Add CORS Header to an ASP.NET MVC project

February 17, 2020

Web.config (IIS)

code

<configuration>
  <system.webServer>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="https://other.mydomain.net" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, OPTIONS" />
        <add name="Access-Control-Allow-Headers" value="Content-Type, Authorization" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>

Hinweis: Wenn <configuration> oder <system.webServer> schon existiert, nur den fehlenden Teil einfuegen.

Test (Browser)

code

fetch("https://main.mydomain.net/Snapshot/landing-grid-mobile?count=12")
  .then((r) => r.json())
  .then(console.log);