Remove net462 target

It's now covered by the `netstandard2.0` target.

Author: drewnoakes

Annotations.cs

@@ -2,7 +2,7 @@
 
 // Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
-#if NETFRAMEWORK || NETSTANDARD2_0
+#if NETSTANDARD2_0
 
 namespace System.Diagnostics.CodeAnalysis
 {

Directory.Build.props

@@ -27,9 +27,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
-
-    <!-- Avoid needing to have targeting packs installed for .NET Framework. -->
-    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" PrivateAssets="All" />
   </ItemGroup>
 
   <!-- Analyzers -->

MetadataExtractor.Benchmarks/MetadataExtractor.Benchmarks.csproj

@@ -13,15 +13,4 @@
     <PackageReference Include="BenchmarkDotNet" Version="0.13.5" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">
-    <Reference Include="System.Windows" />
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-    <Reference Include="WindowsBase" />
-    <Reference Include="System.Xaml" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System" />
-    <Reference Include="Microsoft.CSharp" />
-  </ItemGroup>
-
 </Project>

MetadataExtractor.Tools.FileProcessor/DeconstructionExtensions.cs

@@ -2,6 +2,8 @@
 
 #if NETFRAMEWORK
 
+#pragma warning disable IDE0130 // Namespace does not match folder structure
+
 namespace System.Collections.Generic;
 
 internal static class DeconstructionExtensions

MetadataExtractor/Formats/Exif/ExifTiffHandler.cs

@@ -538,7 +538,7 @@ private bool ProcessMakernote(in TiffReaderContext context, int makernoteOffset)
                 PushDirectory(new OlympusMakernoteDirectory());
                 TiffReader.ProcessIfd(this, context, ifdOffset: makernoteOffset);
             }
-            else if (cameraMake is not null && cameraMake.AsSpan().TrimStart().StartsWith("NIKON", StringComparison.OrdinalIgnoreCase))
+            else if (cameraMake is not null && cameraMake.AsSpan().TrimStart().StartsWith("NIKON".AsSpan(), StringComparison.OrdinalIgnoreCase))
             {
                 if (headerBytes.StartsWith("Nikon"u8))
                 {

MetadataExtractor/IO/BufferReader.Indexed.cs

@@ -129,7 +129,7 @@ public readonly long GetInt64(int index)
     /// <exception cref="IOException"/>
     public readonly float GetFloat32(int index)
     {
-#if NET462 || NETSTANDARD2_0
+#if NETSTANDARD2_0
         return BitConverter.ToSingle(BitConverter.GetBytes(GetInt32(index)), 0);
 #else
         Span<byte> bytes = stackalloc byte[4];
@@ -153,7 +153,7 @@ public readonly float GetFloat32(int index)
 
     public readonly double GetDouble64(int index)
     {
-#if NET462 || NETSTANDARD2_0
+#if NETSTANDARD2_0
         return BitConverter.Int64BitsToDouble(GetInt64(index));
 #else
         Span<byte> bytes = stackalloc byte[8];

MetadataExtractor/IO/IndexedCapturingReader.cs

@@ -143,7 +143,7 @@ public void Dispose()
 
         private void GetPosition(int index, out int chunkIndex, out int innerIndex)
         {
-#if NET462 || NETSTANDARD2_1
+#if NETSTANDARD2_1
             chunkIndex = Math.DivRem(index, _chunkLength, out innerIndex);
 #elif NET6_0_OR_GREATER
             (chunkIndex, innerIndex) = Math.DivRem(index, _chunkLength);

MetadataExtractor/IO/IndexedReader.cs

@@ -280,7 +280,7 @@ public float GetS15Fixed16(int index)
         /// <exception cref="IOException"/>
         public float GetFloat32(int index)
         {
-#if NET462 || NETSTANDARD2_0
+#if NETSTANDARD2_0
             return BitConverter.ToSingle(BitConverter.GetBytes(GetInt32(index)), 0);
 #else
             Span<byte> bytes = stackalloc byte[4];
@@ -299,7 +299,7 @@ public float GetFloat32(int index)
         /// <exception cref="IOException"/>
         public double GetDouble64(int index)
         {
-#if NET462 || NETSTANDARD2_0
+#if NETSTANDARD2_0
             return BitConverter.Int64BitsToDouble(GetInt64(index));
 #else
             Span<byte> bytes = stackalloc byte[8];

MetadataExtractor/MetadataExtractor.csproj

@@ -8,7 +8,7 @@ MOV and related QuickTime video formats such as MP4, M4V, 3G2, 3GP are supported
 
 Camera manufacturer specific support exists for Agfa, Canon, Casio, DJI, Epson, Fujifilm, Kodak, Kyocera, Leica, Minolta, Nikon, Olympus, Panasonic, Pentax, Reconyx, Sanyo, Sigma/Foveon and Sony models.</Description>
     <AssemblyTitle>Metadata Extractor</AssemblyTitle>
-    <TargetFrameworks>$(ModernDotNetTargetFrameworkAlias);netstandard2.0;netstandard2.1;net462</TargetFrameworks>
+    <TargetFrameworks>$(ModernDotNetTargetFrameworkAlias);netstandard2.0;netstandard2.1</TargetFrameworks>
     <NoWarn>$(NoWarn);1591</NoWarn>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>Metadata;Exif;IPTC;XMP;ICC;Photoshop;WebP;PNG;BMP;ICO;PCX;JPEG;TIFF;PSD;Photography;QuickTime;MOV;MP4;M4V;Video;MP3;WAV;Imaging;Video;Audio</PackageTags>
@@ -17,7 +17,7 @@ Camera manufacturer specific support exists for Agfa, Canon, Casio, DJI, Epson,
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
     <PackageReadmeFile>README.md</PackageReadmeFile>
 
