How to include Query String in the route resolution in order to allow multiple Actions with the same Method, Route and Query String?

Question

I am converting an ASP.NET MVC (.NET Framework) application to ASP.NET Core MVC. This is strictly a conversion, I cannot make any breaking changes hence I cannot change any Rout

Answer 1

You needs to custom ActionMethodSelectorAttribute:

1.QueryStringConstraintAttribute:

[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
public class QueryStringConstraintAttribute : ActionMethodSelectorAttribute
{
    public string ValueName { get; private set; }
    public bool ValuePresent { get; private set; }
    public QueryStringConstraintAttribute(string valueName, bool valuePresent)
    {
        this.ValueName = valueName;
        this.ValuePresent = valuePresent;
    }
    public override bool IsValidForRequest(RouteContext routeContext, ActionDescriptor action)
    {
        var value = routeContext.HttpContext.Request.Query[this.ValueName];
        if (this.ValuePresent)
        {
            return !StringValues.IsNullOrEmpty(value);
        }
        return StringValues.IsNullOrEmpty(value);
    }
}

2.Controller:

[HttpPut]
[Route("status")]
[QueryStringConstraint("orderGUID",true)]
[QueryStringConstraint("id", false)]
public void UpdateStatusByOrderGuid([FromQuery] Guid orderGUID,[FromBody]POST_Status model)
{

}

[HttpPut]
[Route("status")]
[QueryStringConstraint("id", true)]
[QueryStringConstraint("orderGUID", false)]
public void UpdateStatusById([FromQuery] Guid id, [FromBody]POST_Status model)
{

}

3.Startup.cs:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    //...
    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

Result: