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C# 在NPOI中添加指向图像的链接_C#_Npoi - Fatal编程技术网

C# 在NPOI中添加指向图像的链接

C# 在NPOI中添加指向图像的链接,c#,npoi,C#,Npoi,我使用NOPI生成Excel文件,并使用以下代码将图像添加到Excel: //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 ima

我使用NOPI生成Excel文件,并使用以下代码将图像添加到Excel:

//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);
这是工作得很好,但我现在还需要添加一个链接到这些图片,以便用户可以下载更大的版本


有人能够做到这一点吗?

我担心HSSF的实施不可能做到这一点。afaik,您只能向单元格添加超链接。但是,它可以通过形状、超链接和与
NPOI
officeopenxml实现(XSSF)的关系来实现(请参见)。不过,Excel二进制格式规范支持它们。请参阅第921页的“VtHyperlink的应用程序数据”一节,了解如何执行此操作。您可以基于
NPOI
创建自定义类来添加此功能。