/**
* This method attempt to find an already existing HSSFCellStyle that matches
* what you want the style to be. If it does not find the style, then it
* Creates a new one. If it does Create a new one, then it applies the
* propertyName and propertyValue to the style. This is necessary because
* Excel has an upper limit on the number of Styles that it supports.
*
*@param workbook The workbook that is being worked with.
*@param propertyName The name of the property that is to be
* changed.
*@param propertyValue The value of the property that is to be
* changed.
*@param cell The cell that needs it's style changes
*@exception NestableException Thrown if an error happens.
*/
public static void SetCellStyleProperty(Chama.Utils.NPOI.SS.UserModel.ICell cell, HSSFWorkbook workbook, String propertyName, Object propertyValue)
{
Chama.Utils.NPOI.SS.UserModel.ICellStyle originalStyle = cell.CellStyle;
Chama.Utils.NPOI.SS.UserModel.ICellStyle newStyle = null;
Hashtable values = GetFormatProperties(originalStyle);
values[propertyName] = propertyValue;
// index seems like what index the cellstyle is in the list of styles for a workbook.
// not good to compare on!
short numberCellStyles = workbook.NumCellStyles;
for (short i = 0; i < numberCellStyles; i++)
{
Chama.Utils.NPOI.SS.UserModel.ICellStyle wbStyle = workbook.GetCellStyleAt(i);
Hashtable wbStyleMap = GetFormatProperties(wbStyle);
if (wbStyleMap.Equals(values))
{
newStyle = wbStyle;
break;
}
}
if (newStyle == null)
{
newStyle = workbook.CreateCellStyle();
SetFormatProperties(newStyle, workbook, values);
}
cell.CellStyle = (newStyle);
}
/// <summary>
/// Get a specific cell from a row. If the cell doesn't exist,
/// </summary>
/// <param name="row">The row that the cell is part of</param>
/// <param name="column">The column index that the cell is in.</param>
/// <returns>The cell indicated by the column.</returns>
public static Chama.Utils.NPOI.SS.UserModel.ICell GetCell(Chama.Utils.NPOI.SS.UserModel.IRow row, int column)
{
Chama.Utils.NPOI.SS.UserModel.ICell cell = row.GetCell(column);
if (cell == null)
{
cell = row.CreateCell(column);
}
return(cell);
}
/// <summary>
/// Creates a cell, gives it a value, and applies a style if provided
/// </summary>
/// <param name="row">the row to Create the cell in</param>
/// <param name="column">the column index to Create the cell in</param>
/// <param name="value">The value of the cell</param>
/// <param name="style">If the style is not null, then Set</param>
/// <returns>A new HSSFCell</returns>
public static Chama.Utils.NPOI.SS.UserModel.ICell CreateCell(Chama.Utils.NPOI.SS.UserModel.IRow row, int column, String value, HSSFCellStyle style)
{
Chama.Utils.NPOI.SS.UserModel.ICell cell = GetCell(row, column);
cell.SetCellValue(new HSSFRichTextString(value));
if (style != null)
{
cell.CellStyle = (style);
}
return(cell);
}
