Verify and Install Windows Features and Optional Features

EnsureWindowsFeaturesPresent.ps1

function xEnsurePresent-WindowsFeature([string] $FeatureName)
{

$gwf = Get-WindowsFeature -Name $FeatureName
if($gwf.InstallState -eq 'Installed')
{
    Write-Host "$FeatureName already Installed"
    
}
else
{
    Write-Host "$FeatureName Installing"
    Install-WindowsFeature -Name $FeatureName -
}
}

xEnsurePresent-WindowsFeature -FeatureName NET-Framework-45-ASPNET
xEnsurePresent-WindowsFeature -FeatureName NET-HTTP-Activation
xEnsurePresent-WindowsFeature -FeatureName Web-ASP
xEnsurePresent-WindowsFeature -FeatureName Web-Asp-Net
xEnsurePresent-WindowsFeature -FeatureName Web-Asp-Net45



function xEnsurePresent-WindowsOptionalFeature([string] $FeatureName)
{

$wf = Get-WindowsOptionalFeature -Online -FeatureName $FeatureName
if($wf.State -eq 'Enabled')
{
    Write-Host "$FeatureName already running"
    
}
else
{
    Write-Host "$FeatureName Starting"
    Enable-WindowsOptionalFeature -Online -FeatureName $FeatureName -NoRestart
}
}

xEnsurePresent-WindowsOptionalFeature -FeatureName IIS-WebServerRole