Load & reload (redefine) families in Autodesk Revit

I'm glad to represent you a script for load/reload families in Revit project.
Just run the script from Dynamo player, choose a folder with families and families in window and click the button - all selected families will be reloaded.

Script scheme is:

"WindowsForm Create" node code is:

import clr
clr.AddReference('System.Windows.Forms')
clr.AddReference('System.Drawing')

from System.Drawing import Size, Color, SolidBrush, Rectangle, Point
from System.Windows.Forms import *

import sys
sys.path.append(r"C:\Program Files (x86)\IronPython 2.7\Lib")
import os

from System.IO import Directory, SearchOption

class TESForm(Form):
    def __init__(self):
        self.Text = "Families Loader/ReLoader"
        self.Width = 500
        self.Height = 310
        self.MaximizeBox = False
        self.MinimizeBox = False
        self.ControlBox = False
        self.FormBorderStyle = FormBorderStyle.FixedSingle
        self.ShowIcon = False
        self.StartPosition = FormStartPosition.CenterScreen
        self.TopMost = True
        self.values = []
        self.pathvalue = []
        
        self.label = Label()
        self.label.Text = "--- NO PATH FOUND ---"
        self.label.Location = Point(20, 13)
        self.label.Height = 30
        self.label.Width = 290
        self.label.ForeColor = Color.Red
        
        self.button = Button()
        self.button.Text = "Nothing to reload"
        self.button.Width = 330
        self.button.Location = Point (20, 230)
        self.button.Click += self.setclose
        self.button.Enabled = False
        
        self.button0 = Button()
        self.button0.Text = "Browse..."
        self.button0.Width = 100
        self.button0.Location = Point (360, 10)
        self.button0.Click += self.OnClickedFile
        
        self.button1 = Button()
        self.button1.Text = "Exit"
        self.button1.Width = 100
        self.button1.Location = Point (360, 230)
        self.button1.Click += self.setexit
        
        self.list = ListBox()
        self.list.Size = Size(440, 150)
        self.list.Location = Point(20, 50)
        self.list.SelectionMode = SelectionMode.MultiExtended
        
        self.check = CheckBox()
        self.check.Location = Point(20, 205)
        self.check.Text = 'Select all'
        self.check.Width = 70
        self.check.Enabled = False
        self.check.CheckedChanged += self.checkedChanged
        
        self.Controls.Add(self.label)
        self.Controls.Add(self.button)
        self.Controls.Add(self.button0)
        self.Controls.Add(self.button1)
        self.Controls.Add(self.list)
        self.Controls.Add(self.check)
        

    def setclose(self, sender, event):
        for idx in self.list.SelectedIndices:
            self.values.append(self.pathvalue[idx])
        self.Close()
        
    def setexit(self, sender, event):
        self.values = 'Exit'
        self.Close()
        
    def checkedChanged(self, sender, args):
        if sender.Checked:
            for i in range(self.list.Items.Count):
                self.list.SetSelected(i, True)
        else:
            self.list.ClearSelected()
            self.list.SetSelected(0, True)
    
    def OnClickedFile(self, sender, events):
        dialog = FolderBrowserDialog()
        if (dialog.ShowDialog(self) == DialogResult.OK):
            self.label.Text = dialog.SelectedPath
            if Directory.Exists(dialog.SelectedPath):
                files = Directory.GetFiles(dialog.SelectedPath, '*.rfa', SearchOption.TopDirectoryOnly)
                for i in files:
                    fname = os.path.basename(i)
                    truname = os.path.splitext(fname)[0]
                    self.list.Items.Add(truname)
                self.list.SetSelected(0, True)
            else:
                files = []
            if len(files) != 0:
                 self.button.Enabled = True
                 self.check.Enabled = True
                 self.label.ForeColor = Color.Blue
                 self.button.Text = "Load/ReLoad Families form path"
                 self.pathvalue = files
            else:
                 self.list.Items.Clear()
                 self.button.Enabled = False
                 self.label.ForeColor = Color.Red
                 self.button.Text = "Nothing to reload"
                 self.check.Enabled = False

form = TESForm()
form.ShowDialog()
result = form.values
OUT = result

"FamReloader" node code is:

import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument

elements = IN[0]

class FamilyOption(IFamilyLoadOptions) :
 def OnFamilyFound(self, familyInUse, overwriteParameterValues) :
  overwriteParameterValues = True
  return True

 def OnSharedFamilyFound(self, sharedFamily, familyInUse, source, overwriteParameterValues) :
  return True

if IN[0] != 'Exit':
 TransactionManager.Instance.EnsureInTransaction(doc)
 try:
  for element in elements :
   doc.LoadFamily(element, FamilyOption())
   OUT = 'Families was loaded/reloaded'
 except:
  pass
 TransactionManager.Instance.TransactionTaskDone()
else:
 OUT = 'Exit'

"ShowDialog" node code is:

import clr
clr.AddReferenceByName("RevitAPI")
clr.AddReferenceByName("RevitAPIUI")

from Autodesk.Revit import *
from Autodesk.Revit.UI import *
from Autodesk.Revit.UI.Macros import *
from Autodesk.Revit.DB import *
from Autodesk.Revit.UI.Selection import *

dialog = TaskDialog('Families Loader/ReLoader')
result = IN[0]
msg = IN[1]
dialog.MainIcon = TaskDialogIcon.TaskDialogIconNone
dialog.TitleAutoPrefix = False
dialog.AllowCancellation = True
dialog.MainContent = result + ': ' + str(msg)
if IN[0] != 'Exit':
 dialog.Show()

Download script for Dynamo - Link