From 695fb0030828cf590c98f1d5b65ef9f96b737f64 Mon Sep 17 00:00:00 2001
From: "kishan.anem" <kishan.anem@live.com>
Date: Sun, 6 May 2018 22:27:15 +0530
Subject: [PATCH] IUrlHelper and support for RouteOptions.LowercaseUrls

IUrlHelper and support for RouteOptions.LowercaseUrls

#issue : https://github.com/aspnet/Mvc/issues/7720
---
 src/Microsoft.AspNetCore.Routing/RouteCollection.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Microsoft.AspNetCore.Routing/RouteCollection.cs b/src/Microsoft.AspNetCore.Routing/RouteCollection.cs
index a2dae64291..0d93c1f9ac 100644
--- a/src/Microsoft.AspNetCore.Routing/RouteCollection.cs
+++ b/src/Microsoft.AspNetCore.Routing/RouteCollection.cs
@@ -154,6 +154,11 @@ namespace Microsoft.AspNetCore.Routing
                 if (_options.LowercaseUrls)
                 {
                     urlWithoutQueryString = urlWithoutQueryString.ToLowerInvariant();
+
+                    if (!string.IsNullOrEmpty(queryString))
+                    {
+                        queryString = queryString.ToLowerInvariant();
+                    }
                 }
 
                 if (_options.AppendTrailingSlash && !urlWithoutQueryString.EndsWith("/"))