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Add IPNetwork.Parse and TryParse to WN (#29905)

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Tom Dykstra 2023-07-24 18:31:46 -07:00 committed by GitHub
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aspnetcore/release-notes/aspnetcore-8.0.md
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@ -4,7 +4,7 @@ author: rick-anderson
description: Learn about the new features in ASP.NET Core 8.0.
ms.author: riande
ms.custom: mvc
ms.date: 07/19/2023
ms.date: 07/24/2023
uid: aspnetcore-8
---
# What's new in ASP.NET Core 8.0
@ -570,6 +570,36 @@ The debugger display for `WebApplication` highlights important information such
For more information about debugging improvements in .NET 8, see GitHub issue [dotnet/aspnetcore 48205](https://github.com/dotnet/aspnetcore/issues/48205).
### `IPNetwork.Parse` and `TryParse`
The new <xref:System.Net.IPNetwork.Parse%2A> and <xref:System.Net.IPNetwork.TryParse%2A> methods on <xref:System.Net.IPNetwork> add support for creating an `IPNetwork` by using an input string in [CIDR notation](https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing) or "slash notation".
Here are IPv4 examples:
```csharp
// Using Parse
var network = IPNetwork.Parse("192.168.0.1/32");
// Using TryParse
bool success = IPNetwork.TryParse("192.168.0.1/32", out var network);
// Constructor equivalent
var network = new IPNetwork(IPAddress.Parse("192.168.0.1"), 32);
```
And here are examples for IPv6:
```csharp
// Using Parse
var network = IPNetwork.Parse("2001:db8:3c4d::1/128");
// Using TryParse
bool success = IPNetwork.TryParse("2001:db8:3c4d::1/128", out var network);
// Constructor equivalent
var network = new IPNetwork(IPAddress.Parse("2001:db8:3c4d::1"), 128);
```
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## API controllers