Generate Project Dependency of a CSharp project to dot file, which can be visualized by graphviz

Generate-CsProjDependencyGraph.ps1

$projects = Get-ChildItem -Recurse -Filter *.csproj # find all csharp project recursively from current working path
$dotFile = "dependencies.dot" # file name of generated dot file

$edges = @() # represent edges as an array of objects

foreach ($project in $projects) {
    $projectXml = [xml](Get-Content $project.FullName) # parse .csproj as xml
    $projectDir = Split-Path -Parent $project.FullName 
    $references = $projectXml.Project.ItemGroup.ProjectReference # get project references of $project
    
    # generate graph
    foreach ($reference in $references) {
        $relativePath = $reference.Include
        if ($relativePath) {
            $targetProject = Resolve-Path -Path (Join-Path -Path $projectDir -ChildPath $relativePath) -ErrorAction SilentlyContinue
            if ($targetProject) {
                $edges += "`"$($project.BaseName)`" -> `"$([System.IO.Path]::GetFileNameWithoutExtension($targetProject))`";"
            }
        }
    }
}

# write dotcontent and output to file
$dotContent = "digraph Dependencies {
    rankdir = LR; // Left to Right layout
    node [style = filled; fillcolor = lightgray; fontname = `"Arial`"; fontsize = 12;];
    edge [color = blue; penwidth = 1;];`n" + ($edges -join "`n") + "`n}"
$dotContent | Out-File $dotFile