Upgrade to net9

Directory.Build.props

@@ -45,6 +45,10 @@
 
     <DefaultNetFxTargetFramework>net472</DefaultNetFxTargetFramework>
 
+    <NetVS>net8.0</NetVS>
+    <NetVSCode>net9.0</NetVSCode>
+    <NetRazorAll>net8.0;net9.0</NetRazorAll>
+
     <!-- Uncomment this line to run formatting on runtime code-gen if FUSE is turned on -->
     <!-- <DefineConstants>$(DefineConstants);FORMAT_FUSE</DefineConstants> -->
   </PropertyGroup>
@@ -81,8 +85,8 @@
     -->
     <Otherwise>
       <PropertyGroup>
-        <DefaultNetCoreTargetFramework>net8.0</DefaultNetCoreTargetFramework>
-        <DefaultNetCoreTargetFrameworks>$(DefaultNetCoreTargetFramework)</DefaultNetCoreTargetFrameworks>
+        <DefaultNetCoreTargetFramework>$(NetVS)</DefaultNetCoreTargetFramework>
+        <DefaultNetCoreTargetFrameworks>$(NetRazorAll)</DefaultNetCoreTargetFrameworks>
       </PropertyGroup>
     </Otherwise>
   </Choose>

src/Razor/benchmarks/Microsoft.AspNetCore.Razor.Microbenchmarks/Resources.cs

@@ -62,7 +62,12 @@ public static byte[] GetResourceBytes(string name, string? folder = null)
             using var stream = GetResourceStream(name, folder);
 
             value = new byte[stream.Length];
+
+#if NET
+            stream.ReadExactly(value);
+#else
             stream.Read(value, 0, value.Length);
+#endif
 
             s_bytesMap.Add(key, value);
 

src/Razor/src/Microsoft.AspNetCore.Razor.ProjectEngineHost/Utilities/StreamExtensions.NetCore.cs

@@ -103,7 +103,7 @@ public static void WriteSize(this Stream stream, int length)
     public unsafe static int ReadSize(this Stream stream)
     {
         Span<byte> bytes = stackalloc byte[4];
-        stream.Read(bytes);
+        stream.ReadExactly(bytes);
         return BitConverter.ToInt32(bytes);
     }
 }

src/Razor/src/Microsoft.VisualStudio.DevKit.Razor/Microsoft.VisualStudio.DevKit.Razor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>$(DefaultNetCoreTargetFramework)</TargetFramework>
+    <TargetFramework>$(NetVSCode)</TargetFramework>
     <OutputType>Library</OutputType>
     <Description>Razor is a markup syntax for adding server-side logic to web pages. This package contains the language server assets for C# DevKit.</Description>
     <EnableApiCheck>false</EnableApiCheck>

src/Razor/src/rzls/rzls.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>$(DefaultNetCoreTargetFramework)</TargetFramework>
+    <TargetFramework>$(NetVSCode)</TargetFramework>
     <OutputType>Exe</OutputType>
     <Description>Razor is a markup syntax for adding server-side logic to web pages. This package
       contains a Razor language server.</Description>

src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common.Tooling/RazorTestResources.cs

@@ -69,7 +69,12 @@ public static byte[] GetResourceBytes(string name, string? folder = null)
             using var stream = GetResourceStream(name, folder);
 
             value = new byte[stream.Length];
+
+#if NET
+            stream.ReadExactly(value);
+#else
             stream.Read(value, 0, value.Length);
+#endif
 
             s_bytesMap.Add(key, value);