Retrieve Maven version in .Net projet

Maven version in .Net projet

Add a custom attibute "MavenVersion" to the assembly
----------------------------------------------
- Add the file MavenVersion.cs to the project
- Add a line [assembly: MavenVersion("")] in the appropriate AssemblyInfo.cs files


Update attribute during build
-----------------------------
- Using NuGet package manager, add the following dependency to the project: "MSBuildTasks" by LoreSoft
- Add the following line to the project's .csproj file under <Projet> element (edit path as appropriate):

  <UsingTask TaskName="FileUpdate" AssemblyFile="$(SolutionDir)\packages\MSBuildTasks.1.5.0.235\tools\MSBuild.Community.Tasks.dll" />

- Add the following line under the <PropertyGroup> element in the same file:

<MavenVersion Condition=" '$(MavenVersion)' == '' ">N/A</MavenVersion>

- Add the following lines to the same file (customize AssemblyInfo.cs location as appropriate):

 <!-- Custom pre-build task to update the "MavenVersion" attribute of AssemblyInfo.cs -->
  <Target Name="BeforeBuild">
    <ItemGroup>
      <!-- find all the AssemblyInfo.cs files in the solution-->
      <AssemblyInfoFiles Include="$(MSBuildProjectDirectory)\Properties\AssemblyInfo.cs" />
    </ItemGroup>
    <Message Text="MavenVersion: $(MavenVersion)" />
    <FileUpdate Files="@(AssemblyInfoFiles)" Regex="MavenVersion\(.*\)" ReplacementText="MavenVersion(&quot;$(MavenVersion)&quot;)" />
  </Target>

- Pass the value for MavenVersion to the MSBuild command, e.g. if using exec-maven-plugin in your POM file:

          <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.4.0</version>
                <executions>
                    <execution>
                        <id>msbuild-build</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <configuration>
                            <arguments>
                                <argument>/m</argument>
                                <argument>"/p:Configuration=Release"</argument>
                                <argument>"/p:Platform=Any CPU"</argument>
                                <argument>"/p:MavenVersion=${project.version}"</argument>
                                <argument>"/t:Build"</argument>
                            </arguments>
                        </configuration>
                    </execution>
                </executions>
                <configuration>
                    <executable>msbuild</executable>
                </configuration>
            </plugin>


Access the MavenVersion property at runtime
-------------------------------------------
- Add this utility method somewhere:

        public static string MavenVersion(Assembly assembly) {
            object[] attributes = assembly.GetCustomAttributes(typeof(MavenVersionAttribute), false);
            if (attributes.Length == 0)
                return "";
            return ((MavenVersionAttribute) attributes[0]).Version;
        }

- Usage:
    string mavenVersion = MavenVersion(Assembly.GetExecutingAssembly());

MavenVersion.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Oge.Utilitaires {
    public sealed class MavenVersionAttribute : Attribute {
      // Methods
      public MavenVersionAttribute(string mavenVersion)
      {
          this.m_mavenVersion = mavenVersion;
      }
 
      // Properties
      public string Version
      {
         get
         {
             return this.m_mavenVersion;
         }
      }
 
      // Fields
      private string m_mavenVersion;
   }
}