Post a simple string value from AngularJS to .NET Web API
UPDATED 10/7/2014: Added more detailed code samples to the end of the post.
I got stuck today trying to post a simple string parameter in the body of an http request from angularjs to a asp.net web api controller, first I was getting a 404 error on the controller route which was fixed by adding the [FromBody] attribute to my parameter like so:
public IHttpActionResult ProcessFile([FromBody]string fileName)Then I ran into a problem with parameter binding, my fileName parameter kept coming through as null, I tried sending it through as a json object { fileName: 'some file name' } and also just as the name some file name without any luck.
There were a few answers on stack overflow saying to prefix the string with an equals sign or wrap it in a json object with an empty string as the property name like { '': 'some file name' } but both of these approaches seemed a bit hacky to me.
The solution I found was to simply wrap the string value in double quotes in your angular post:
$http.post(Config.apiUrl + '/processfile', '"' + fileName + '"');
Here's a more detailed code sample for the Web API controller and AngularJS service:
Web API Controller
public class ExampleController : ApiController
{
public IHttpActionResult ProcessFile([FromBody]string fileName)
{
// do something with fileName parameter
return Ok();
}
}AngularJS Service
'use strict';
angular.module('Example')
.factory('ExampleService', ['$http', 'Config',
function ($http, Config) {
var service = {};
service.ProcessFile = function (fileName) {
return $http.post(Config.apiUrl + '/example/processfile', '"' + fileName + '"');
};
return service;
}]);
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