C#流转换成图片后如何加载到单元格中

请教C#中流转换成图片后如何加载到单元格

需要保存成文件，然后将图片路径给ImageCellType。或者将图片转换为base64的string

1. FarPoint.Web.Spread.ImageCellType imagecell = new FarPoint.Web.Spread.ImageCellType();
   
2. imagecell.ImageUrl = "img\\fplogo.jpg";
   
3. imagecell.ImageAlign=System.Web.UI.WebControls.ImageAlign.Right;
   
4. imagecell.TextOnRight = true;
   
5. imagecell.CssClass = "CssStyle1";
   
6. FpSpread1.Sheets[0].Cells[0, 0].CellType = imagecell;
   

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