XML : WPF Listview - Difficulty adding Items in List view

I have a list view with grid-columns in UserControl window with file name ListViewModel.xml

      <GridView.Columns>  <GridViewColumn Header="Name" Width="120" DisplayMemberBinding="{Binding Name}" />      <GridViewColumn Header="Size" Width="120" DisplayMemberBinding="{Binding Size}" />       <GridViewColumn Header="Type" Width="110" DisplayMemberBinding="{Binding Type}" />        <GridViewColumn Header="Last Modified" Width="170" DisplayMemberBinding="{Binding Modified}" />        </GridView.Columns>    

and I am populating directory file and folders in list view using this code in file ListViewModel.xml.cs

  public void populateListView(string Path)      {          listView1.Items.Clear();            counter = 0;          DirectoryInfo nodeDirInfo = new DirectoryInfo(Path);            List<UserList> items;            foreach (DirectoryInfo dir in nodeDirInfo.GetDirectories())          {              items = new List<UserList>();              items.Add(new UserList() { Name = dir.Name, Size = "", Type = dir.Extension.ToString(), Modified = dir.LastAccessTime.ToString() });          //      listView1.Items.Add(new UserList() { Name = dir.Name, Size = "", Type = dir.Extension.ToString(), Modified = dir.LastAccessTime.ToString() });              listView1.Items.Add(items);                                                        }                       foreach (FileInfo file in nodeDirInfo.GetFiles())          {              items = new List<UserList>();              items.Add(new UserList() { Name = file.Name, Size = file.Length.ToString() + " bytes", Type = file.Extension, Modified = file.LastAccessTime.ToString() });              listView1.Items.Add(items);                                         }                 }    

while the directory path is sent through TreeViewModel.xml.cs as below

  ListViewModel lm = new ListViewModel();                              lm.populateListView(tagName); // tagName is path of directory    

I bid the data through UserList.cs as

  public class UserList // model containing Properties for ListView  {      public string Name { get; set; }        public string Size { get; set; }        public string Type { get; set; }        public string Modified { get; set; }  }    

But I can't get see any content in the List-View? ANY HELP?