这些构造函数中的虚拟成员调用警告是否合法？

Question

我在设置 EditMyDataObject 属性的基本表单中以及在获取 Text 值然后恢复它的扩展表单中收到 Resharper 警告。

在这两种情况下，当我运行应用程序时，都没有发生任何事情。我不认为实现时存在任何潜在的问题，因为我的重写属性不依赖于构造函数中初始化的任何内容，但在阻止 Resharper 之前希望获得第二意见。

public class MyDataObject
{
    //Data Members

    public MyDataObject()
    {
    }
}

public class MyDataObjectEx : MyDataObject
{
    //Data Members

    public MyDataObjectEx()
    {
    }

    public MyDataObjectEx(MyDataObject myDataObject)
    {
    }       
}

public partial class MyDataObjectEditFrm : Form
{
    private MyDataObject _myDataObject;

    protected virtual MyDataObject EditMyDataObject
    {
        get { return _myDataObject; }
        set { _myDataObject = value; }
    }

    /// <summary>
    /// Parameterless constructor needed for designer support of derived classes.
    /// </summary>
    protected MyDataObjectEditFrm()
    {
        InitializeComponent();
    }

    protected MyDataObjectEditFrm(MyDataObject myDataObject)
    {
        InitializeComponent();
        EditMyDataObject = myDataObject;  // Warning: Virtual member call in a constructor

        Text = GetDialogNameFromInputParameters()

        //Remainder of initialization here
    }

    GetDialogNameFromInputParameters()
    {
        //Figure out what the text should be
    }
}


public partial class MyDataObjectExEditFrm : MyDataObjectEditFrm
{
    private MyDataObjectEx _myDataObjectEx;

    protected override MyDataObject EditMyDataObject
    {
        get { return _myDataObjectEx; }
        set
        {
            if (value == null)
                _myDataObjectEx = null;
            else _myDataObjectEx = value as MyDataObjectEx ?? new MyDataObjectEx(value);
        }

    }

    public MyDataObjectExEditFrm(MyDataObject myDataObject) : base(myDataObject)
    {
        //preserve the value computed and set in the base class to prevent the generic form name from the designer overriding it here
        string dialogText = Text; // Warning: Virtual member call in a constructor
        InitializeComponent();
        Text = dialogText; // Warning: Virtual member call in a constructor


        //Remainder of additional initialization for extended data here
    }
}

Answer 1

只要每个派生类以不依赖于该派生类的构造函数中初始化的变量的方式重写此虚拟成员，您就是安全的。问题是，您无法知道从基类派生的每个类都具有这样的行为。因此，该警告是合法的。