NPOI插入图片到excel指定单元格

代码

//创建一个工作簿
HSSFWorkbookworkbook=newHSSFWorkbook();
//创建一个sheet
ISheetsheet1=workbook.CreateSheet("sheet1");
//设置列宽,excel列宽每个像素是1/256
sheet1.SetColumnWidth(0,18*256);
sheet1.SetColumnWidth(1,18*256);
IRowrowHeader=sheet1.CreateRow(0);//创建表头行
rowHeader.CreateCell(0,CellType.STRING).SetCellValue("生产单号");
rowHeader.CreateCell(1,CellType.STRING).SetCellValue("图片");
DataTabledt=sqlhelperPro.seachData("SELECTtop3PRODID,KTL_PICFROMLong_tmpPIC");
if(dt.Rows.Count>0)
{
introwline=1;//从第二行开始(索引从0开始)
foreach(DataRowdatarowindt.Rows)
{
IRowrow=sheet1.CreateRow(rowline);
//设置行高,excel行高度每个像素点是1/20
row.Height=80*20;
//填入生产单号
row.CreateCell(0,CellType.STRING).SetCellValue(datarow["PRODID"].ToString());
//将图片文件读入一个字符串
byte[]bytes=System.IO.File.ReadAllBytes(datarow["KTL_PIC"].ToString());
intpictureIdx=workbook.AddPicture(bytes,PictureType.JPEG);
HSSFPatriarchpatriarch=(HSSFPatriarch)sheet1.CreateDrawingPatriarch();
//插图片的位置HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2)后面再作解释
HSSFClientAnchoranchor=newHSSFClientAnchor(70,10,0,0,1,rowline,2,rowline+1);
//把图片插到相应的位置
HSSFPicturepict=(HSSFPicture)patriarch.CreatePicture(anchor,pictureIdx);
rowline++;
}
}
//把文件保存到d:\aaa.xls，注意扩展名是.xls不要写成.xlsx
using(Streamstream=File.OpenWrite("d:\aaa.xls"))
{
workbook.Write(stream);
}
//如果要操作.xlsx的excel，引入命名空间usingNPOI.XSSF.UserModel;
//然后把所有的HSS改为XSS(比喻HSSWorkbook->XSSWorkbook)