internal Cell(int row, int column, ExcelDocument document)
{
this.document = document;
cellInfo = document.GetCellInfo(row, column);
}
private void WriteStringCell(BinaryWriter writer, CellInfo cell)
{
string value;
if (cell.Value is string)
value = (string)cell.Value;
else
value = cell.Value.ToString();
if (value.Length > 255)
value = value.Substring(0, 255);
ushort[] clData = { BIFF.LabelRecord, 0, 0, 0, 0, 0 };
byte[] plainText = Encoding.GetEncoding(CodePage).GetBytes(value);
int iLen = plainText.Length;
clData[1] = (ushort)(8 + iLen);
clData[2] = (ushort)cell.Row;
clData[3] = (ushort)cell.Column;
clData[4] = (ushort)cell.FXIndex;
clData[5] = (ushort)iLen;
WriteUshortArray(writer, clData);
writer.Write(plainText);
}
internal Cell(int row, int column, ExcelDocument document)
{
this.document = document;
cellInfo = document.GetCellInfo(row, column);
}
private void WriteNumberCell(BinaryWriter writer, CellInfo cell)
{
double dValue = Convert.ToDouble(cell.Value);
ushort[] clData = { BIFF.NumberRecord, 14, (ushort)cell.Row, (ushort)cell.Column, (ushort)cell.FXIndex };
WriteUshortArray(writer, clData);
writer.Write(dValue);
}
private void WriteEmptyCell(BinaryWriter writer, CellInfo cell)
{
ushort[] clData = { 0x0201, 6, 0, 0, 15 };
clData[2] = (ushort)cell.Row;
clData[3] = (ushort)cell.Column;
WriteUshortArray(writer, clData);
}
private void WriteDateCell(BinaryWriter writer, CellInfo cell)
{
DateTime value;
if (cell.Value is DateTime)
{
value = (DateTime)cell.Value;
DateTime baseDate = new DateTime(1899, 12, 31);
TimeSpan ts = value - baseDate;
double days = (double)(ts.Days + 1);
if (days >= 60)
{
days += 1;
}
ushort[] clData = { BIFF.NumberRecord, 14, (ushort)cell.Row, (ushort)cell.Column, (ushort)cell.FXIndex };
WriteUshortArray(writer, clData);
writer.Write(days);
}
}
private void WriteCellValue(BinaryWriter writer, CellInfo cell)
{
if (cell.Value == null)
WriteEmptyCell(writer, cell);
else
if (cell.Value is string)
WriteStringCell(writer, cell);
else
if (IsNumber(cell.Value))
WriteNumberCell(writer, cell);
else
if (cell.Value is DateTime)
WriteDateCell(writer, cell);
else
WriteStringCell(writer, cell);
}
internal CellInfo GetCellInfo(int row, int column)
{
Int64 key = HashCode(row, column);
CellInfo result;
if (cells.TryGetValue(key, out result))
return result;
else
{
if (rows.IndexOf(row) == -1)
rows.Add(row);
result = new CellInfo(this);
result.Row = row;
result.Column = column;
cells.Add(key, result);
return result;
}
}