ComboBox or item forcibly remove the ListBox is initialized with the set of even DataSource property item

        /// <the Summary> 
        /// forced removal of the specified item in a list control. 
        /// If the entry list control, increased by the DataSource property. 
        /// </ Summary> 
        /// <param name = "LC"> list of controls to operate </ param> 
        /// <param name = "indexToRemove"> 
        several /// order to remove, from 0 Start. 
        /// If no, SelectedIndex property will be used to populate 
        /// </ param> 
        public static void the RemoveItem (the ListControl LC, indexToRemove int = -1) 
        { 
            int iSelected = -1; 
            String the mDisplay = null; 
            Object DS = null; 

            the IList items = null; 
                items = (LC AS the ComboBox) .Items;
            {
                items = (lc as ListBox).Items;
            }
            if(indexToRemove == -1)
            {
                indexToRemove = lc.SelectedIndex;
            }

            if (indexToRemove != -1)
            {
                iSelected = lc.SelectedIndex;
                mDisplay = lc.DisplayMember;

                if (lc.DataSource == null)
                {
                    items.RemoveAt(indexToRemove);
                    MessageBox.Show(lc.SelectedIndex.ToString());
                }
                else
                {
                    lc.DataSource = DS; 
                    // this operation, erases items 
                    lc.DataSource = null; 
                    // the ListBox / Items in the ComboBox is IList type or array, the array also implements IList interface 
                    IList LST DS = AS IList; 
                    for (int 0 = I; I <lst.Count; I ++) 
                    { 
                        IF (I = indexToRemove)! 
                            the Items.Add (LST [I]); 
                    } 
                } 
            } 
            ! IF (DS = null) 
            { 
                IF (LC IS the ComboBox) 
                { 
                    the ComboBox CBB = lc as ComboBox; 
                    cbb.DataSource = items; 
                    CBB. SelectedIndex = iSelected;
                }
                if (lc is ListBox)
                {
                    ListBox lb = lc as ListBox;
                    lb.DataSource = items;
                    lb.SelectedIndex = iSelected;
                }
                lc.DisplayMember = mDisplay;
            }
        }