list view check box in wpf

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WPF

please solve this problem.
there are several check boxes in a list view,
now if a check box is selected and saved it is saved properly.
but if checked and then unchecked and then saved, then also the checked value is stored in the data base. this should not have happened since the check box was unchecked before saving.


My checked code............

List<string> checkedEventsID = new List<string>();

       List<string> checkedEventsName = new List<string>();

private void check1_Checked(object sender, RoutedEventArgs e)
      {


         string ID = Convert.ToString(((System.Windows.Controls.CheckBox)sender).Tag);
          string Name = string.Empty;
          Name = Convert.ToString(((System.Windows.Controls.CheckBox)sender).Content);
          checkedEventsID.Add(ID);
          checkedEventsName.Add(Name);
      }

private void check1_UnChecked(object sender, RoutedEventArgs e)
      {

}

check1 in in list view.