MSBuild ITaskItem RecursiveDir元数据消失 [英] MSBuild ITaskItem RecursiveDir metadata disappears

问题描述

我有一个自定义的MSBuild任务，该任务处理一组文件并返回其修改后的子集.基本上，我只是从输入中创建一个新的ITaskItem数组，跳过一些项目.

I have a custom MSBuild task, which processes a set of files and returns a modified subset of this. Basically, I just create a new ITaskItem array out of the input, skipping some items.

但是，当此结果集返回到MSBuild时，RecursiveDir元数据消失了！在自定义任务的Execute()方法末尾，它仍然具有正确的值，但是当我尝试在MSBuild中使用RecursiveDir时，我发现它为空！当然，这是一个很大的问题！

However, the RecursiveDir metadata disappears when this result set is returned to MSBuild! It is still with the correct values at the end of my custom task's Execute() method but when I then try to use RecursiveDir in MSBuild, I find that it is empty! This is, of course, quite a problem!

我该怎么办?这正常吗?其他元数据(如文件名和扩展名)仍然存在.身份也指向正确的文件.我不会在自定义任务中以任何方式修改元数据.

What should I do? Is this normal? The other metadata such as Filename and Extension is still there. Identity also points to the correct file. I don't modify the metadata in any way in my custom task.

我已经看到其他MSBuild任务库也返回ITaskItem数组，而没有进行任何特殊处理.但是没有人遇到这个问题吗?奇怪！

I have seen other MSBuild task libraries also return ITaskItem arrays without any special processing. Yet nobody has run into this issue? Bizarre!

我正在使用MSBuild 3.5.

I am using MSBuild 3.5.

推荐答案

是的，这很正常.您无能为力.我彻底地了解了MSBuild源代码，显然，进入自定义任务的项目和返回的项目是完全不同的事情. MSBuild首先创建自己的非常特殊的项目，后来它们变得明显笨拙".

Yes, this is normal. There is nothing you can do about it. I have gone through the MSBuild source code thorougly and apparently, the items going into a custom task and the items coming back out are completely different things. MSBuild creates its own very special items at first and later they become significantly "dumber".

我为此类情况找到的解决方案:

The solution I found for such cases:

1. 创建一个包含所有内容的商品组.
2. 创建一个自定义任务，该任务使用要删除的文件生成一个 ItemGroup .
3. 使用< ItemGroup Remove ="@(ListFromCustomTask)"/>

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