Preciso entender esse código:

[joaofla123 3]

É uma classe que mescla as células de cada coluna se o conteudo for igual.

 

Eu quero fazer com que a cada tres linhas do gridview ele execute essa mesclagem, porque se nao mistura com resultados errados, mas como sou iniciante nao entendo o codigo abaixo o suficiente pra saber como fazer isso.

 

tambem gostaria de fazer a mesclagem so ate a coluna de index 8.

 

se alguem entender esse codigo por favor me diga o q cada trecho faz. obrigado!!!

public class ASPxGridViewCellMerger {
    ASPxGridView grid;
    Dictionary<GridViewDataColumn, TableCell> mergedCells = new Dictionary<GridViewDataColumn, TableCell>();
    Dictionary<TableCell, int> cellRowSpans = new Dictionary<TableCell, int>();


    public ASPxGridViewCellMerger(ASPxGridView grid) {
        this.grid = grid;
        Grid.HtmlRowCreated += new ASPxGridViewTableRowEventHandler(grid_HtmlRowCreated);
        Grid.HtmlDataCellPrepared += new ASPxGridViewTableDataCellEventHandler(grid_HtmlDataCellPrepared);
    }


    public ASPxGridView Grid { get { return grid; } }
    void grid_HtmlDataCellPrepared(object sender, ASPxGridViewTableDataCellEventArgs e) {
        //add the attribute that will be used to find which column the cell belongs to
        e.Cell.Attributes.Add("ci", e.DataColumn.VisibleIndex.ToString());
         
        if (cellRowSpans.ContainsKey(e.Cell)) {
            e.Cell.RowSpan = cellRowSpans[e.Cell];
        }
    }
    void grid_HtmlRowCreated(object sender, ASPxGridViewTableRowEventArgs e) {
        if (Grid.GetRowLevel(e.VisibleIndex) != Grid.GroupCount) return;
        for (int i = e.Row.Cells.Count - 1; i >= 0; i--) {
            DevExpress.Web.ASPxGridView.Rendering.GridViewTableDataCell dataCell = e.Row.Cells[i] as DevExpress.Web.ASPxGridView.Rendering.GridViewTableDataCell;
            if (dataCell != null) {
                MergeCells(dataCell.DataColumn, e.VisibleIndex, dataCell);
            }
        }
    }


    void MergeCells(GridViewDataColumn column, int visibleIndex, TableCell cell) {
        bool isNextTheSame = IsNextRowHasSameData(column, visibleIndex);
        
        if (isNextTheSame) {
            if (!mergedCells.ContainsKey(column)) {
                mergedCells[column] = cell;
            }
        }


        if (IsPrevRowHasSameData(column, visibleIndex)) {
            ((TableRow)cell.Parent).Cells.Remove(cell);
            if (mergedCells.ContainsKey(column)) {
                TableCell mergedCell = mergedCells[column];
                if (!cellRowSpans.ContainsKey(mergedCell)) {
                    cellRowSpans[mergedCell] = 1;
                }
                cellRowSpans[mergedCell] = cellRowSpans[mergedCell] + 1;
            }
        }
        if (!isNextTheSame) {
            mergedCells.Remove(column);
        }
    }
    bool IsNextRowHasSameData(GridViewDataColumn column, int visibleIndex) {
        //is it the last visible row
        if (visibleIndex >= Grid.VisibleRowCount - 3)
            return false;


        return IsSameData(column.FieldName, visibleIndex, visibleIndex + 1);
    }
    bool IsPrevRowHasSameData(GridViewDataColumn column, int visibleIndex) {
        ASPxGridView grid = column.Grid;
        //is it the first visible row
        if (visibleIndex <= Grid.VisibleStartIndex)
            return false;


        return IsSameData(column.FieldName, visibleIndex, visibleIndex - 1);
    }
    bool IsSameData(string fieldName, int visibleIndex1, int visibleIndex2) {
        // is it a group row?
        if (Grid.GetRowLevel(visibleIndex2) != Grid.GroupCount)
            return false;


        return object.Equals(Grid.GetRowValues(visibleIndex1, fieldName), Grid.GetRowValues(visibleIndex2, fieldName));
    }

Obs: Não é preguiça. Sou iniciante em C#.

[KhaosDoctor 242]

E qual é o problema?