NuGet install.ps1 script that overwrites existing file

install.ps1

param($installPath, $toolsPath, $package, $project)

Write-Host "Setting Application to DowJones.Web.Mvc.HttpApplication..."

# Read the transformed text from the custom template included in the package
$customGlobalAsax = $project.ProjectItems | where { $_.Name -eq "Global.asax.cs.custom" }
$customGlobalAsax.Open()
$customGlobalAsax.Document.Activate()
$customGlobalAsax.Document.Selection.SelectAll(); 
$replacementGlobalAsax = $customGlobalAsax.Document.Selection.Text;
$customGlobalAsax.Delete()
	
# Replace the contents of Global.asax.cs
$globalAsax = $project.ProjectItems | ForEach-Object { $_.ProjectItems } | where { $_.Name -eq "Global.asax.cs" }
if($globalAsax) {
	$globalAsax.Open()
	$globalAsax.Document.Activate()
	$globalAsax.Document.Selection.SelectAll()
	$globalAsax.Document.Selection.Insert($replacementGlobalAsax)
	$globalAsax.Document.Selection.StartOfDocument()
	$globalAsax.Document.Close(0)
} else {
	Write-Host "Global.asax.cs not found -- skipping application base type update"
}