/// <summary>
/// 初始化一个<see cref="ExportBase"/>类型的实例
/// </summary>
/// <param name="version">版本</param>
protected ExportBase(ExcelVersion version)
{
Sheet = new WorkSheet();
_version = version;
_headStyle = CellStyle.Head();
_bodyStyle = CellStyle.Body();
_footStyle = CellStyle.Foot();
}
/// <summary>
/// 初始化导出
/// </summary>
/// <param name="format">导出格式</param>
protected ExportBase(ExportFormat format)
{
Table = new Table();
_format = format;
_headStyle = CellStyle.Head();
_bodyStyle = CellStyle.Body();
_footStyle = CellStyle.Foot();
}