string code = "int x = 5;"; SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(code); SyntaxNode root = syntaxTree.GetRoot();
string code = "int x = 5;"; SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(code); SyntaxNode root = syntaxTree.GetRoot(); // Modify the root node by adding a new variable declaration var newVariable = SyntaxFactory.VariableDeclaration( SyntaxFactory.ParseTypeName("string"), SyntaxFactory.SeparatedList(new[] { SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier("y")) .WithInitializer(SyntaxFactory.EqualsValueClause(SyntaxFactory.LiteralExpression(SyntaxKind.StringLiteralExpression, SyntaxFactory.Literal("hello")))) })); root = root.AddMembers(SyntaxFactory.FieldDeclaration(newVariable)); // Output the modified code Console.WriteLine(root.ToFullString());In this example, we first create a syntax tree and get its root node. Then we modify the root node by adding a new variable declaration. Finally, we output the modified code using the ToFullString method of the root node. Overall, the Microsoft.CodeAnalysis.SyntaxTree.GetRoot method is a useful tool for working with syntax trees and performing code analysis and modification.