ASP.NET Core ApiVersioning change middleware hierarchy - asp.net

Question

I have a problem with middleware hierarchy. I created very simple web api with one controller/action
[Route("api/v1/values")]
public class ValuesController : Controller
{
// GET api/v1/values/5
[HttpGet("{id}")]
public async Task<IActionResult> Get(string id)
{
return await Task.Run<IActionResult>(() =>
{
if (id == "nf")
{
return NotFound();
}
return Ok($"value: {id}");
});
}
}
I configured routing to use Mvc if match or write Default to response if not.
app.UseMvc();
app.Use(async (context, next) =>
{
await context.Response.WriteAsync("Default");
});
And this works great, below you can see sample requests/responses:
/api/v1/values/1 -> 200, Body: "value: 1"
/api/v1/values/nf -> 404
/api/v1/values -> "Default"
Great, but then I added ApiVersioning, so controller looks like this:
[ApiVersion("1")]
[Route("api/v{version:apiVersion}/values")]
public class ValuesController : Controller
and I added to Startup : services.AddApiVersioning();. It break routing completely, now for each request i get response "Default", when i remove last app.Use, routing works fine for values controller, but i don't have default middleware. Do you know how i can get responses the same as prevously, but with ApiVersioning?

Answer 1

Try this.
[ApiVersion("1.0")]
[Route("api/v{version:apiVersion}/foo")]
public class FooController {}
and in Startup class
public void ConfigureServices(IServiceCollection services)
{
services.AddApiVersioning(options =>
{
options.ReportApiVersions = true;
options.AssumeDefaultVersionWhenUnspecified = true;
options.DefaultApiVersion = new ApiVersion(1, 0);
});
}
I have tried and it worked for me.