如何在C＃中定义全局预处理程序指令

Question

我的问题是如何在一个地方为网站中所有C＃类定义全局预处理器指令。

Answer 1

I am able to find similar question : Preprocessor directives across different files in C#

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DefineConstants>TRACE;DEBUG;LINQ</DefineConstants>
  </PropertyGroup>
</Project>

Answer 2

I don't think there is a way to create a global #define.

You have to create one for each project/assembly in the solution if you need all source code files to know of that #define.

Answer 3

This works for me in webconfig:

<system.codedom>
<compilers>
  <compiler
    language="c#;cs;csharp" extension=".cs"
    compilerOptions="/d:custompreprocessor"
    type="Microsoft.CSharp.CSharpCodeProvider, 
    System, Version=2.0.0.0, Culture=neutral, 
    PublicKeyToken=b77a5c561934e089" />
</compilers>