/// <summary>
/// 该节点是否为某一级节点的最后一个子结点
/// </summary>
/// <param name="level">节点层级</param>
/// <returns></returns>
private bool IsLastCell(int level)
{
int row = DataGridView.Rows.GetNextRow(RowIndex, DataGridViewElementStates.None);
if (row == -1)
{
return(true);
}
DataGridViewGroupCell cel = DataGridView.Rows[row].Cells[0] as DataGridViewGroupCell;
return(cel.GroupLevel == level);
}
public int AddChildCellRange(DataGridViewGroupCell cellP, DataGridViewGroupCell[] cells)
{
bool needRedraw = false;
if (childCells == null)
{
//需要画一个加号
childCells = new List <DataGridViewGroupCell>();
needRedraw = true;
}
foreach (DataGridViewGroupCell cell in cells)
{
childCells.Add(cell);
cell.groupLevel = groupLevel + 1;
cell.ParentCell = cellP;
}
if (needRedraw)
{
DataGridView.InvalidateCell(this);
}
return(childCells.Count);
}
/// <summary>
/// 添加子结点
/// </summary>
/// <param name="cell"></param>
/// <returns></returns>
public int AddChildCell(DataGridViewGroupCell cellP, DataGridViewGroupCell cell)
{
return(AddChildCellRange(cellP, new DataGridViewGroupCell[] { cell }));
}
public DataGridViewGroupColumn()
{
CellTemplate = new DataGridViewGroupCell();
ReadOnly = true;
}
