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<h1><a name="kanchor78"></a>Build Time Enhancement Example</h1>
<p>It possible to integrate the db4o enhancements into the build process, using a special <span class="PrimaryAnt">MSBuild</span>-Task. </p>
<h2>Preparation</h2>
<p MadCap:conditions="Primary..NET">The enhance-functionality resides in the Db4oTool.exe, Db4oTool.MSBuild.dll and its dependencies. All these files are in the db4o-distribution. Ensure that all dll-files are in the same directory. Then ensure that the build-script has configured the right location for the Db4oTool.exe etc. For this example in the Db4oTool and dependencies are in the 'lib'-folder of the project</p>
<h2>Create the Enhancement Task</h2>
<p>First we define the enhancement-task. This task will process the <span class="PrimaryArtefact">assembly</span> and enhance it. </p>
<p MadCap:conditions="Primary..NET">You can add this to the existing project-files. The .csproj or .vbproj are actually MSBuild-files. Open them with a XML-Editor and add the needed parts.<br /></p>
<div class="codesnippet" MadCap:conditions="Primary.c#">
<pre class="prettyprint" xml:space="preserve"><UsingTask AssemblyFile=".\lib\Db4oTool.MSBuild.dll" TaskName="Db4oTool.MSBuild.Db4oEnhancerMSBuildTask" />
<ItemGroup>
<Db4oEnhance Include="$(TargetPath)" />
</ItemGroup></pre>
<div class="codesnippet-meta">simple-enhance-example.csproj: Define a task for the enhancement
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<p>And the execute the task after the compilation.</p>
<div class="codesnippet" MadCap:conditions="Primary.c#">
<pre class="prettyprint" xml:space="preserve"><Target Name="AfterBuild">
<Db4oEnhancerMSBuildTask Assemblies="@(Db4oEnhance)" />
</Target></pre>
<div class="codesnippet-meta">simple-enhance-example.csproj: Define a target which runs the task
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<p MadCap:conditions="Primary..NET">Now Visual Studio will automatically run the tasks for each build. You don't need to change anything else.</p>
<p>Often it's practical to have all persistent classes in a separate project or compile unit. Then the enhancement script runs only for this project. This makes it easy to enhance only the classes for the persistent objects.</p>
<p>There are lot of possibilities to tweak and configure the build-time enhancement so that it fits your requirements. <a target="" title="" alt="" MadCap:conditions="Primary..NET" class="MCXref" xrefformat="See "{paratext}""> See "Build Time Enhancement"</a></p>
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