public void getphases()
        {
         foreach (var item in categoryList)
                    {

                        ListBox lb = new ListBox();
                        //  lb.SelectionChanged += lb_SelectionChanged;
                        lb.Margin = new Thickness(0, 0, 0, 0);
                        lb.Height = 550d;
                        lb.Name = "InnerListBox";


                        lb.PreviewMouseLeftButtonDown += lb_PreviewMouseLeftButtonDown;
                        lb.AllowDrop = true;
                        lb.GiveFeedback += lb_GiveFeedback;

                        lb.DragEnter += lb_DragEnter;
                        lb.Drop += lb_Drop;
                        lb.DragOver += lb_DragOver;
                        lb.BorderThickness = new Thickness(0, 0, 0, 0);
                        BrushConverter bs = new BrushConverter();

                        lb.Background = (Brush)bs.ConvertFromString("#FFF3800C");

                        ListBoxItem lbi = new ListBoxItem();
                        lbi.Margin = new Thickness(0, 0, 0, 0);
}



//this event is not firing
    void lb_DragEnter(object sender, DragEventArgs e)
            {
                if (_dragged == null || e.Data.GetDataPresent(DataFormats.Text, true) == false)
                    e.Effects = DragDropEffects.None;
                else
                    e.Effects = DragDropEffects.All;
            }


    //Drag&Drop not working
            void lb_DragOver(object sender, DragEventArgs e)
            {

                e.Effects = DragDropEffects.Copy;

            }

<ListBox   x:Name="icTodoList" local2:ProjectTabTavlaViewModel.ListBox="{Binding ElementName=icTodoList}" Background="#FFF3800C"  Canvas.Top="25" Height="600" Width="{Binding ElementName=gd,Path=ActualWidth}" BorderThickness="0" BorderBrush="{x:Null}">
                            <ListBox.Resources>
                                <SolidColorBrush  x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="#FFF3800C"  Opacity="0.2"/>
                                <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}"  Color="#FFF3800C" />


                            </ListBox.Resources>
                            <ListBox.ItemsPanel>
                                <ItemsPanelTemplate>
                                    <WrapPanel IsItemsHost="True" Orientation="Horizontal"  />
                                </ItemsPanelTemplate>
                            </ListBox.ItemsPanel>
                        </ListBox>