamValue1&txnId=SomePrefix0123456789

public class PaymentManagementControllerController : ApiController { public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { } }

Lin · Accepted Answer · 2019-01-08 17:37:41Z

0

 Try it. [HttpGet] [Route("CheckStatus")] public HttpResponseMessage CheckStatus(string commandType, string account, string txnId) { }

answered Jan 8, 2019 at 17:37

Lin

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1 Comment

Farhana Naaz Ansari Over a year ago

please try to add the explanation that what you have done in the answer.

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