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Copy is not reusing instance #29314

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May 11, 2022
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Copy is not reusing instance #29314

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5 changes: 4 additions & 1 deletion docs/standard/serialization/system-text-json-configure-options.md
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
---
title: How to instantiate JsonSerializerOptions with System.Text.Json
description: "Learn how to avoid performance issues and how to use available constructors for JsonSerializerOptions instances."
ms.date: 03/28/2022
ms.date: 05/06/2022
no-loc: [System.Text.Json, Newtonsoft.Json]
zone_pivot_groups: dotnet-version
dev_langs:
Expand Down Expand Up @@ -46,6 +46,9 @@ There is a [JsonSerializerOptions constructor](xref:System.Text.Json.JsonSeriali

:::code language="csharp" source="snippets/system-text-json-how-to-5-0/csharp/CopyOptions.cs" highlight="28":::
:::code language="vb" source="snippets/system-text-json-how-to-5-0/vb/CopyOptions.vb" :::

The metadata cache of the existing `JsonSerializerOptions` instance isn't copied to the new instance. So using this constructor is not the same as reusing an existing instance of `JsonSerializerOptions`.

::: zone-end

::: zone pivot="dotnet-core-3-1"
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