1 string s = @"class C { void M() {      } }";
 2 
 3 SyntaxTree tree = SyntaxFactory.ParseSyntaxTree(text);
 4 
 5 CSharpCompilation Compilation = CSharpCompilation
 6                 .Create("test")
 7                 .AddSyntaxTrees(tree)
 8                 .AddReferences(MetadataReference.CreateFromFile(typeof(object).Assembly.Location));
 9 
10   ///为了得到SemanticModel
11 SemanticModel semantic = Compilation.GetSemanticModel(tree);
12 
13 //将树种的节点通过SemanticModelde得到Symbol
14        SyntaxNode syntaxNode;
15        tree.TryGetRoot(out syntaxNode);
16        //这个方法在下面的片段里
17        GetSymbolType(syntaxNode,semantic);  
18 public static void GetSymbolType(SyntaxNode node,SemanticModel model)
19         {
20             foreach (var item in node.DescendantNodesAndSelf().OfType<MemberDeclarationSyntax>())
21             {
22                 //注意 GetDeclaredSymbol方法得到的传入的参数节点是
23                 //MemberDeclarationSyntax的子类，可以查看它都有哪些重载
24                 
25                 ISymbol type = model.GetDeclaredSymbol(item);
26                 
27             }
28         }