-    <AllowUnsafeBlocks Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'netstandard2.0' ">true</AllowUnsafeBlocks>
+    <AllowUnsafeBlocks Condition=" '$(TargetFramework)' == 'netstandard2.0' ">true</AllowUnsafeBlocks>
 
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -44,7 +44,7 @@ Camera manufacturer specific support exists for Agfa, Canon, Casio, DJI, Epson,
     <PackageReference Include="XmpCore" Version="6.1.10.1" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'netstandard2.0' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="System.Memory" Version="4.6.3" />
     <PackageReference Include="System.ValueTuple" Version="4.6.1" />
   </ItemGroup>
@@ -53,14 +53,9 @@ Camera manufacturer specific support exists for Agfa, Canon, Casio, DJI, Epson,
     <PackageReference Include="System.Text.Encoding.CodePages" Version="9.0.5" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net462' ">
-    <Reference Include="System" />
-    <Reference Include="Microsoft.CSharp" />
-  </ItemGroup>
-
   <!-- Analyzers -->
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="4.14.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>

MetadataExtractor/StringValue.cs

@@ -56,7 +56,7 @@ int IConvertible.ToInt32(IFormatProvider? provider)
         {
             try
             {
-#if NETSTANDARD2_0 || NETFRAMEWORK
+#if NETSTANDARD2_0
                 return int.Parse(ToString());
 #else
                 if (Bytes.Length < 100)
@@ -95,7 +95,7 @@ uint IConvertible.ToUInt32(IFormatProvider? provider)
         {
             try
             {
-#if NETSTANDARD2_0 || NETFRAMEWORK
+#if NETSTANDARD2_0
                 return uint.Parse(ToString());
 #else
                 if (Bytes.Length < 100)

MetadataExtractor/Util/EncodingExtensions.cs

@@ -1,6 +1,6 @@
 // Copyright (c) Drew Noakes and contributors. All Rights Reserved. Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
-#if NETSTANDARD2_0 || NETFRAMEWORK
+#if NETSTANDARD2_0
 
 internal static class EncodingExtensions
 {

README.md

@@ -146,7 +146,6 @@ Camera-specific "makernote" data is decoded for cameras manufactured by:
 This library targets:
 
 - .NET 8.0 (`net8.0`)
-- .NET Framework 4.6.2 (`net462`)
 - .NET Standard 2.0 (`netstandard2.0`)
 - .NET Standard 2.1 (`netstandard2.1`)
 
@@ -158,13 +157,18 @@ All target frameworks are provided via the [one NuGet package](https://www.nuget
 
 `netstandard2.1` implements version 2.1 of the .NET Standard, which uses newer APIs where possible.
 
-`net462` targets the full .NET Framework, from version 4.6.2 onwards.
+<details>
+  <summary>Support for older targets in previous versions</summary>
 
-A PCL build was supported until [version 1.5.3](https://www.nuget.org/packages/MetadataExtractor/1.5.3) which supported Silverlight 5.0, Windows 8.0, Windows Phone 8.1 and Windows Phone Silverlight 8.0. PCL versions did not support file-system metadata due to restricted IO APIs.
+- A PCL build was supported until [version 1.5.3](https://www.nuget.org/packages/MetadataExtractor/1.5.3) which supported Silverlight 5.0, Windows 8.0, Windows Phone 8.1 and Windows Phone Silverlight 8.0. PCL versions did not support file-system metadata due to restricted IO APIs.
 
-A `net3.5` build was supported until [version 2.8.1](https://www.nuget.org/packages/MetadataExtractor/2.8.1). Support for this framework was dropped in early 2024 to enable use of newer, more efficient, .NET APIs.
+- A `netstandard1.3` build was supported until [version 2.8.1](https://www.nuget.org/packages/MetadataExtractor/2.8.1). Support for this framework was dropped in mid 2025 in response to Microsoft advisory [NETSDK1215](https://aka.ms/dotnet/dotnet-standard-guidance) (since .NET SDK 9).
 
-A `netstandard1.3` build was supported until [version 2.8.1](https://www.nuget.org/packages/MetadataExtractor/2.8.1). Support for this framework was dropped in mid 2025 in response to Microsoft advisory [NETSDK1215](https://aka.ms/dotnet/dotnet-standard-guidance) (since .NET SDK 9).
+- A `net462` build was supported until [version 2.8.1](https://www.nuget.org/packages/MetadataExtractor/2.8.1). This target became obsolete with the introduction of `netstandard2.0`.
+
+- A `net3.5` build was supported until [version 2.8.1](https://www.nuget.org/packages/MetadataExtractor/2.8.1). Support for this framework was dropped in early 2024 to enable use of newer, more efficient, .NET APIs.
+
+</details>
 
 ## Building