epplus输出成thml

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using OfficeOpenXml;
using System.IO;
using EPPlus.Html;
namespace testepplus
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string zpath = Server.MapPath("/") + "test1.xlsx";
            FileInfo zfile = new FileInfo(zpath);

            using (ExcelPackage excel = new ExcelPackage(zfile,"123"))
            {
                //excel.SaveAs(new FileInfo(Server.MapPath("/") + "test1.xlsx"), "123");
                Response.Write(EPPlus.Html.EPPlusExtensions.ToHtml(excel.Workbook.Worksheets[3]));

            }

        }
    }
}

fx要4.5+ ，需要huget package  epplus ,epplus.html 　　

可以从https://github.com/fitogram/EPPlus.Html 下载源码更改fx为4.0

epplus.html 0.20版本不支持excel里的图片

修改epplus.html添加支持图片的不成熟的源码

using EPPlus.Html.Converters;
using EPPlus.Html.Html;
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Drawing;
namespace EPPlus.Html
{
    public static class EPPlusExtensions
    {
        public static string ToHtml(this ExcelWorksheet sheet)
        {
            int lastRow = sheet.Dimension.Rows;
            int lastCol = sheet.Dimension.Columns;

            HtmlElement htmlTable = new HtmlElement("table");
            htmlTable.Attributes["cellspacing"] = 0;
            htmlTable.Styles["white-space"] = "nowrap";

            //render rows
            for (int row = 1; row <= lastRow; row++)
            {
                ExcelRow excelRow = sheet.Row(row);

                var test = excelRow.Style;
                HtmlElement htmlRow = htmlTable.AddChild("tr");
                htmlRow.Styles.Update(excelRow.ToCss());

                for (int col = 1; col <= lastCol; col++)
                {
                    ExcelRange excelCell = sheet.Cells[row, col];
                    HtmlElement htmlCell = htmlRow.AddChild("td");

                    string cc = getPictureCode(row, col, sheet);
                    if (cc == "")
                    {
                        htmlCell.Content = excelCell.Text;
                    }

                    else
                    {
                        htmlCell.Content = cc;
                    }
                    htmlCell.Styles.Update(excelCell.ToCss());
                }
            }

            return htmlTable.ToString();
        }

        public static string getPictureCode(int row ,int col , ExcelWorksheet sheet)
        {
            foreach (OfficeOpenXml.Drawing.ExcelDrawing excelDrawing in sheet.Drawings)
            {
                OfficeOpenXml.Drawing.ExcelPicture excelPicture = excelDrawing as OfficeOpenXml.Drawing.ExcelPicture;
                if (excelPicture.From.Column+1==col && excelPicture.From.Row+1 == row){
                    return "<img src = \"data:image/jpeg;base64,"  + ImgToBase64String(excelPicture.Image) + "\"/>";
                }

            }
            return "";
        }

        public static CssInlineStyles ToCSS(this ExcelStyles styles)
        {
            throw new NotImplementedException();
        }

        public static string ImgToBase64String(Image image)
        {
            MemoryStream ms = new MemoryStream();
            try
            {

                image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
                byte[] arr = new byte[ms.Length];
                ms.Position = 0;
                ms.Read(arr, 0, (int)ms.Length);
                return Convert.ToBase64String(arr);
            }
            catch (Exception ex)
            {
                return "";
            }
            finally
            {
                ms.Close();
            }
        }

    }

}