c# - 使用 Roslyn 向类添加新字段声明

Question

有什么方法可以使用 roslyn 将成员添加到类中？我想补充:

public int number {get;set;}

更新 我使用了这段代码:

       PropertyDeclarationSyntax o =  
       SyntaxFactory.PropertyDeclaration(SyntaxFactory.ParseTypeName("public  
       System.Windows.Forms.Timer"), "Ticker { get; set; }");

       var newRoot = root.ReplaceNode(oldMethod, oldMethod.AddMembers(o));
       newRoot = Formatter.Format(newRoot, new AdhocWorkspace());

       File.WriteAllText(file, newRoot.ToFullString());

但是结果是这样的:

   public class ClassChild
{
    public int n;
    private int n2;

    public void method1()
    {
        string c = "";
        Console.WriteLine();
    }

public System.Windows.Forms.TimerTicker { get; set; }
}

我想内联 public System.Windows.Forms.TimerTicker { get;放; } 与 n 和 n2。我该怎么做？

Answer 1

查看代码

    private PropertyDeclarationSyntax MakeProperty()
    {
        string name = "n";

        // Create an auto-property
        var property =
            SyntaxFactory.PropertyDeclaration(SyntaxFactory.ParseTypeName("int"), name)
            .AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword))
            .AddAccessorListAccessors(
                SyntaxFactory.AccessorDeclaration(SyntaxKind.GetAccessorDeclaration).WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.SemicolonToken)),
                SyntaxFactory.AccessorDeclaration(SyntaxKind.SetAccessorDeclaration).WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.SemicolonToken))
            );

        return property;
    }

    private async Task<Document> AddProperty(Document document, ClassDeclarationSyntax classeDecl, CancellationToken cancellationToken)
    {
        var root = await document.GetSyntaxRootAsync(cancellationToken);
        var newClass = classeDecl.AddMembers(MakeProperty());
        return document.WithSyntaxRoot(root.ReplaceNode(classeDecl, newClass));
    }

自动属性生成示例取自 this问题。