void addImageFromStream(byte[] data)
{
if (data == null) return;
using (var ms = new MemoryStream(data))
{
var image = Image.FromStream(ms);
_worksheet.Row(_row).Height = (image.Height + 1).Pixel2RowHeight();
_worksheet.Column(_col).Width = _worksheet.Pixel2ColumnWidth(image.Width + 1);
var picture = _worksheet.Drawings.AddPicture("pic" + _row + _col, image);
picture.From.Column = _col - 1;
picture.From.Row = _row - 1;
picture.From.ColumnOff = 2.Pixel2Mtu();
picture.From.RowOff = 2.Pixel2Mtu();
picture.SetSize(image.Width, image.Height);
}
}