System.Windows.Forms.ListView.ReorderColumn C# (CSharp) Method

		internal void ReorderColumn (ColumnHeader col, int index, bool fireEvent)
		{
			if (fireEvent) {
				ColumnReorderedEventHandler eh = (ColumnReorderedEventHandler) (Events [ColumnReorderedEvent]);
				if (eh != null){
					ColumnReorderedEventArgs args = new ColumnReorderedEventArgs (col.Index, index, col);

					eh (this, args);
					if (args.Cancel) {
						header_control.Invalidate ();
						item_control.Invalidate ();
						return;
					}
				}
			}
			int column_count = Columns.Count;

			if (reordered_column_indices == null) {
				reordered_column_indices = new int [column_count];
				for (int i = 0; i < column_count; i++)
					reordered_column_indices [i] = i;
			}

			if (reordered_column_indices [index] == col.Index)
				return;

			int[] curr = reordered_column_indices;
			int [] result = new int [column_count];
			int curr_idx = 0;
			for (int i = 0; i < column_count; i++) {
				if (curr_idx < column_count && curr [curr_idx] == col.Index)
					curr_idx++;

				if (i == index)
					result [i] = col.Index;
				else
					result [i] = curr [curr_idx++];
			}

			ReorderColumns (result, true);
		}