用C＃讀取Excel xlsb文件

Question

我的項目有一個新的需求來讀取各種類型的Excel文件。我能夠使用Codeplex的ExcelDataReader DLL讀取.xls和.xlsx文件。問題是當我嘗試讀取.xlsb文件時。 ExcelDataReader無法讀取.xlsb文件。除了在基於服務器的應用程序中使用Microsoft.Office.Interop.Excel dll以外，是否還有其他有效的方式來讀取xlsb文件？

IExcelDataReader excelReader = fileName.EndsWith(".xlsx") 
               ? ExcelReaderFactory.CreateOpenXmlReader(stream) 
               : ExcelReaderFactory.CreateBinaryReader(stream); 
while (excelReader.Read()) 
{ 
    //myStuff read the file 
} 

Answer 1

LinqToExcel支持xlsb以及xls和xlsx。

這個庫的基本用法是這樣的：

using (var excelQueryFactory = new ExcelQueryFactory(filePath)) 
{ 
    //access your worksheet LINQ way 
    var worksheet = excelQueryFactory.Worksheet("worksheetName").Where(...); 
} 

More detailed tutorial

Answer 2

最快和最簡單的解決方法是使用你已經取得了各項產品。

只需使用Excel Interop進行保存即可將xlsb轉換爲xlsx，然後照常讀取新文件。通常我不會推薦使用Excel Interop，因爲它非常慢，但對於只是轉換文件而言，它足夠快（假設條件正常）。

我建議您儘可能使用Office Open XML SDK來讀取生成的xml文件。

這是一個我早些時候：

public class XlConversion 
{ 
    public static void MarshalReleaseComObject(object comObject) 
    { 
     if ((comObject != null) && (Marshal.IsComObject(comObject))) 
     { 
      Marshal.ReleaseComObject(comObject); 
     } 
    } 

    public static void ConvertTsvToExcel(string inputFullPath, string outputExcelFullPath, bool deleteInput = false) 
    { 
     if (String.IsNullOrWhiteSpace(inputFullPath)) 
     { 
      throw new ArgumentOutOfRangeException(nameof(inputFullPath)); 
     } 

     if (String.IsNullOrWhiteSpace(outputExcelFullPath)) 
     { 
      throw new ArgumentOutOfRangeException(nameof(outputExcelFullPath)); 
     } 

     var inputFilename = new FileInfo(inputFullPath); 
     var xlFilename = new FileInfo(outputExcelFullPath); 

     const int maxSupportedXlFilenameLength = 218; 

     if (xlFilename.FullName.Length > maxSupportedXlFilenameLength) 
     { 
      throw new ArgumentOutOfRangeException(nameof(outputExcelFullPath), outputExcelFullPath, ("The full path filename (" + xlFilename.FullName.Length + " characters) is longer than Microsoft Excel supports (" + maxSupportedXlFilenameLength + " characters)")); 
     } 

     var excelApp = new Application(); 
     Workbooks wbs = excelApp.Workbooks; 
     Workbook wb = wbs.Open(inputFilename.FullName); 

     wb.SaveAs(xlFilename.FullName, XlFileFormat.xlOpenXMLWorkbook); 

     try 
     { 
      wb.Close(); 
      //excel.Quit(); 
     } 
     finally 
     { 
      GC.Collect(); 
      GC.WaitForPendingFinalizers(); 
      GC.Collect(); 
      GC.WaitForPendingFinalizers(); 

      MarshalReleaseComObject(wb); 
      MarshalReleaseComObject(wbs); 
      MarshalReleaseComObject(excelApp); 
     } 

     if (deleteInput) 
     { 
      File.Delete(inputFilename.FullName); 
     } 
    } 
}