PowerShell script to force "Copy Local" in .csproj files.

SetCopyLocal.ps1

[CmdletBinding()]
param(
    [Parameter(Mandatory=$true)]
    $RootDir,
    [string[]]$Assemblies = @(
        'System.Net.Http.Formatting', 
        'System.Web.Http', 
        'System.Web.Http.WebHost',
        'System.Web.Mvc'
    )
)

function isMatchingReference {
    param($reference)

    if ($reference -eq $null) {
        return $false
    }

    $include = ($reference.Include -split ',')[0]

    return $Assemblies -contains $include
}

$ErrorActionPreference = "Stop"

$projects = Get-ChildItem $RootDir -Include *.csproj -Recurse

$projects | % {
    $modified = $false

    [xml]$project = Get-Content $_

    $references = $project.Project.ItemGroup.Reference | ? { $_ -ne $null }

    # ensure that copy local is set for each matching assembly reference
    $references | ? { isMatchingReference($_) } | % {
        if ($_.Private -eq $null) {
            $privateElement = $project.CreateElement("Private", $null)
            $_.AppendChild($privateElement) | Out-Null
        }

        if ($_.Private -ne 'True') {
            $_.Private = 'True'

            $modified = $true
        }
    }

    if ($modified) {
        # get rid of unnecessary empty "xmlns" attributes
        $project = [xml] $project.OuterXml.Replace(' xmlns=""', '')

        $project.save($_)
    }
}