ASP. NET Core Configuration cross-domain (CORS)

1. Installer Cors Package

Install-Package Microsoft.AspNetCore.Mvc.Cors

Typically, the default is with the package's

2. Configure the Cors service

In the Startup class, ConfigureServices method, add the following code:

services.AddCors(option=>option.AddPolicy("cors", policy => policy.AllowAnyHeader().AllowAnyMethod().AllowCredentials().AllowAnyOrigin()));

Policy names can be customized

3. Configuring Cors Middleware

In the Startup class, Configure method, add the following code:

public void Configure(IApplicationBuilder app, IHostingEnvironment env){    if (env.IsDevelopment())    {        app.UseDeveloperExceptionPage();    }    app.UseCors("cors");    app.UseMvc();}

This is primarily the code that needs to be app.UseCors("cors"); noted before it must be placed UseMvc , and the policy name must be defined .

ASP. NET Core Configuration cross-domain (CORS)