嘗試使用EPPlus讀取.xls文件時出錯

以下代碼對.xlsx正常工作，但對於.xls不起作用。我收到了此錯誤消息嘗試使用EPPlus讀取.xls文件時出錯

無法打開包。包是一個OLE複合文檔。如果這是一個加密包，請提供密碼

代碼

string filepath = txtBrowse.Text; 

FileStream stream = System.IO.File.Open(filepath, FileMode.Open, FileAccess.ReadWrite); 
//1. Reading from a binary Excel file ('97-2003 format; *.xls) 
IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream); 

FileInfo newFile = new FileInfo(filepath); 

using (ExcelPackage package = new ExcelPackage(newFile)) 
{ 
    string sheetName = System.DateTime.Now.ToShortDateString(); 

    foreach (OfficeOpenXml.ExcelWorksheet sheet in package.Workbook.Worksheets) 
    { 
     // Check the name of the current sheet 
     if (sheet.Name == sheetName) 
     { 
      package.Workbook.Worksheets.Delete(sheetName); 
      break; // Exit the loop now 
     } 
    } 

    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add(System.DateTime.Now.ToShortDateString()); 
}

如何正確地做到這一點？

來源

2014-10-01 user3151262