From bc3c4e9f12f432f69abc5a9d6ee42573cef5818e Mon Sep 17 00:00:00 2001
From: Chris R <Tratcher@outlook.com>
Date: Fri, 9 Jun 2017 16:23:47 -0700
Subject: [PATCH] #1200 Doc comments for OnRedirectToIdentityProvider

---
 .../Events/OpenIdConnectEvents.cs                             | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Events/OpenIdConnectEvents.cs b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Events/OpenIdConnectEvents.cs
index 660eba0b33..d8467be8d7 100644
--- a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Events/OpenIdConnectEvents.cs
+++ b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Events/OpenIdConnectEvents.cs
@@ -27,7 +27,9 @@ namespace Microsoft.AspNetCore.Authentication.OpenIdConnect
         public Func<MessageReceivedContext, Task> OnMessageReceived { get; set; } = context => Task.CompletedTask;
 
         /// <summary>
-        /// Invoked before redirecting to the identity provider to authenticate.
+        /// Invoked before redirecting to the identity provider to authenticate. This can be used to set ProtocolMessage.State
+        /// that will be persisted through the authentication process. The ProtocolMessage can also be used to add or customize
+        /// parameters sent to the identity provider.
         /// </summary>
         public Func<RedirectContext, Task> OnRedirectToIdentityProvider { get; set; } = context => Task.CompletedTask;