void AddPieChart(int rowNum = 4)
{
System.Byte[] bytes;
fileName _fileName;
NPOI.HSSF.UserModel.HSSFPatriarch patriarch;
NPOI.HSSF.UserModel.HSSFClientAnchor anchor;
NPOI.HSSF.UserModel.HSSFPicture pict;
int png;
_fileName =@"C:\lmlogo.png";
if(_fileName)
bytes = System.IO.File::ReadAllBytes(_fileName);
if (bytes)
{
png = hssfworkbook.AddPicture(bytes,NPOI.SS.UserModel.PictureType::PNG);
patriarch = sheet.CreateDrawingPatriarch();
anchor = new NPOI.HSSF.UserModel.HSSFClientAnchor( 0, 0, 1000, 0, 0, 0 , rowNum, 1);
//##处理照片位置,【图片左上角为(col, row)第row+1行col+1列,右下角为( col +1, row +1)第 col +1+1行row +1+1列,宽为100,高为50
pict = patriarch.CreatePicture(anchor, png);
// pict.Resize();这句话一定不要,这是用图片原始大小来显示
}
}