在msbuild中动态创建要在calltarget子目标中使用的属性 [英] Dynamically create a property in msbuild to be used in a calltarget subtarget

问题描述

如何在msbuild中创建属性，以便可以在CallTarget指令中使用它?

How do I create a property in msbuild so that I can use it in a CallTarget directive?

本质上，我正在尝试调用目标子例程"，其中属性充当参数.

Essentially I am trying to call a target 'subroutine' where the properties act as parameters.

我尝试制作一个玩具csproj文件，该文件试图创建一个属性，然后调用一个与之相呼应的目标.它回显null.

I tried making a toy csproj file which attempts to create a property, and then calls a target which echos it. It echos null.

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Target Name="Test">
    <CreateProperty Value="AAA">
        <Output TaskParameter="Value" PropertyName="Foo" />
    </CreateProperty>
    <CallTarget Targets="Test2" />
  </Target>
  <Target Name="Test2">
    <Message Text="Target Test2: Foo=$(Foo)" />
  </Target>
</Project>

运行msbuild TestProj.csproj /t:Test输出:

Test:
  Target Test: Foo=AAA
Test2:
  Target Test2: Foo=

我想问题是我正在以强制性的方式考虑msbuild(这显然是一个常见错误)，所以我希望有人可以纠正似乎是msbuild的工作方式中一个非常根本的误解.

I guess the problem is I'm thinking about msbuild in an imperative fashion (which is apparently a common mistake), so I'm hoping someone can correct what appears to be a very fundamental misunderstanding in how msbuild works.

推荐答案

您可以使用目标属性DependsOnTarget来获取从一个任务传递到另一个任务的属性.

You can use the target property DependsOnTarget to get the property passed from task to task.

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Target Name="Test">
    <CreateProperty Value="AAA">
        <Output TaskParameter="Value" PropertyName="Foo" />
    </CreateProperty>
  </Target>
  <Target Name="Test2" DependsOnTargets="Test">
    <Message Text="Target Test2: Foo=$(Foo)" />
  </Target>
</Project>

刚刚调用第二个目标.

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