Remove .NET 6 from the repository (Azure#50285)

* Initial plan for issue

* Update core packages to remove .NET 6 and add .NET 8

Co-authored-by: m-redding <[email protected]>

* Update storage and servicebus projects to remove .NET 6

Co-authored-by: m-redding <[email protected]>

* Update more storage packages to remove .NET 6

Co-authored-by: m-redding <[email protected]>

* Update remaining storage packages to remove .NET 6

Co-authored-by: m-redding <[email protected]>

* Update remaining samples and projects to use .NET 8

Co-authored-by: m-redding <[email protected]>

* Fix issues in .csproj files as per PR feedback

Co-authored-by: m-redding <[email protected]>

* Remove net8.0 where RequiredTargetFrameworks already includes it

Co-authored-by: m-redding <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: m-redding <[email protected]>

Author: Copilot

samples/AppSecretsConfig/AppSecretsConfig.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>AppSecretsConfig</RootNamespace>
 </PropertyGroup>
 

samples/CloudClipboard/CloudClipboard/CloudClipboard.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <LangVersion>preview</LangVersion>
   </PropertyGroup>
 

samples/CloudClipboard/GarbageCollector/GarbageCollector.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <LangVersion>preview</LangVersion>
   </PropertyGroup>
 

samples/iothub-connect-to-eventhubs/IotHubToEventHubsSample.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

sdk/core/Azure.Core.Experimental/api/Azure.Core.Experimental.net6.0.cs

@@ -5,7 +5,7 @@
     <Version>0.1.0-preview.38</Version>
     <PackageTags>Microsoft Azure Client Pipeline</PackageTags>
     <Nullable>enable</Nullable>
-    <TargetFrameworks>$(RequiredTargetFrameworks);net462;net6.0</TargetFrameworks>
+    <TargetFrameworks>$(RequiredTargetFrameworks);net462</TargetFrameworks>
     <NoWarn>$(NoWarn);AZC0012</NoWarn>
     <IncludeOperationsSharedSource>true</IncludeOperationsSharedSource>
   </PropertyGroup>