Custom Paging implementation in WPF toolkit datagrid

//For storing the current page number.
        private int paging_PageIndex = 1;

        //For storing the Paging Size. It could be n number. I am specifying 2 for test purpose.
       private int paging_NoOfRecPerPage = 2;

        //To check the paging direction according to use selection.

        private enum PagingMode { Next = 1, Previous =2 };



private void CustomPaging(int mode)         
        {
            int totalRecords = dt.Rows.Count;
            int pageSize = paging_NoOfRecPerPage;
            if (totalRecords <= pageSize) { return; }
            switch (mode) 
            {
                case (int)PagingMode.Next:
                    if (totalRecords > (paging_PageIndex * pageSize)) 
                    {
                        DataTable tmpTable = new DataTable();
                        tmpTable = dt.Clone();
                        if (totalRecords >= ((paging_PageIndex * pageSize) + pageSize))
                        {
                            for (int i = paging_PageIndex * pageSize; i < ((paging_PageIndex * pageSize) + pageSize); i++)
                            {
                                tmpTable.ImportRow(dt.Rows[i]);
                            }

                        }
                        else
                        {
                            for (int i = paging_PageIndex * pageSize; i < totalRecords; i++)
                            {
                                tmpTable.ImportRow(dt.Rows[i]);
                            }
                        }
                        paging_PageIndex += 1;
                        channelGrid.ItemsSource = tmpTable.DefaultView;
                        tmpTable.Dispose();
                    }
                    break;
                
                case (int)PagingMode.Previous:
                    if (paging_PageIndex > 1)
                    {
                        DataTable tmpTable = new DataTable();
                        tmpTable = dt.Clone();
                        paging_PageIndex -= 1;
                        for (int i = ((paging_PageIndex * pageSize) - pageSize); i < (paging_PageIndex * pageSize); i++)
                        {
                            tmpTable.ImportRow(dt.Rows[i]);
                        }
                        channelGrid.ItemsSource = tmpTable.DefaultView;
                        tmpTable.Dispose();
                    }
                    break;
            }
        }


Call CustomPaging((int)PagingMode.Next) funtion from Button click event.

you just need to add buttons in the designer and handle  click events.