How to implement Access-Control-Allow-Origin header in asp net

Question

Is it possible to implement  Access-Control-Allow-Origin  header in asp net

User · Answer

Another option is to add it on the web config directly    lt system webServer gt       lt httpProtocol gt         lt customHeaders gt           lt add name  Access-Control-Allow-Origin  value  http   www yourSite com    gt           lt add name  Access-Control-Allow-Methods  value  GET  POST  PUT  DELETE  OPTIONS   gt           lt add name  Access-Control-Allow-Headers  value  Origin  X-Requested-With  Content-Type  Accept    gt         lt  customHeaders gt       lt  httpProtocol gt        I found this in here

User · Answer

Configuring the CORS response headers on the server wasn t really an option  You should configure a proxy in client side   Sample to Angular - So  I created a proxy conf json file to act as a proxy server  Below is my proxy conf json file         api          target    http   localhost 49389        secure   true       pathRewrite              api     api              changeOrigin   true         Put the file in the same directory the package json then I modified the start command in the package json file like below   start    ng serve --proxy-config proxy conf json    now  the http call from the app component is as follows   return this http get   api customers   map  res  Response    gt  res json       Lastly to run use npm start or ng serve --proxy-config proxy conf json

User · Answer

1 Install-Package  Microsoft AspNet WebApi Cors  2   Add this code in WebApiConfig cs   public static void Register HttpConfiguration config           Web API configuration and services         Web API routes      config EnableCors         config MapHttpAttributeRoutes         config Routes MapHttpRoute          name   DefaultApi           routeTemplate   api  controller   id            defaults  new   id   RouteParameter Optional              3  Add this   using System Web Http Cors     4  Add this code in Api Controller  HomeController cs    EnableCors origins       headers       methods        public class HomeController   ApiController        HttpGet       Route  api Home test        public string test                return

User · Answer

From enable-cors org   CORS on ASP NET If you don t have access to configure IIS  you can still add the header through ASP NET by adding the following line to your source pages  Response AppendHeader  quot Access-Control-Allow-Origin quot    quot   quot      See also  Configuring IIS6   IIS7

User · Answer

You would need an HTTP module that looked at the requested resource and if it was a css or js  it would tack on the Access-Control-Allow-Origin header with the requestors URL  unless you want it wide open with

[c#] How to implement "Access-Control-Allow-Origin" header in asp.net

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