从MsBuild任务返回输出? [英] Return output from an MsBuild task?

问题描述

我想计算一个MsBuild任务中的路径，以供另一个MsBuild任务使用. 做到这一点的最佳方法是什么?

I'd like to calculate a path in a MsBuild task, to be used by another MsBuild task. What is the best way to accomplish this?

设置环境变量，打印到控制台，...?

Setting a environment variable, printing to Console, ...?

推荐答案

使用属性或项目.您的MSBuild会计算路径，将其作为属性返回，然后将此属性用作其他任务的输入.

Use a property or an item. Your MSBuild that calculates the path, return it as a property and you use this property as input for your other task.

public class CalculatePathTask : ITask
{
    [Output]
    public String Path { get; set; }

    public bool Execute()
    {                                   
        Path = CalculatePath();

        return true;
    }
}

<Target Name="CalculateAndUsePath">
  <CalculatePathTask>
    <Output TaskParameter="Path" PropertyName="CalculatePath"/>
  </CalculatePathTask>

  <Message Text="My path is $(CalculatePath)"/>
</Target>

如果您需要在两个MSBuild项目之间传递一个值，则应创建第三个，它将使用MSBuild Task调用另一个，并使用 TargetOutputs 元素取回所需的值.

If you need to pass a value between two MSBuild project, you should create a third one that will call the other using MSBuild Task and use the TargetOutputs element to get back the value that you want.

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