[ASP.NET] GridView rowspan Cell merge

  protected void getGridMerge(GridView grid)

        {

            int RowSpan = 1;

            int ColCNT = 1; //병합을 해야하는 컬럼 index



            for (int j = 0; j < grid.Columns.Count - 1; j++)

            {

                if (grid.Columns[j].Visible && j == ColCNT)

                {



                    for (int i = grid.Rows.Count - 1; i > 0; i--)//아이템 검색

                    {

                        System.Web.UI.Control bfControl = grid.Rows[i - 1].Cells[j].Controls[1];

                        System.Web.UI.Control afControl = grid.Rows[i].Cells[j].Controls[1];



                        System.Web.UI.WebControls.Label bflbl = bfControl as System.Web.UI.WebControls.Label;

                        System.Web.UI.WebControls.Label aflbl = afControl as System.Web.UI.WebControls.Label;





                        if (bflbl.Text == aflbl.Text)

                        {



                            RowSpan++;



                            grid.Rows[i - 1].Cells[j].RowSpan = RowSpan; //RowSpan



                            // GridView1.Rows[i - 1].Cells[1].BackColor = Color.Gainsboro; //배경색



                            grid.Rows[i].Cells[j].Visible = false;



                            grid.Rows[i].Cells[j].Controls[1].Visible = false;



                        }



                        else



                        { RowSpan = 1; }



                    }

                }

            }

        }