Define constant NETFRAMEWORK explicitly since SDK 10 may not define it

CHANGELOG.md

@@ -27,7 +27,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - [SIL.Windows.Forms.Keyboarding] BREAKING CHANGE: Upgraded to L10nSharp v9. Any clients which also use L10nSharp must also upgrade to v9.
 - [SIL.Windows.Forms.Keyboarding] Add a reference to L10nSharp.Windows.Forms v9.
 - [SIL.Windows.Forms] BREAKING CHANGE: ToolStripExtensions.InitializeWithAvailableUILocales() removed the ILocalizationManager parameter.  This method no longer provides functionality to display the localization dialog box in response to the user clicking More.
-- Temporarily pinned SDK to v9 using global.json.
 
 ### Removed
 
@@ -45,7 +44,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 
 - [SIL.Windows.Forms] Made ContributorsListControl.GetCurrentContribution() return null in the case when a valid row is not selected.
-- [SIL.WritingSystems] Make the English names for Chinese (Simplified) and Chinese (Traditional) consistent regardless of differences in Windows CultureInfo
+- [SIL.WritingSystems] Make the English names for Chinese (Simplified) and Chinese (Traditional) consistent regardless of differences in Windows CultureInfo 
 
 ## [16.1.0] - 2025-07-18
 

SIL.Core.Desktop/SIL.Core.Desktop.csproj

@@ -8,6 +8,9 @@
     <WarningLevel>4</WarningLevel>
     <TargetFrameworks>$(TargetFrameworks);netstandard2.0</TargetFrameworks>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="GitVersion.MsBuild" Version="5.11.1" PrivateAssets="all" />
     <PackageReference Include="JetBrains.Annotations" Version="2024.3.0">

SIL.Windows.Forms.Keyboarding.Tests/SIL.Windows.Forms.Keyboarding.Tests.csproj

@@ -7,6 +7,9 @@
     <TargetFrameworks>$(TargetFrameworks);net8.0-windows</TargetFrameworks>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="L10NSharp" Version="9.0.0-*" />

SIL.Windows.Forms.Keyboarding/SIL.Windows.Forms.Keyboarding.csproj

@@ -6,6 +6,9 @@
     <Description>The SIL.Windows.Forms.Keyboarding library provides cross-platform functionality for keyboard selection and switching in Windows Forms applications. Currently, this library supports system and Keyman keyboards on Windows, and X keyboard extension (XKB) and Intelligent Input Bus (IBus) keyboards on Linux.</Description>
     <TargetFrameworks>$(TargetFrameworks);net8.0-windows</TargetFrameworks>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
 
   <ItemGroup Condition=" !$(DefineConstants.Contains('NETFRAMEWORK')) ">
     <Content Remove="Linux\**" />

SIL.Windows.Forms.Tests/SIL.Windows.Forms.Tests.csproj

@@ -11,6 +11,9 @@
     <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\SIL.Core\SIL.Core.csproj" />

SIL.Windows.Forms/SIL.Windows.Forms.csproj

@@ -10,6 +10,9 @@
     <GenerateResourceUsePreserializedResources>true</GenerateResourceUsePreserializedResources>
     <TargetFrameworks>$(TargetFrameworks);net8.0-windows</TargetFrameworks>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Enchant.Net" Version="1.4.2" />

SIL.WritingSystems/SIL.WritingSystems.csproj

@@ -4,6 +4,9 @@
     <TargetFrameworks>$(TargetFrameworks);netstandard2.0</TargetFrameworks>
     <Description>SIL.WritingSystems contains classes for managing and persisting writing systems using the Locale Data Markup Language (LDML) format. This library also contains classes for processing IETF (BCP-47) language tags and accessing the SIL Locale Data Repository (SLDR).</Description>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net462' OR '$(TargetFramework)' == 'net48' ">
+    <DefineConstants>$(DefineConstants);NETFRAMEWORK</DefineConstants>
+  </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="GitVersion.MsBuild" Version="5.11.1" PrivateAssets="all" />