NativeScript HTTP Request Promise + WebApi Error











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Using NativeScript, I am getting an error calling my C# WebApi if I do so in the "then" callback function of another HTTP request:



request({
url: 'API_ONE_URL',
method: 'GET'
}).then((response: HttpResponse) => {
request({
url: 'API_TWO_URL',
method: 'GET'
}).then((response: HttpResponse) => {
// Do something
}, (e) => {
});
}, (e) => {
});


The error I get is "Collection was modified after the enumerator was instantiated." It does not matter what sort of API I call. I created the following API to test an "empty" controller:



using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace MyProject.Controllers
{
public class EX_TestController : ApiController
{
public HttpResponseMessage Get()
{
return Request.CreateResponse(HttpStatusCode.OK, new { Success = true });
}
}
}


"API_ONE_URL" works fine. If I call "API_TWO_URL" outside of the request callback function , it works fine. But if I call "API_TWO" inside of the callback for "API_ONE", I get that error.



I am stumped, any insight would be awesome!










share|improve this question






















  • Sounds to me that is from your API itself and nothing seems specific to {N} here.
    – Manoj
    Nov 11 at 10:18












  • May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
    – Manoj
    Nov 11 at 10:27

















up vote
0
down vote

favorite












Using NativeScript, I am getting an error calling my C# WebApi if I do so in the "then" callback function of another HTTP request:



request({
url: 'API_ONE_URL',
method: 'GET'
}).then((response: HttpResponse) => {
request({
url: 'API_TWO_URL',
method: 'GET'
}).then((response: HttpResponse) => {
// Do something
}, (e) => {
});
}, (e) => {
});


The error I get is "Collection was modified after the enumerator was instantiated." It does not matter what sort of API I call. I created the following API to test an "empty" controller:



using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace MyProject.Controllers
{
public class EX_TestController : ApiController
{
public HttpResponseMessage Get()
{
return Request.CreateResponse(HttpStatusCode.OK, new { Success = true });
}
}
}


"API_ONE_URL" works fine. If I call "API_TWO_URL" outside of the request callback function , it works fine. But if I call "API_TWO" inside of the callback for "API_ONE", I get that error.



I am stumped, any insight would be awesome!










share|improve this question






















  • Sounds to me that is from your API itself and nothing seems specific to {N} here.
    – Manoj
    Nov 11 at 10:18












  • May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
    – Manoj
    Nov 11 at 10:27















up vote
0
down vote

favorite









up vote
0
down vote

favorite











Using NativeScript, I am getting an error calling my C# WebApi if I do so in the "then" callback function of another HTTP request:



request({
url: 'API_ONE_URL',
method: 'GET'
}).then((response: HttpResponse) => {
request({
url: 'API_TWO_URL',
method: 'GET'
}).then((response: HttpResponse) => {
// Do something
}, (e) => {
});
}, (e) => {
});


The error I get is "Collection was modified after the enumerator was instantiated." It does not matter what sort of API I call. I created the following API to test an "empty" controller:



using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace MyProject.Controllers
{
public class EX_TestController : ApiController
{
public HttpResponseMessage Get()
{
return Request.CreateResponse(HttpStatusCode.OK, new { Success = true });
}
}
}


"API_ONE_URL" works fine. If I call "API_TWO_URL" outside of the request callback function , it works fine. But if I call "API_TWO" inside of the callback for "API_ONE", I get that error.



I am stumped, any insight would be awesome!










share|improve this question













Using NativeScript, I am getting an error calling my C# WebApi if I do so in the "then" callback function of another HTTP request:



request({
url: 'API_ONE_URL',
method: 'GET'
}).then((response: HttpResponse) => {
request({
url: 'API_TWO_URL',
method: 'GET'
}).then((response: HttpResponse) => {
// Do something
}, (e) => {
});
}, (e) => {
});


The error I get is "Collection was modified after the enumerator was instantiated." It does not matter what sort of API I call. I created the following API to test an "empty" controller:



using System.Net;
using System.Net.Http;
using System.Web.Http;

namespace MyProject.Controllers
{
public class EX_TestController : ApiController
{
public HttpResponseMessage Get()
{
return Request.CreateResponse(HttpStatusCode.OK, new { Success = true });
}
}
}


"API_ONE_URL" works fine. If I call "API_TWO_URL" outside of the request callback function , it works fine. But if I call "API_TWO" inside of the callback for "API_ONE", I get that error.



I am stumped, any insight would be awesome!







c# nativescript






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share|improve this question










asked Nov 10 at 21:41









smann

1




1












  • Sounds to me that is from your API itself and nothing seems specific to {N} here.
    – Manoj
    Nov 11 at 10:18












  • May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
    – Manoj
    Nov 11 at 10:27




















  • Sounds to me that is from your API itself and nothing seems specific to {N} here.
    – Manoj
    Nov 11 at 10:18












  • May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
    – Manoj
    Nov 11 at 10:27


















Sounds to me that is from your API itself and nothing seems specific to {N} here.
– Manoj
Nov 11 at 10:18






Sounds to me that is from your API itself and nothing seems specific to {N} here.
– Manoj
Nov 11 at 10:18














May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
– Manoj
Nov 11 at 10:27






May be did you try calling third party stubs, for instance jsonplaceholder.typicode.com
– Manoj
Nov 11 at 10:27



















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