CSHARP

how to enable cors .net

/* default policy */

// add policy
builder.Services.AddCors(options =>
{
	options.AddDefaultPolicy(policy =>
    {
    	policy.WithOrigins("http://localhost:4200") // or AllowAnyOrigin()
        .AllowAnyHeader()
        .AllowAnyMethod()
        .AllowAnyOrigin();
    })
});

// enable policy
app.UseCors();

/* named policy */

// add policy
var AllowWebClient = "allowWebClient";
builder.Services.AddCors(options =>
{
    options.AddPolicy(name: AllowWebClient,
    	policy => 
        {
          policy.WithOrigins("http://localhost:4200") // or AllowAnyOrigin()
          .AllowAnyHeader()
          .AllowAnyMethod()
          .AllowAnyOrigin();
        }
    );
});

// enable policy
app.UseCors(AllowWebClient);

enable cors asp.net mvc

public static void Register(HttpConfiguration config)
{
    var corsAttr = new EnableCorsAttribute("http://example.com", "*", "*");
    config.EnableCors(corsAttr);
}

enable cors asp.net mvc

public static void Register(HttpConfiguration config)
{
    // New code
    config.EnableCors();
}

To enable CORS in the MVC Java config

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry) {

        registry.addMapping("/api/**")
            .allowedOrigins("https://domain2.com")
            .allowedMethods("PUT", "DELETE")
            .allowedHeaders("header1", "header2", "header3")
            .exposedHeaders("header1", "header2")
            .allowCredentials(true).maxAge(3600);

        // Add more mappings...
    }
}

enable cors asp.net mvc

Response.AppendHeader("Access-Control-Allow-Origin", "*");