Upgrade projects to target .NET 10 (System.CodeDom)

[gewarren]

Contributes to #12513.

[Copilot]

Pull request overview

This PR updates the snippet project files for System.CodeDom (and related System.CodeDom.Compiler) APIs to target .NET 10, supporting the repo’s ongoing modernization work (issue #12513) and keeping snippet compilation aligned with current TFMs.

Changes:

• Retargets many C# snippet projects from net6.0 (and one from net48) to net10.0 / net10.0-windows.
• Keeps Windows-only snippets on *-windows TFMs where Windows Forms is used.

Reviewed changes

Copilot reviewed 64 out of 64 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
snippets/csharp/System.Configuration/ApplicationSettingsBase/Overview/Project.csproj	Retargets snippet project to net10.0-windows.
snippets/csharp/System.CodeDom/CodeVariableDeclarationStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeReferenceCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeOfExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeMemberCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeDelegate/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeDeclarationCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeDeclaration/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeDeclaration/IsPartial/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeTypeConstructor/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeThrowExceptionStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeStatementCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeRemoveEventStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodePropertySetValueReferenceExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodePrimitiveExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeParameterDeclarationExpressionCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeParameterDeclarationExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeNamespaceImport/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeNamespaceCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeNamespace/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMethodReferenceExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMethodReferenceExpression/.ctor/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMethodInvokeExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMemberProperty/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMemberMethod/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMemberField/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMemberField/InitExpression/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeMemberEvent/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeIterationStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeGotoStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeFieldReferenceExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeExpressionStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeExpressionCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeEntryPointMethod/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeDirectiveCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeDirectionExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeDelegateInvokeExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeDefaultValueExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeConstructor/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeConditionStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeCommentStatementCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeCommentStatement/.ctor/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeComment/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeChecksumPragma/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeCatchClauseCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeCatchClause/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeCastExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeBinaryOperatorExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeBaseReferenceExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeAttributeDeclarationCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeAttributeDeclaration/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeAttributeArgumentCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeAttributeArgument/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeAttachEventStatement/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom/CodeArgumentReferenceExpression/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/TempFileCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/IndentedTextWriter/Overview/Project.csproj	Retargets snippet project to net10.0-windows.
snippets/csharp/System.CodeDom.Compiler/GeneratedCodeAttribute/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/CompilerResults/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/CompilerParameters/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/CompilerErrorCollection/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/CompilerError/Overview/Project.csproj	Retargets snippet project to net10.0-windows.
snippets/csharp/System.CodeDom.Compiler/CodeGeneratorOptions/Overview/Project.csproj	Retargets snippet project to net10.0.
snippets/csharp/System.CodeDom.Compiler/CodeDomProvider/CreateProvider/Project.csproj	Retargets snippet project to net10.0.