dynamically binf object list to listbox

back code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using Xceed.Wpf.Toolkit;
using System.Runtime.CompilerServices;
using System.ComponentModel;


namespace listbox

{
    public partial class MainWindow : Window
    {
      public static List<string>vml= new List<string>{"sagar","kautubh","gaurav","abhi"};
         

        public class User
        {
            public string filename { get; set; }
            public List<CheckVM> temp = new List<CheckVM>();
             public string Filename
                                  {
                                  get { return filename; }
                                  set { this.filename = value; }
                                  }

            public User(string fname)
             {
                 filename = fname;
                 for (int i = 0; i < vml.Count; i++)
                  {
                   temp.Add(new CheckVM(vml[i]));  
                  }                     
              }
      }
     

        public class CheckVM : INotifyPropertyChanged  
        {
            public event PropertyChangedEventHandler PropertyChanged;
            public string vmname;
           public string VmName
              {
              get
               {
                 return this.vmname;
               }

            set
            {
                if (value != this.vmname)
                {
                    this.vmname = value;
                    NotifyPropertyChanged();
                }
            }
        }
           public bool ischecked;
           public bool IsCheck
           {
               get
               {
                   return this.ischecked;
               }

               set
               {
                   if (value != this.ischecked)
                   {
                       this.ischecked = value;
                       NotifyPropertyChanged();
                   }
               }
           }
            
           public CheckVM(string name)
            {
                this.vmname = name;
                this.ischecked = false; 
            }
           public CheckVM(string name,bool val)
           {
               this.vmname = name;
               this.ischecked= val;

           }

           public CheckVM()
           {
               // TODO: Complete member initialization
           }
          
            private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
           {
               if (PropertyChanged != null)
               {
                   PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
               }
           }
                      
        }

        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = this;  
            listbox1.Items.Add("Morgan Stanley");
            listbox1.Items.Add("Nvidia");
            listbox1.Items.Add("ADP");
            listbox1.Items.Add("Sokrati");
            listbox1.Items.Add("Clarice");        
      }


        

        public void show1(User u)
        {
            if (listbox3.Items.Count > 0)
            {
                listbox3.Items.Clear();
            } 
            foreach (CheckVM v in u.temp)
            {
                listbox3.Items.Add(new CheckVM() { vmname = v.vmname,ischecked=v.ischecked});
            }
         
        }
        private void cb_check(object sender, RoutedEventArgs e)
        {

        }
        private void CheckBox_Unchecked(object sender, RoutedEventArgs e)
        {
            CheckBox a = sender as CheckBox;
            bool x = (bool)a.IsChecked;
            //int i= 
        }

        private void plus_popup(object sender, SelectionChangedEventArgs args)
        {

            User x = ((sender as ListBox).SelectedItem as User);
            show1(x);
            if (listbox3.Visibility.Equals(Visibility.Hidden))
            {
                listbox3.Visibility = Visibility.Visible;
            }
        }

        

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {

            foreach (string item in listbox1.SelectedItems)
            {
                User u = new User(item);
                listbox2.Items.Add(u);
            }
                      
            listbox1.SelectedItems.Clear();
            foreach (User item2 in listbox2.Items)
            {
                listbox1.Items.Remove(item2.filename);
            }
        }
       
   
        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
          REMOVE();
        }


        private void REMOVE()
        {
            List<string> temp = new List<string>();
            foreach (User item3 in listbox2.SelectedItems)
            {
                listbox1.Items.Add(item3.filename);
                temp.Add(item3.filename);
            }
            listbox2.SelectedItems.Clear();
           
            List<int>num =new List <int>();

            int cnt = 0;
            foreach(User u in listbox2.Items)
            {
    
                foreach (string item in temp)
                {
                    if (item == u.filename)
                    {
                        num.Add(cnt);
                        break;
                    }
                }
                cnt++;
            }
            for(int i=num.Count -1;i>=0;i--)
            {
                listbox2.Items.RemoveAt(num[i]);
            }
        }

        
    }
}

xaml file

<Window x:Class="listbox.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit" 
        Title="MainWindow" Height="350" Width="743">
    <Window.Resources>
        <DataTemplate x:Key="UserTemplate" >
            <StackPanel Orientation="Horizontal">
                <TextBlock  Text="{Binding Path=filename}" Width="100"/>
            </StackPanel>
        </DataTemplate>

        <DataTemplate x:Key="UserTemplate1" >
            <StackPanel Orientation="Horizontal">
                 <CheckBox  Name="cb" IsThreeState="False" Content="{ Binding vmname}" Unchecked="CheckBox_Unchecked" Checked="cb_check" IsChecked="{Binding Path=ischecked, Mode=TwoWay }" />
            </StackPanel>
        </DataTemplate>
    </Window.Resources>
    

    <Grid HorizontalAlignment="Left" Width="733" RenderTransformOrigin="0.514,0.556">

        <ListBox Name="listbox3" Visibility="Hidden" Height="134" Width="156" Margin="515,82,62,104" ItemsSource="{Binding  ElementName=listbox2, Path=SelectedItem, BindsDirectlyToSource=True }" IsSynchronizedWithCurrentItem="True" ItemTemplate="{StaticResource UserTemplate1}"  />

        <ListBox Name="listbox2" SelectionChanged="plus_popup" IsSynchronizedWithCurrentItem="True" ItemTemplate="{StaticResource UserTemplate}"
         Margin="268,82,0,0" HorizontalAlignment="Left" Height="188" VerticalAlignment="Top" Width="169" SelectionMode="Single" RenderTransformOrigin="0.517,0.505"/>

        <ListBox x:Name="listbox1" HorizontalAlignment="Left" Height="188" Margin="10,82,0,0" VerticalAlignment="Top" Width="144" SelectionMode="Multiple"/>
        <Button Content="&gt;&gt;" HorizontalAlignment="Left" Margin="195,127,0,0" VerticalAlignment="Top" Width="37" Height="28" Click="Button_Click_1" FontWeight="Bold" FontSize="16"/>
        <Button Content="&lt;&lt;" HorizontalAlignment="Left" Margin="195,197,0,0" VerticalAlignment="Top" Width="37" Height="31" Click="Button_Click_2" FontWeight="Bold" FontSize="16" RenderTransformOrigin="0.5,0.5">
            <Button.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform AngleX="-1.591"/>
                    <RotateTransform/>
                    <TranslateTransform X="-0.472"/>
                </TransformGroup>
            </Button.RenderTransform>
        </Button>
        <Label Content="List 1" HorizontalAlignment="Left" Margin="50,51,0,0" VerticalAlignment="Top"/>
        <Label Content="List 2" HorizontalAlignment="Left" Margin="302,51,0,0" VerticalAlignment="Top"/>
    </Grid>
</Window>