MSBuildProjectDirectory

The absolute path of the directory where the project file is located, for example, C:\MyCompany\MyProduct.

MSBuildProjectFile

The complete file name of the project file, including the file name extension, for example, MyApp.proj.

MSBuildProjectExtension

The file name extension of the project file, including the period, for example, .proj.

MSBuildProjectFullPath

The absolute path and complete file name of the project file, for example, C:\MyCompany\MyProduct\MyApp.proj.

MSBuildProjectName

The file name of the project file without the file name extension, for example, MyApp.

MSBuildBinPath

The absolute path of the directory where the MSBuild binaries that are currently being used are located, for example, C:\Windows\Microsoft.Net\Framework\v2.0. This property is useful if you need to refer to files in the MSBuild directory.

MSBuildProjectDefaultTargets

The complete list of targets specified in the DefaultTargets attribute of the Project element. For example, the following Project element would have an MSBuildDefaultTargets property value of A;B;C.

<Project DefaultTargets="A;B;C" >

MSBuildExtensionsPath

The MSBuild folder under the Program Files directory. This location is a useful place to put custom target files. For example, your targets files could be installed at \Program Files\MSBuild\MyFiles\Northwind.targets and then imported in project files with the following XML.

<Import Project="$(MSBuildExtensionsPath)\MyFiles\Northwind.targets"/>

MSBuildStartupDirectory

The absolute path of the directory where MSBuild is invoked.

This allows you to go to any point in a project tree and build everything below that point without having to create "dirs.proj"-type files in every directory. Instead, you have only a single project, like this example called c:\traversal.proj:

<Project …>
    <ItemGroup>
        <ProjectFiles  
           Include="$
           (MSBuildStartupDirectory)
           **\*.csproj"/>
    </ItemGroup>
    <Target Name="build">
        <MSBuild    
        Projects="@(ProjectFiles)"/>
    </Target>
</Project>

Then at any point in the tree you would type:

msbuild c:\traversal.proj