c# - 如何定义多个泛型参数的约束

Question

我想知道为什么我不能在谷歌上得到这样简单的东西。此代码不可编译。我怎样才能做到这一点？

public class TestStep<StartEvent, CompletedEvent> 
    where StartEvent : MyBase1, MyInterface1, new() &&
    where CompletedEvent : MyBase2, MyInterface2, new()
{
}

请帮忙。

Answer 1

尝试不使用“&&”

public class TestStep<StartEvent, CompletedEvent> 
    where StartEvent : MyBase1, MyInterface1, new()
    where CompletedEvent : MyBase2, MyInterface2, new()
{
}