传递一个对象[]到一个params对象[]不工作 [英] passing a object[] to a params object[] not working

问题描述

我已经阅读了有关将对象[]传递给params对象[]的主题，但我不知道为什么它不与我一起工作。

I've read the topic about passing an object[] to a params object[] but I don't know why it's not working with me.

在类中有这些太多的函数：

I have these too functions in a class:

...
    private void CallbackEvent(object source, CallbackEvetArgs e) { // Some event with e.Data as string
    ...
        string[] values = e.Data.Split('|');
        DoSave("save", values.Skip(1).Cast<object>().ToArray());
    ...
    }
...
    public void DoSave(string action, params object[] values) {
    ...
        string value1 = values[0];
    ...
    }
...

接收一个字符串value1，value1接收整个数组（string []），因此无效的转换异常。

but instead of receiving an string in value1, value1 is receiving the whole array (string[]) and therefore an invalid casting exception.

我做错了什么？

推荐答案

C＃（一般为.NET）数组是协变的。您可以简单地将 string [] 传递给 object [] 参数。

C# (.NET in general) arrays are covariant. You can simply pass the string[] to an object[] parameter.

DoSave("save", values.Skip(1).ToArray());

您发布的代码绝对不是您测试的确切代码。 Cast< object> 也应该正常工作。此行不应编译：

The code you posted is definitely not the exact code you tested. Cast<object> should also work correctly. This line shouldn't compile:

string value1 = values[0]; // object -> string, no implicit conversion.

请发布导致问题的完全代码。

Please post the exact code causing the problem.

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