如何将单个对象 [] 传递给参数对象 [] [英] How to pass a single object[] to a params object[]

问题描述

我有一个接受 params object[] 的方法，例如:

I have a method which takes params object[] such as:

void Foo(params object[] items)
{
    Console.WriteLine(items[0]);
}

当我将两个对象数组传递给这个方法时，它工作正常:

When I pass two object arrays to this method, it works fine:

Foo(new object[]{ (object)"1", (object)"2" }, new object[]{ (object)"3", (object)"4" } );
// Output: System.Object[]

但是当我传递单个对象[]时，它不会将我的对象[]作为第一个参数，而是将其所有元素像我想一个一个地传递一样:

But when I pass a single object[], it does not take my object[] as the first param, instead it takes its all elements like I wanted to pass them one by one:

Foo(new object[]{ (object)"1", (object)"2" });
// Output: 1, expected: System.Object[]

如何将单个 object[] 作为第一个参数传递给 params 数组?

How do I pass a single object[] as a first argument to a params array?

推荐答案

一个简单的类型转换将确保编译器知道你在这种情况下的意思.

A simple typecast will ensure the compiler knows what you mean in this case.

Foo((object)new object[]{ (object)"1", (object)"2" }));

由于数组是对象的子类型，所以这一切都成立.不过有点奇怪，我同意.

As an array is a subtype of object, this all works out. Bit of an odd solution though, I'll agree.

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