C#插入图片到Excel表格单元格代码详解

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
      {
      }
    }