MSBuild 无法识别/理解属性

Question

我创建了以下简单的 msbuild 项目文件，但输出很奇怪（请参阅 Message 标记结果）。

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Upload" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <DirectoryToUpload>Directory\</DirectoryToUpload>
    <RemoteServer>my.remote.server.com</RemoteServer>
  </PropertyGroup>
  <Target Name="Upload">
    <Message Text="Uploading from directory ${DirectoryToUpload} to server ${RemoteServer}" />
  </Target>
</Project>

还有输出。

D:\Project\Source>C:\Windows\Microsoft.NET\Framework64\v4.0.30319\msbuild.exe ftpupload.proj /target:Upload
Microsoft (R) Build Engine Version 4.0.30319.1
[Microsoft .NET Framework, Version 4.0.30319.239]
Copyright (C) Microsoft Corporation 2007. All rights reserved.

Build started 11/19/2011 4:22:28 PM.
Project "D:\Project\Source\ftpupload.proj" on node 1 (Upload target(s)).
Upload:
  Uploading from directory ${DirectoryToUpload} to server ${RemoteServer}
Done Building Project "D:\Project\Source\ftpupload.proj" (Upload target(s)).

为什么 MSbuild 显示属性名称，而不是它的值？

附：整个事情都是在TeamCity下运行的，但不管是谁启动msbuild.exe，结果都是一样的。

Answer 1

该属性语法不正确。正确的语法应该是带括号的：

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Upload" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <DirectoryToUpload>Directory\</DirectoryToUpload>
    <RemoteServer>my.remote.server.com</RemoteServer>
  </PropertyGroup>
  <Target Name="Upload">
    <Message Text="Uploading from directory $(DirectoryToUpload) to server $(RemoteServer)" />
  </Target>
</Project>