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

问题描述

我有这需要params对象的方法[]，如：

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

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

当我传递两个对象数组这种方法，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[]

但是当我通过一个单一的对象[]，它没有考虑我的对象[]作为第一个参数，而不是它需要的所有元素，比如我想要一个通过他们之一：

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[]

我如何通过一个单一的对象[]作为第一个参数一个参数数组？

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，是什么意思。

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

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

作为一个数组对象的一个​​亚型，这一切都解决了。一个奇怪的解决方案位，虽然，我会同意。

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

编辑：Woops，typoed我的例子code

Woops, typoed my example code.

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