dll文件获取及引用：
方法1：通过官网下载dll文件包，并解压。解压文件后，将bin文件夹下的Spire.Xls.dll文件引用到C#程序。
方法2：通过Nuget网站获取dll。
C#代码示例
using Spire.Xls;
using System.Drawing;
namespace InsertImage_XLS
{
class Program
{
static void Main(string[] args)
{
//创建Workbook对象
Workbook workbook = new Workbook();
//获取第一张工作表
Worksheet sheet = workbook.Worksheets[0];
//指定列宽、行高
sheet.Columns[0].ColumnWidth = 50;
sheet.Rows[0].RowHeight = 160;
//加载图片，添加到指定单元格
ExcelPicture picture = sheet.Pictures.Add(1,1, "tp.png");
//指定图片宽度和高度
picture.Width = 300;
picture.Height = 180;
//通过LeftColumnOffset和TopRowOffset属性值设置图片在单元格中的横向、纵向对齐
picture.LeftColumnOffset = 75;
picture.TopRowOffset = 20;
//保存文档
workbook.SaveToFile("result.xlsx", FileFormat.Version2013);
System.Diagnostics.Process.Start("result.xlsx");
}
}
}
图片插入效果：
扩展知识点：
C# 导入图片到Excel单元格
导出Excel功能时需要将数据中含有图片也导出到excel单元格中
public void InsertPicture(string RangeName, string PicturePath, Microsoft.Office.Interop.Excel.Worksheet worksheet)
{
Microsoft.Office.Interop.Excel.Range m_objRange = worksheet.get_Range(RangeName, Type.Missing);
m_objRange.Select();
float PicLeft, PicTop, PicWidth, PicHeight; //距离左边距离，顶部距离，图片宽度、高度
PicTop = Convert.ToSingle(m_objRange.Top);
PicWidth = Convert.ToSingle(m_objRange.MergeArea.Width);
PicHeight = Convert.ToSingle(m_objRange.Height)-10;
PicWidth = Convert.ToSingle(m_objRange.Width)-10;
PicLeft = Convert.ToSingle(m_objRange.Left);//+ (Convert.ToSingle(rng.MergeArea.Width) - PicWidth) / 2;
try
{
//worksheet.Shapes.AddPicture(PicturePath, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, PicLeft, PicTop, PictuteWidth, PictureHeight);
worksheet.Shapes.AddPicture(PicturePath, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, PicLeft, PicTop, 90, 70);
}
catch
{
}
}
