我有一个通用类。构造函数需要接受一个参数，该参数是同一个类的另一个实例。问题是另一个实例可能有不同的泛型类型。
看起来像C＃允许我使用它自己的泛型类型的方法，但是这不会出现允许构造函数。
public class MyClass< T>
{
public MyClass< T2>（MyClass< T2> parent = null）
{
}
// ...其他东西
$ / code> 上面的代码告诉我 T2 未定义。它不接受它作为方法类型。
一种方法是将第二个泛型添加到我的类中。但这很尴尬，在许多情况下，参数将是 null ，并且没有类型。
任何人都可以看到一个简单的解决方法吗？ 解决方案
你是对的。不支持通用构造函数。
您可以尝试以下操作：
创建一个较低级别的通用接口
public interface IMyClass {
//...some常用的东西
IMyClass父类{get;组; }
}
并将其用作各种类型之间的常用链接
public class MyClass< T> ：IMyClass {
public MyClass（IMyClass parent = null）{
Parent = parent;
}
public IMyClass Parent {get;组; }
// ...其他东西
}
I have a generic class. The constructor needs to accept an argument that is another instance of the same class. The problem is that the other instance can have a different generics type.
Looks like C# allows me to have a method with it's own generics type, but this doesn't appear allowed for the constructor.
public class MyClass<T>
{
public MyClass<T2>(MyClass<T2> parent = null)
{
}
// ... Additional stuff
}
The code above tells me T2 is undefined. It doesn't accept it as a method type.
One approach would be to add a second generic type to my class. But this is awkward and, in many cases, the argument will be null and there is not type.
Does anyone see a simple way around this?
You are correct. Generic constructors aren't supported.
You could probably try the following:
Create a lower level common interface
public interface IMyClass {
//...some common stuff
IMyClass Parent { get; set; }
}
And use that as the common link between the types
public class MyClass<T> : IMyClass {
public MyClass(IMyClass parent = null) {
Parent = parent;
}
public IMyClass Parent { get; set; }
// ... Additional stuff
}
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