#region <<單元格合併配置>>
        public struct MergeCellsParam
        {
            public int iStartCellColumn;
            public int iStartCellRow;
            public int iEndCellColumn;
            public int iEndCellRow;
            public string strText;

            public MergeCellsParam(int _iStartColumn, int _iStartRow, int _iEndColumn, int _iEndRow)
            {
                iStartCellColumn = _iStartColumn;
                iStartCellRow = _iStartRow;
                iEndCellColumn = _iEndColumn;
                iEndCellRow = _iEndRow;
                strText = null;
            }
        }
        public List<MergeCellsParam> mMergeCells = new List<MergeCellsParam>();
#endregion
 

 #region 獲取單元格合併所需的行列
        public void UpdateMergeCells()
        {
            mMergeCells.Clear();
            int Sum = 0;
            for (int i = 0; i < sql.Upname.Count; i++)
            {
                if (sql.RootCount[i] > 1)
                {
                    mMergeCells.Add(new MergeCellsParam(0, Sum, 0, Sum + sql.RootCount[i] - 1));
                    mMergeCells.Add(new MergeCellsParam(1, Sum, 1, Sum + sql.RootCount[i] - 1));
                    Sum += sql.RootCount[i];
                }
                else
                    Sum++;
            }
        }
#endregion
 

#region <<單元格合併>>
        private void GridView_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {
            for (int i = 0; i < mMergeCells.Count; i++)
            {
                if (mMergeCells[i].iStartCellRow == mMergeCells[i].iEndCellRow
                    && mMergeCells[i].iStartCellColumn == mMergeCells[i].iEndCellColumn)
                {
                    return;
                }
                var _mergeParam = mMergeCells[i];
                if (e.ColumnIndex >= _mergeParam.iStartCellColumn && e.ColumnIndex <= _mergeParam.iEndCellColumn
                    && e.RowIndex >= _mergeParam.iStartCellRow && e.RowIndex <= _mergeParam.iEndCellRow)
                {
                    FindRange(e, this.GridView);
                }
            }
        }
#endregion
 

     #region 找到上下行內容相同的行
        private void FindRange(DataGridViewCellPaintingEventArgs e, DataGridView myGrid)
        {
            if (e.CellStyle.Alignment == DataGridViewContentAlignment.NotSet)
            {
                e.CellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
            }
            Brush gridBrush = new SolidBrush(GridView.GridColor);
            SolidBrush backBrush = new SolidBrush(e.CellStyle.BackColor);
            SolidBrush fontBrush = new SolidBrush(e.CellStyle.ForeColor);
            int UpRows = 0;
            int DownRows = 0;
            int count = 0;
            int cellwidth = e.CellBounds.Width;
            Pen gridLinePen = new Pen(gridBrush);
            if (e.Value != null)
            {
                string curValue = e.Value == null ? "" : e.Value.ToString().Trim();
                //MessageBox.Show("curValue:" + curValue);
                #region 獲取下面的行數
                for (int i = e.RowIndex; i < myGrid.Rows.Count; i++)
                {
                    if (myGrid.Rows[i].Cells[e.ColumnIndex].Value != null)
                    {
                        if (myGrid.Rows[i].Cells[e.ColumnIndex].Value.ToString().Equals(curValue))
                        {
                            //this.Rows[i].Cells[e.ColumnIndex].Selected = this.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected;

                            DownRows++;
                            if (e.RowIndex != i)
                            {
                                cellwidth = cellwidth < myGrid.Rows[i].Cells[e.ColumnIndex].Size.Width ? cellwidth : myGrid.Rows[i].Cells[e.ColumnIndex].Size.Width;
                            }
                        }
                        else
                        {
                            break;
                        }
                    }
                }
                #endregion
                #region 獲取上面的行數
                for (int i = e.RowIndex; i > 0; i--)
                {
                    if (myGrid.Rows[i].Cells[e.ColumnIndex].Value != null)
                    {
                        if (myGrid.Rows[i].Cells[e.ColumnIndex].Value.ToString().Equals(curValue))
                        {
                            //this.Rows[i].Cells[e.ColumnIndex].Selected = this.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected;

                            UpRows++;
                            if (e.RowIndex != i)
                            {
                                cellwidth = cellwidth < myGrid.Rows[i].Cells[e.ColumnIndex].Size.Width ? cellwidth : myGrid.Rows[i].Cells[e.ColumnIndex].Size.Width;
                            }
                        }
                        else
                        {
                            break;
                        }
                    }
                }
                count = DownRows + UpRows - 1;
                if (count < 1)
                {
                    return;
                }
            }

            //if (GridView.Rows[e.RowIndex].Selected)
           // {
                //backBrush.Color = e.CellStyle.SelectionBackColor;
            backBrush.Color = Color.White;
            fontBrush.Color = e.CellStyle.SelectionForeColor;
            // }

            //以背景色填充
            e.Graphics.FillRectangle(backBrush, e.CellBounds);
            
            //畫字串
            if(e.RowIndex < sql.RootCount[0])
            {
                PaintingFont(e, cellwidth, UpRows, DownRows, count-1);
            }
            else
                PaintingFont(e, cellwidth, UpRows, DownRows, count);


            if (DownRows == 1)
            {
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left, e.CellBounds.Bottom - 1, e.CellBounds.Right - 1, e.CellBounds.Bottom - 1);
                count = 0;
            }
            // 畫右邊線
            e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1, e.CellBounds.Top, e.CellBounds.Right - 1, e.CellBounds.Bottom);

            e.Handled = true;
            #endregion
        }
#endregion

#region 畫字串
        // cellwidth = e.CellBounds.Width;
        // UpRows上面相同的行數
        // DownRows下面相同的行數
        // count 總行數
        private void PaintingFont(System.Windows.Forms.DataGridViewCellPaintingEventArgs e, int cellwidth, int UpRows, int DownRows, int count)
        {
            SolidBrush fontBrush = new SolidBrush(e.CellStyle.ForeColor);
            int fontheight = (int)e.Graphics.MeasureString(e.Value.ToString(), e.CellStyle.Font).Height;
            int fontwidth = (int)e.Graphics.MeasureString(e.Value.ToString(), e.CellStyle.Font).Width;
            int cellheight = e.CellBounds.Height;

            if (e.CellStyle.Alignment == DataGridViewContentAlignment.MiddleCenter)
            {
                e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + (cellwidth - fontwidth) / 2, e.CellBounds.Y - cellheight * (UpRows - 1) + (cellheight * count - fontheight) / 2);
            }
        }
#endregion