How to omit methods from Swagger documentation on WebAPI using Swashbuckle

Question

I have a C# ASP.NET WebAPI application with API documentation being automatically generated using Swashbuckle. I want to be able to omit certain methods fr

Answer 1

Make a filter

public class SwaggerTagFilter : IDocumentFilter
{
    public void Apply(SwaggerDocument swaggerDoc, DocumentFilterContext context)
    {
        foreach(var contextApiDescription in context.ApiDescriptions)
        {
            var actionDescriptor = (ControllerActionDescriptor)contextApiDescription.ActionDescriptor;

    if(!actionDescriptor.ControllerTypeInfo.GetCustomAttributes().Any() && 
    !actionDescriptor.MethodInfo.GetCustomAttributes().Any())
            {
                var key = "/" + contextApiDescription.RelativePath.TrimEnd('/');
            swaggerDoc.Paths.Remove(key);
            }
        }
    }
}

Make an attribute

[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
public class SwaggerTagAttribute : Attribute
{
}

Apply in startup.cs

 services.AddSwaggerGen(c => {
            c.SwaggerDoc(1,
                new Info { Title = "API_NAME", Version = "API_VERSION" });
            c.DocumentFilter(); // [SwaggerTag]
        });

Add [SwaggerTag] attribute to methods and controllers you want to include in Swagger JSON