项目级条件编译常量

Question

我在尝试构建 VB.NET 项目时遇到项目级条件编译常量错误。 上面写着：

project-level conditional compilation constant 'VB_VER=9.0,TARGET="exe",CONFIG="Debug",_MyType="Console",PLATFORM="AnyCPU",DEBUG;^^ ^^ TRACE' not valid: Character is not valid.

我最近把它升级到了最新版本（从2.0），我感觉这和它有关系。

这是什么意思？ 我一无所知...

这是我的项目文件：

<Project DefaultTargets="Build" ToolsVersion="3.5" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <ProjectType>local</ProjectType>
    <ProjectVersion>7.10.3077</ProjectVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{5810CBEF-671E-4845-BBE3-BC3470C3EE18}</ProjectGuid>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <AssemblyName>svchost</AssemblyName>
    <DefaultClientScript>JScript</DefaultClientScript>
    <DefaultHTMLPageLayout>Grid</DefaultHTMLPageLayout>
    <DefaultTargetSchema>IE50</DefaultTargetSchema>
    <DelaySign>false</DelaySign>
    <OutputType>Exe</OutputType>
    <FileUpgradeFlags>
    </FileUpgradeFlags>
    <MyType>Console</MyType>
    <UpgradeBackupLocation>
    </UpgradeBackupLocation>
    <OldToolsVersion>0.0</OldToolsVersion>
    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
    <IsWebBootstrapper>false</IsWebBootstrapper>
    <PublishUrl>publish\</PublishUrl>
    <Install>true</Install>
    <InstallFrom>Disk</InstallFrom>
    <UpdateEnabled>false</UpdateEnabled>
    <UpdateMode>Foreground</UpdateMode>
    <UpdateInterval>7</UpdateInterval>
    <UpdateIntervalUnits>Days</UpdateIntervalUnits>
    <UpdatePeriodically>false</UpdatePeriodically>
    <UpdateRequired>false</UpdateRequired>
    <MapFileExtensions>true</MapFileExtensions>
    <ApplicationRevision>0</ApplicationRevision>
    <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
    <UseApplicationTrust>false</UseApplicationTrust>
    <BootstrapperEnabled>true</BootstrapperEnabled>
    <StartupObject>Sub Main</StartupObject>
    <ApplicationManifest>My Project\app.manifest</ApplicationManifest>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <OutputPath>bin\Debug\</OutputPath>
    <DocumentationFile>svchost.xml</DocumentationFile>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <DebugSymbols>true</DebugSymbols>
    <NoStdLib>false</NoStdLib>
    <Optimize>false</Optimize>
    <WarningLevel>4</WarningLevel>
    <NoWarn>42016,42017,42018,42019,42032</NoWarn>
    <DebugType>full</DebugType>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <OutputPath>bin\Release\</OutputPath>
    <DocumentationFile>svchost.xml</DocumentationFile>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <DefineConstants>TRACE</DefineConstants>
    <DebugSymbols>false</DebugSymbols>
    <NoStdLib>false</NoStdLib>
    <Optimize>true</Optimize>
    <WarningLevel>4</WarningLevel>
    <NoWarn>42016,42017,42018,42019,42032</NoWarn>
    <DebugType>none</DebugType>
  </PropertyGroup>
  <ItemGroup>
     <!-- Removed Files Here -->
  </ItemGroup>
  <ItemGroup>
     <!-- Removed Files Here -->
  </ItemGroup>
  <ItemGroup>
         <!-- Removed Files Here -->
  </ItemGroup>
  <ItemGroup>
         <!-- Removed Files Here -->
  </ItemGroup>
  <ItemGroup>
         <!-- Removed Files Here -->
  </ItemGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.VisualBasic.targets" />
  <PropertyGroup>
    <PreBuildEvent>
    </PreBuildEvent>
    <PostBuildEvent>
    </PostBuildEvent>
  </PropertyGroup>
</Project>

Answer 1

在 .vbproj 文件中，您必须使用逗号分隔定义常量，这与 .csproj 文件中使用的分号不同。 因此，如果您想要 DEBUG 和 TRACE 标志，您需要：

<DefineConstants>DEBUG,TRACE</DefineConstants>

Answer 2

我有同样的问题。 但是当我使用“，”作为常量之间的分隔符而不是“;”之后，它起作用了。

因此，请尝试仅使用“，”（逗号）。

Answer 3

我将这个块中的 DefineConstants 标签更改为：

 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <OutputPath>bin\Debug\</OutputPath>
    <DocumentationFile>svchost.xml</DocumentationFile>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <DebugSymbols>true</DebugSymbols>
    <NoStdLib>false</NoStdLib>
    <Optimize>false</Optimize>
    <WarningLevel>4</WarningLevel>
    <NoWarn>42016,42017,42018,42019,42032</NoWarn>
    <DebugType>full</DebugType>
  </PropertyGroup>

它

<DefineConstants>DEBUG</DefineConstants>

的效果非常好！