在webapplication中读取Excel中的图片,该如何解决

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Collections;using Excel;using System.Windows.Forms;using System.Drawing;namespace TestExcel{    public partial class _ReadExcel : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            lblResult.Text = string.Empty;            LoadExcel();        }        private void LoadExcel()        {            string folderPath = Server.MapPath("~/App_data/");            string fileName = folderPath + "MenuTemplate.xls";            Excel.Application eApp = null;            Excel.Workbook eBook = null;            Excel.Worksheet eSheet = null;            int startRow = 2;            object Nothing = Type.Missing;            eApp = new Excel.Application();            eBook = eApp.Workbooks.Open(fileName, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing);            for (int sheetIndex = 1; sheetIndex <= eBook.Worksheets.Count; sheetIndex++)            {                eSheet = (Excel.Worksheet)eBook.Worksheets[sheetIndex];                if (eSheet.UsedRange.Rows.Count <= 1)                    continue;                string sheetName = eSheet.Name;                lblResult.Text += System.Environment.NewLine + System.Environment.NewLine + "Sheet Name:" + sheetName;                for (int rowIndex = startRow; rowIndex <= eSheet.UsedRange.Rows.Count; rowIndex++)                {                    string menuName = ((Excel.Range)eSheet.Cells[rowIndex, 'A' - 'A' + rowIndex]).Text.ToString();                    if (menuName == "")                        continue;                    string description = ((Excel.Range)eSheet.Cells[rowIndex, 'B' - 'A' + rowIndex]).Text.ToString();                    lblResult.Text += System.Environment.NewLine + "MenuName Description";                    lblResult.Text += System.Environment.NewLine + menuName + " " + description;                    ////Can only do it in windows application. Need more research                    ////Read Image and save to disk                    //if (eSheet.Shapes.Count > rowIndex - startRow)                    //{                    //    Excel.Shape s = eSheet.Shapes.Item(rowIndex - startRow + 1) as Excel.Shape;                    //    s.CopyPicture(Appearance.Button, Excel.XlCopyPictureFormat.xlBitmap);　//Coty to memory                    //    IDataObject iData = Clipboard.GetDataObject();                    //    if (iData.GetDataPresent(DataFormats.Bitmap))                    //    {                    //        System.Drawing.Bitmap bit = (Bitmap)iData.GetData(DataFormats.Bitmap);                    //        bit.Save(folderPath + rowIndex.ToString() + ".jpg");                    //        bit.Dispose();                    //    }                    //}                }            }            eApp.Quit();            System.Runtime.InteropServices.Marshal.ReleaseComObject(eSheet);            System.Runtime.InteropServices.Marshal.ReleaseComObject(eBook);            System.Runtime.InteropServices.Marshal.ReleaseComObject(eApp);            GC.Collect();        }    }}