C# 在使用基本构造函数时避免重复

Question

有两个class，NodeBase和继承自抽象class NodeBase的ContentSectionNode，我想知道是否有任何方法可以避免在ContentSectionNode中重复一段代码构造函数，同时也委托给基础 class 构造函数。

抽象 NodeBase class 构造函数如下所示：

protected NodeBase(string tagType, string content)
  : this()
{
  TagType = tagType;
  Content = content;
}

protected NodeBase(Guid? parentId, int? internalParentId, string tagType, string content) 
  : this(tagType, content)
{
  ParentId = parentId;
  InternalParentId = internalParentId;
}

ContentSectionNode class 构造函数如下所示：

public ContentSectionNode(Guid createdBy)
  : this()
{
  _createdBy = createdBy;
  _createdAt = DateTime.Now;
  UpdatedAt = _createdAt;
  UpdatedBy = _createdBy;
}

public ContentSectionNode(Guid createdBy, string tagType, string content)
  :base(tagType, content)
{
  _createdBy = createdBy;
  _createdAt = DateTime.Now;
  UpdatedAt = _createdAt;
  UpdatedBy = _createdBy;
}

public ContentSectionNode(Guid createdBy, Guid? parentId, int? internalParentId, string tagType, string content)
  : base(parentId, internalParentId, tagType, content)
{
  _createdBy = createdBy;
  _createdAt = DateTime.Now;
  UpdatedAt = _createdAt;
  UpdatedBy = _createdBy;
}

我想知道是否有任何方法可以避免重复

_createdBy = createdBy;
_createdAt = DateTime.Now;
UpdatedAt = _createdAt;
UpdatedBy = _createdBy;

阻止 ContentSectionNode 的所有 ctors class。请注意，_createdBy、_createdAt 和 UpdatedBy、UpdatedAt fields/props 只能从 ContentSectionNode class 访问并且只能在此处设置。

该项目使用的是 C# 5.0，因此没有自动属性初始化程序。谢谢！

Answer 1

像这样？

public ContentSectionNode(Guid createdBy)
  : this(createdBy,null,null, null, null)
{
}

public ContentSectionNode(Guid createdBy, string tagType, string content)
  : this(createdBy, null, null tagType, contect)
{
}

public ContentSectionNode(Guid createdBy, Guid? parentId, int? internalParentId, string tagType, string content)
  : base(parentId, internalParentId, tagType, content)
{
  _createdBy = createdBy;
  _createdAt = DateTime.Now;
  UpdatedAt = _createdAt;
  UpdatedBy = _createdBy;
}

C# 在使用基本构造函数时避免重复

C# avoid repetition when working with base constructors

.net

c#

architecture

c#-5.0