请解释（ByVal o As Object，ByVal e As CommandEventArgs）的含义 [英] please explain the meaning of (ByVal o As Object, ByVal e As CommandEventArgs)

问题描述

（ByVal o As Object，ByVal e As CommandEventArgs）

(ByVal o As Object, ByVal e As CommandEventArgs)

推荐答案

我不擅长解释，但我会尝试..（所以其他的CP出来了如果我错了，请纠正我。）



[ByVal o as Object] - 我通常在函数中使用它。示例..

I'm not good at explaining but I'll try.. (so other CPians out there, correct me if I'm wrong.)

[ByVal o as Object] -- I usually use this in a function. Example..

Public function sum (ByVal Num1 as integer, num2 as integer) as integer
sum = Num1 + Num2
return sum
end function

[ByVal e as CommandEventArgs] - 我通常使用这个使用AddHandler（或EventHandler）复制事件。



ByVal（表示ByValue）返回确切的值。

ByRef（表示ByReference） ）返回变量指向的数据存储中的值。



当您从Designer视图中双击对象时，您可以将该短语视为默认值。而且默认情况下，它总是ByVal。

[ByVal e as CommandEventArgs] -- I usually use this to replicate an event by using AddHandler (or EventHandler).

ByVal (means ByValue) returns the exact value.
ByRef (means ByReference) returns the value from the data storage where the variable points at.

You can see that phrase as a default when you double click an object from the Designer view. And also by default, it is always ByVal.

结帐：



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