/// <summary>
        /// Handles the corresponding event.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="MapDrawFilterHelperCollectionRenameEventArgs"/> instance containing the event data.</param>
        void _collection_Renamed(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionRenameEventArgs e)
        {
            var index = lstItems.Items.IndexOf(e.Filter);

            if (index >= 0)
            {
                lstItems.RefreshItemAt(index);
            }
        }
        /// <summary>
        /// Raises the <see cref="E:System.Windows.Forms.Form.Closing"/> event.
        /// </summary>
        /// <param name="e">A <see cref="T:System.ComponentModel.CancelEventArgs"/> that contains the event data.</param>
        protected override void OnClosing(CancelEventArgs e)
        {
            if (DesignMode)
            {
                base.OnClosing(e);
                return;
            }

            Collection = null;

            base.OnClosing(e);
        }
        /// <summary>
        /// Raises the <see cref="E:System.Windows.Forms.Form.Closing"/> event.
        /// </summary>
        /// <param name="e">A <see cref="T:System.ComponentModel.CancelEventArgs"/> that contains the event data.</param>
        protected override void OnClosing(CancelEventArgs e)
        {
            if (DesignMode)
            {
                base.OnClosing(e);
                return;
            }

            Collection = null;

            base.OnClosing(e);
        }
 /// <summary>
 /// Handles the corresponding event.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="MapDrawFilterHelperCollectionEventArgs"/> instance containing the event data.</param>
 void _collection_Removed(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionEventArgs e)
 {
     lstItems.Items.Remove(e.Filter);
 }
 /// <summary>
 /// Handles the corresponding event.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="MapDrawFilterHelperCollectionEventArgs"/> instance containing the event data.</param>
 void _collection_Added(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionEventArgs e)
 {
     lstItems.Items.Add(e.Filter);
 }
 /// <summary>
 /// Handles the corresponding event.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="MapDrawFilterHelperCollectionRenameEventArgs"/> instance containing the event data.</param>
 void _collection_Renamed(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionRenameEventArgs e)
 {
     var index = lstItems.Items.IndexOf(e.Filter);
     if (index >= 0)
         lstItems.RefreshItemAt(index);
 }
 /// <summary>
 /// Handles the corresponding event.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="MapDrawFilterHelperCollectionEventArgs"/> instance containing the event data.</param>
 void _collection_Removed(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionEventArgs e)
 {
     lstItems.Items.Remove(e.Filter);
 }
 /// <summary>
 /// Handles the corresponding event.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="MapDrawFilterHelperCollectionEventArgs"/> instance containing the event data.</param>
 void _collection_Added(MapDrawFilterHelperCollection sender, MapDrawFilterHelperCollectionEventArgs e)
 {
     lstItems.Items.Add(e.Filter);
 }