From 64beeb3934fbdc04d565ab03ac9e1dc06ae7e34d Mon Sep 17 00:00:00 2001
From: gbarrs-at-em <57711667+gbarrs-at-em@users.noreply.github.com>
Date: Fri, 11 Jun 2021 20:59:07 +0100
Subject: [PATCH] Update jsonpatch.md

It took me longer than I care to admit before I worked out I was getting a 400 response to a Patch request because I was serialising the request using  `JsonSerializer.Serialize` rather than `JsonConvert.SerializeObject`.
---
 aspnetcore/web-api/jsonpatch.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/aspnetcore/web-api/jsonpatch.md b/aspnetcore/web-api/jsonpatch.md
index 57e33418d8..27a8e16192 100644
--- a/aspnetcore/web-api/jsonpatch.md
+++ b/aspnetcore/web-api/jsonpatch.md
@@ -46,6 +46,8 @@ The preceding code requires the `Microsoft.AspNetCore.Mvc.NewtonsoftJson` packag
 
 [!code-csharp[](jsonpatch/samples/3.0/WebApp1/Startup.cs?name=snippet1)]
 
+Use the `Newtonsoft.Json.JsonConvert.SerializeObject` method to serialize a JsonPatchDocument.
+
 ## PATCH HTTP request method
 
 The PUT and [PATCH](https://tools.ietf.org/html/rfc5789) methods are used to update an existing resource. The difference between them is that PUT replaces the entire resource, while PATCH specifies only the changes.