Parameter Binding in ASP.NET Web API Decoding + (%2B) As Space

Question

Given the following method in a controller for a ASP.NET Web API:

[HttpGet]
[ApiRoute("resource/{id}/end-point)]
public IHttpActionResult MethodName (int id, string clientTimeZone)
{
     ...
}

Whenever I submit a GET request to http://localhost:5684/api/v1/resource/1/end-point?client_timezone=%2B0500 clientTimezone is passed in to clientTimeZone as %2B0500 and it parses the encoded '+' sign into a space character. Why can't ASP.NET decode +'s from the URI?

In the header I have "ContentType = application/json" and a bearer token

I am trying to get "+0500" into my method but it is turning into " 0500"

Are you sure %2B is being sent and not +?

ProgrammingLlama
– ProgrammingLlama

2018-04-13 15:34:12 +00:00
Commented Apr 13, 2018 at 15:34 — ProgrammingLlama
– ProgrammingLlama, Commented Apr 13, 2018 at 15:34
Yes %2B is being sent in, not +

Nick Gallimore
– Nick Gallimore

2018-04-13 17:56:17 +00:00
Commented Apr 13, 2018 at 17:56 — Nick Gallimore
– Nick Gallimore, Commented Apr 13, 2018 at 17:56

Anthony Greer · Accepted Answer · 2018-04-13 19:55:03Z

3

Are you using Content-Type of application/x-www-form-urlencoded when consuming the api? This will treat a '+' character as a space when used in your URL.

More details here: When to encode space to plus (+) or %20?

Try changing your Content-Type to application/json instead and see if parameter binding behaves as expected.

answered Apr 13, 2018 at 19:55

Anthony Greer

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1 Comment

Nick Gallimore Over a year ago

I went ahead and tried changing the content type, that didn't work

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