如何在C#中使用默认参数？
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How to use default parameters in C#?
提问by Chin
In other languages I can set up the method signature like
在其他语言中，我可以设置方法签名，如
cookEgg(boolean hardBoiled = true)
This defaults the parameter hardboiledto true, if I don't receive a parameter in the method call.
如果我在方法调用中没有收到参数，则默认参数hardboiled为true。
How would I achieve this in C#?
我将如何在 C# 中实现这一目标？
采纳答案by Pavel Minaev
At present, you have to overload the method:
目前，您必须重载该方法：
void cookEgg(bool hardBoiled) { ... }
void cookEgg() { cookEgg(true); }
C# 4.0 will add optional arguments - you will be able to write code exactly as in your original sample, and it will work as you'd expect.
C# 4.0 将添加可选参数 - 您将能够完全按照原始示例编写代码，并且它会按您的预期工作。
回答by adatapost
This is not what you look exactly but I think paramsargument is another answer.
这不是你看起来的样子，但我认为params参数是另一个答案。
void test(params int []arg) { }
回答by QrystaL
Default parameters are supported in C# 4 (Visual Studio 2010).
C# 4 (Visual Studio 2010) 支持默认参数。
http://msdn.microsoft.com/en-us/library/dd264739(VS.100).aspx
http://msdn.microsoft.com/en-us/library/dd264739(VS.100).aspx
