我有一个基本的抽象泛型类
public abstract class A<T> where T: Control
{
protected T _t { get; set; }
protected abstract void Method ();
protected A(T t)
{
_t = t;
}
}
B 类派生自 A,类型为 TreeView
public class B<T>: A<TreeView>
{
protected override void Method ()
{
_t.CallSomeTreeViewMethod (); // ok!
}
public B (TreeView tree): base (tree)
{
}
}
如何从 B 类派生出从 TreeView 派生的类型?
public class C: B<ExtendedTreeView>
{
protected override void Method ()
{
_t.CallSomeExtendedTreeViewMethod ();
}
public C (ExtendedTreeView tree): base (tree)
{
}
}
最佳答案
代替具体类TreeView
添加通用约束:
public class B<T>: A<T> where T:TreeView
{
protected override void Method ()
{
_t.CallSomeTreeViewMethod (); // ok!
}
public B (T tree): base (tree)
{
}
}
关于c# - 如何从基泛型类派生泛型类?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32824911/