判断代码片段是class还是method：

public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){string codeSnippet1 = @"public class MyClass{bool b=false;public    void   MyMethod(){int i=0;// Method logic}}";string codeSnippet2 = @"public void MyMethod(){// Method logic}public void MyMethod1(){// Method logic}
";Console.WriteLine(IsClassOrFunction(codeSnippet1)); // Output: ClassConsole.WriteLine(IsClassOrFunction(codeSnippet2)); // Output: Function}static string IsClassOrFunction(string codeSnippet){// Regular expression to match a class definitionvar classRegex = new Regex(@"^\s*public\s+class\s+\w+", RegexOptions.Multiline);// Regular expression to match a method definitionvar methodRegex = new Regex(@"^\s*(public|private|protected|internal)?\s*(static\s+)?\w+\s+\w+\s*\(.*\)\s*\{", RegexOptions.Multiline);if (classRegex.IsMatch(codeSnippet)){return "Class";}else if (methodRegex.IsMatch(codeSnippet)){return "Function";}else{return "Unknown";}}}

抽取class代码中的成员变量和成员方法：

using System;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;class Program
{static void Main(){string codeSnippet = @"public class MyClass{public int MyField;private string _myPrivateField;public void MyMethod(){// Method logic}private void MyPrivateMethod(){// Method logic}}";AnalyzeClass(codeSnippet);}static void AnalyzeClass(string codeSnippet){// Parse the code snippetvar tree = CSharpSyntaxTree.ParseText(codeSnippet);var root = tree.GetRoot();// Find the class declarationvar classDeclaration = root.DescendantNodes().OfType<ClassDeclarationSyntax>().FirstOrDefault();if (classDeclaration != null){Console.WriteLine($"Class: {classDeclaration.Identifier.Text}");// Extract fields (member variables)var fields = classDeclaration.Members.OfType<FieldDeclarationSyntax>();Console.WriteLine("Fields:");foreach (var field in fields){var fieldType = field.Declaration.Type.ToString();foreach (var variable in field.Declaration.Variables){Console.WriteLine($"  {fieldType} {variable.Identifier.Text}");}}// Extract methodsvar methods = classDeclaration.Members.OfType<MethodDeclarationSyntax>();Console.WriteLine("Methods:");foreach (var method in methods){var returnType = method.ReturnType.ToString();Console.WriteLine($"  {returnType} {method.Identifier.Text}");}}else{Console.WriteLine("No class declaration found.");}}
}