/// <summary>
/// Gets the cell at the specified coordinates or creates it if a cell does not exist there.
/// </summary>
/// <param name="sheetData">The sheet data.</param>
/// <param name="columnIndex">Index of the column.</param>
/// <param name="rowIndex">Index of the row.</param>
/// <returns>
/// The new cell.
/// </returns>
public static Cell GetCell(this SheetData sheetData, uint columnIndex, uint rowIndex)
{
while (rowIndex > sheetData.OfType <Row>().Count())
{
sheetData.AddRow();
}
var row = (Row)sheetData.ElementAt((int)rowIndex - 1);
while (columnIndex > row.OfType <Cell>().Count())
{
var paddingCell = new Cell();
paddingCell.SetCellReference((uint)row.OfType <Cell>().Count() + 1, rowIndex);
row.Append(paddingCell);
}
Cell cell = (Cell)row.ElementAt((int)columnIndex - 1);
return(cell);
}