Add Column to View in SharePoint using PowerShell

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

#configuration parameters
$WebURL="https://portal.crescent.com/projects"
$ListName="Project Milestones"
$ViewName="All Items"
$FieldInternalName="ProjectDescription"

Function Add-FieldToView([Microsoft.SharePoint.SPList]$List, [String]$ViewName, [string]$FieldInternalName)
{
    #Get the view
    $View = $List.Views[$ViewName]
    #To Get the Default View: List.DefaultView

    if($view -eq $Null) {write-host "View doesn't exists!" -f Red; return}

    #Check if view has the specific field already!
    if(!$view.ViewFields.ToStringCollection().Contains($FieldInternalName))
    {
        $View.ViewFields.Add($FieldInternalName)
        #To Delete a field from view: $View.ViewFields.delete($FieldInternalName)
        $View.Update()
        write-host "Field added to View!" -f Green
    }
    else
    {
        write-host "Field Already Exists in the view!" -f Red
    }
}

#Get the Web and List
$Web= Get-SPWeb $WebURL
$List = $web.Lists.TryGetList($ListName)

#If List Exists
if ($List )
{
    #Call the function
    Add-FieldToView $List $ViewName $FieldInternalName
}