在NPOI中添加指向图像的链接

Question

我正在使用NOPI生成Excel文件，我使用以下代码将图像添加到Excel中：

//the drawing patriarch will hold the anchor and the master information
HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();

//store the coordinates of which cell and where in the cell the image goes
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0, 0, startRow, 1, startRow + 1);

//types are 0, 2, and 3. 0 resizes within the cell, 2 doesn't
anchor.AnchorType = 2;

var webClient = new WebClient();
byte[] imageBytes = webClient.DownloadData(GetProductImage(manufacturerId, photoName));

//add the byte array and encode it for the excel file
int index = hssfworkbook.AddPicture(imageBytes, PictureType.JPEG);

HSSFPicture signaturePicture = (HSSFPicture)patriarch.CreatePicture(anchor, index);

这很好用但我现在还需要添加这些图像的链接，以便用户可以下载更大的版本。

任何人都能做到这一点吗？