條件編譯和框架目標(biāo)如果目標(biāo)框架是一個(gè)較新的版本，那么我的項(xiàng)目的代碼可能會(huì)在一些次要的地方得到大幅度的改進(jìn)。我希望能夠更好地利用C#中的條件編譯來根據(jù)需要切換它們。類似于：#if NET40using FooXX = Foo40;#elif NET35using FooXX = Foo35;#else NET20using FooXX = Foo20;#endif這些符號中有免費(fèi)的嗎？是否需要將這些符號作為項(xiàng)目配置的一部分注入？似乎很容易做到，因?yàn)槲覍⒅滥膫€(gè)框架是針對MSBuild的。/p:DefineConstants="NET40"最新情況：我的問題是，人們是如何處理這種情況的？您正在創(chuàng)建不同的配置嗎？您是否通過命令行傳入常量？
3 回答
偶然的你
TA貢獻(xiàn)1841條經(jīng)驗(yàn) 獲得超3個(gè)贊
<PropertyGroup Condition=" '$(Framework)' == 'NET20' "> <DefineConstants>NET20</DefineConstants> <OutputPath>bin\$(Configuration)\$(Framework)</OutputPath></PropertyGroup><PropertyGroup Condition=" '$(Framework)' == 'NET35' "> <DefineConstants>NET35</DefineConstants> <OutputPath>bin\$(Configuration)\$(Framework)</OutputPath></PropertyGroup>
<Framework Condition=" '$(Framework)' == '' ">NET35</Framework>
<Target Name="AfterBuild"> <MSBuild Condition=" '$(Framework)' != 'NET20'" Projects="$(MSBuildProjectFile)" Properties="Framework=NET20" RunEachTargetSeparately="true" /></Target>
<Compile Include="SomeNet20SpecificClass.cs" Condition=" '$(Framework)' == 'NET20' " />
<Reference Include="Some.Assembly" Condition="" '$(Framework)' == 'NET20' " > <HintPath>..\Lib\$(Framework)\Some.Assembly.dll</HintPath></Reference>
慕沐林林
TA貢獻(xiàn)2016條經(jīng)驗(yàn) 獲得超9個(gè)贊
<PropertyGroup>
<DefineConstants Condition=" !$(DefineConstants.Contains(';NET')) ">$(DefineConstants);$(TargetFrameworkVersion.Replace("v", "NET").Replace(".", ""))</DefineConstants>
<DefineConstants Condition=" $(DefineConstants.Contains(';NET')) ">$(DefineConstants.Remove($(DefineConstants.LastIndexOf(";NET"))));$(TargetFrameworkVersion.Replace("v", "NET").Replace(".", ""))</DefineConstants>
</PropertyGroup>#if NETxx
慕后森
TA貢獻(xiàn)1802條經(jīng)驗(yàn) 獲得超5個(gè)贊
<DefineConstants /><DefineDebug>true</DefineDebug><DefineTrace>true</DefineTrace><DebugSymbols>true</DebugSymbols>
<PropertyGroup>
<!-- Adding a custom constant will auto-magically append a comma and space to the pre-built constants. -->
<!-- Move the comma delimiter to the end of each constant and remove the trailing comma when we're done. -->
<DefineConstants Condition=" !$(DefineConstants.Contains(', NET')) ">$(DefineConstants)$(TargetFrameworkVersion.Replace("v", "NET").Replace(".", "")), </DefineConstants>
<DefineConstants Condition=" $(DefineConstants.Contains(', NET')) ">$(DefineConstants.Remove($(DefineConstants.LastIndexOf(", NET"))))$(TargetFrameworkVersion.Replace("v", "NET").Replace(".", "")), </DefineConstants>
<DefineConstants Condition=" $(TargetFrameworkVersion.Replace('v', '')) >= 2.0 ">$(DefineConstants)NET_20_OR_GREATER, </DefineConstants>
<DefineConstants Condition=" $(TargetFrameworkVersion.Replace('v', '')) >= 3.5 ">$(DefineConstants)NET_35_OR_GREATER</DefineConstants>
<DefineConstants Condition=" $(DefineConstants.EndsWith(', ')) ">$(DefineConstants.Remove($(DefineConstants.LastIndexOf(", "))))</DefineConstants></PropertyGroup>- 3 回答
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