改变结构的方法 [英] change struct in method

问题描述

我怎样才能改变结构的外部方法？

How can I change struct in external method ?

public void ChangeStruct (MyStruct myStruct) {
   myStruct.field1 = 10;
   return;
}

当我通过结构该方法后ChangeStruct方法我想MYSTRUCT改变。

When I pass struct to ChangeStruct method after that method I would like myStruct to be changed.

推荐答案

您需要传递一个参考结构，而不是使用的 REF 关键字：

You need to pass a reference to the struct instead of a copy using the ref keyword :

public void ChangeStruct (ref MyStruct myStruct)
{
   myStruct.field1 = 10;
}

ChangeStruct(ref someStruct);

您当前的code在进入方法之前创建的结构的完整位对位的拷贝，它的这个副本要修改，裁判关键字力传递引用（托管指针）主叫方的结构，而不是拷贝。

Your current code create a full bit-for-bit copy of the struct before entering the method and it's this copy that you are modifying, the ref keyword force the caller to pass a reference (managed pointer) to the structure instead of the copy.

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