Add RouteValuesAddress .ToString ()

[yecril71pl]

Background and Motivation

The following message is unsatisfactory:

Microsoft.AspNetCore.Routing.DefaultLinkGenerator: Debug: No endpoints found for address Microsoft.AspNetCore.Routing.RouteValuesAddress

Proposed API

namespace Microsoft.AspNetCore.Routing
{
    public class RouteValuesAddress
    {
+       public override string ToString();
    }
}

Usage Examples

        if (endpoints.Count == 0)
        {
            Log.EndpointsNotFound(_logger, address);
        }
        else
        {
            Log.EndpointsFound(_logger, address, endpoints);
        }

Alternative Designs

Given the address is generic, It seems easier to define RouteValuesAddress .ToString () than to modify Log.EndpointsNotFound(_logger, address) to display something useful.

Risks

Defining this API is a breaking change. I do not think it will break anything because the current implementation is useless.

diff --git a/.github/ISSUE_TEMPLATE/25_api_proposal.md b/.github/ISSUE_TEMPLATE/25_api_proposal.md

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

[mkArtakMSFT]

Thanks for contacting us. Feel free to send us a PR with the proposed fix and we'll review it.

Thank you for submitting this for API review. This will be reviewed by @dotnet/aspnet-api-review at the next meeting of the ASP.NET Core API Review group. Please ensure you take a look at the API review process documentation and ensure that:

• The PR contains changes to the reference-assembly that describe the API change. Or, you have included a snippet of reference-assembly-style code that illustrates the API change.
• The PR describes the impact to users, both positive (useful new APIs) and negative (breaking changes).
• Someone is assigned to "champion" this change in the meeting, and they understand the impact and design of the change.

[pranavkm]

Approved. See #39792 (comment)