数组中的交换对象 - C＃ [英] Swapping Objects in an Array - C#

问题描述

在C＃中，我有菜单项的Array。我试图用交换索引2和数组的索引3两个对象都没有成功以下code：

In C#, I have an Array of MenuItem. I'm trying to swap the two Objects in index 2 and index 3 of the array without success using the code below:

MenuItem Temp = Items[2];  
Items[2] = Items[3];  
Items[3] = Temp;  

必须有一个原因，第二个和第三个行不工作在C＃我可能还不明白。有没有人能够澄清些吗？我一定要更深入和交换中的对象的每个属性分别？

There must be a reason why the second and third lines aren't working in C# which I may not understand yet. Is anyone able to clarify it a bit more? Do I have to go deeper and swap each property in the objects individually?

编辑 - 对不起。貌似我试图清理张贴时所做的code的一个烂摊子。现予以更正。

Edited - Sorry. Looks like I made a mess of the code when trying to clean it up for posting. Corrected now.

实际code是：

MenuItem TempButton = MenuItems.Items[SelectedButton.CountId];  
MenuItems.Items[SelectedButton.CountId] = MenuItems.Items[SelectedButton.CountId + 1];  
MenuItems.Items[SelectedButton.CountId + 1] = TempButton;  

MenuItems.Items 是菜单项

放眼观看我已经放在MenuItems.Items，什么也没有发生在2线或3。

Looking at the Watch I have placed on MenuItems.Items, nothing happens on Line 2 or 3.

的 MenuItems.Items 酒店get和set功能，这可能是导致该问题...将进一步调查...

The MenuItems.Items property has get and set functions, which may be causing the issue... Will investigate further...

推荐答案

您的设置产品[2] 到温度，这是产品[2] 来首先，让你有效地没有做任何事情。我不知道是什么 SelectedButton.CountId 应该是。

You are settings Items[2] to Temp, which was Items[2] to begin with, so you are effectively not doing anything. I don't know what SelectedButton.CountId is supposed to be.

但如果你只是想要交换指数2和3，你可以这样做：

But if you just want to swap indices 2 and 3, you can do this:

Item Temp = Items[2];
Items[2] = Items[3];
Items[3] = Temp;

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