ExcelをDataTableにインポートすると、OpenXMLを使ってデータが正しく取得されない

Question

私はOpenXMLを使用してExcelをDataTableにインポートしています。私の最初の行は、タイトル情報だけを表示するためにマージされ、2番目の行はヘッダー行です。 ExcelファイルからDataTableを読み込んでいる間、私は間違ったデータを取得しています。空白のセルが存在するまで、DataTableは正しく挿入されます。ブランクセルがある場合、それらは隣接するデータ提示セルに移動している。なぜこうなった？コード内の問題は何ですか？ OpenXMLを使用して適切な方法でデータを取得するのを手伝ってください。一度データをインポートすると、ここに私のExcelファイルとデータテーブルがあります。

のDataTable

Import_Data.xlsx

私のコードサンプルは以下の通りです：

using DocumentFormat.OpenXml.Packaging; 
using DocumentFormat.OpenXml.Spreadsheet; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 

namespace OpenXMLDemo 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      Program p = new Program(); 

      var data = p.ExtractExcel(@"C:\TempData\"); 
     } 

     public System.Data.DataTable ExtractExcel(string fullPath) 
     { 
      var excelFileToImport = Directory.GetFiles(fullPath, "Data_Import.xlsx", SearchOption.AllDirectories); 

      //Create a new DataTable. 
      System.Data.DataTable dt = new System.Data.DataTable(); 

      //Open the Excel file in Read Mode using OpenXML 
      using (SpreadsheetDocument doc = SpreadsheetDocument.Open(excelFileToImport[0], false)) 
      { 
       WorksheetPart titlesWorksheetPart = GetWorksheetPart(doc.WorkbookPart, "Titles"); 

       Worksheet titlesWorksheet = titlesWorksheetPart.Worksheet; 

       //Fetch all the rows present in the worksheet 
       IEnumerable<Row> rows = titlesWorksheet.GetFirstChild<SheetData>().Descendants<Row>(); 

       //Loop through the Worksheet rows 
       foreach (Row row in rows) 
       { 
        //Use the first row to add columns to DataTable. 
        if (row.RowIndex.Value == 1) 
        { 

        } 
        else if (row.RowIndex.Value == 2) 
        { 
         foreach (Cell cell in row.Descendants<Cell>()) 
         { 
          dt.Columns.Add(GetValue(doc, cell)); 
         } 
        } 
        else 
        { 
         //Add rows to DataTable. 
         dt.Rows.Add(); 
         int i = 0; 
         foreach (Cell cell in row.Descendants<Cell>()) 
         { 
          dt.Rows[dt.Rows.Count - 1][i] = GetValue(doc, cell); 
          i++; 
         } 
        } 
       } 
      } 

      return dt; 
     } 
     private string GetValue(SpreadsheetDocument doc, Cell cell) 
     { 
      string value = cell.CellValue.InnerText; 
      if (cell.DataType != null && cell.DataType.Value == CellValues.SharedString) 
      { 
       return doc.WorkbookPart.SharedStringTablePart.SharedStringTable.ChildElements.GetItem(int.Parse(value)).InnerText; 
      } 
      return value; 
     } 

     public WorksheetPart GetWorksheetPart(WorkbookPart workbookPart, string sheetName) 
     { 
      string relId = workbookPart.Workbook.Descendants<Sheet>().First(s => sheetName.Equals(s.Name)).Id; 
      return (WorksheetPart)workbookPart.GetPartById(relId); 
     } 
    } 
} 

Answer 1

私はの助けを借りて、コードの一部を書き直しましたリンクPaulF提供。ありがとう!!!

using DocumentFormat.OpenXml.Packaging; 
using DocumentFormat.OpenXml.Spreadsheet; 
using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 
using System.Text.RegularExpressions; 

namespace OpenXMLDemo 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      Program p = new Program(); 

      System.Data.DataTable data = p.ExtractExcel(@"C:\TempData\"); 
     } 

     public System.Data.DataTable ExtractExcel(string fullPath) 
     { 
      var excelFileToImport = Directory.GetFiles(fullPath, "Data_Import.xlsx", SearchOption.AllDirectories); 

      //Create a new DataTable. 
      System.Data.DataTable dt = new System.Data.DataTable(); 

      //Open the Excel file in Read Mode using OpenXML 
      using (SpreadsheetDocument doc = SpreadsheetDocument.Open(excelFileToImport[0], false)) 
      { 
       WorksheetPart titlesWorksheetPart = GetWorksheetPart(doc.WorkbookPart, "Titles"); 

       Worksheet titlesWorksheet = titlesWorksheetPart.Worksheet; 

       //Fetch all the rows present in the worksheet 
       IEnumerable<Row> rows = titlesWorksheet.GetFirstChild<SheetData>().Descendants<Row>(); 

       foreach (Cell cell in rows.ElementAt(1)) 
       { 
        dt.Columns.Add(GetCellValue(doc, cell)); // this will include 2nd row a header row 
       } 

       //Loop through the Worksheet rows 
       foreach (Row row in rows) 
       { 
        if (row.RowIndex.Value > 2) //this will exclude first two rows 
        { 
         System.Data.DataRow tempRow = dt.NewRow(); 
         int columnIndex = 0; 
         foreach (Cell cell in row.Descendants<Cell>()) 
         { 
          // Gets the column index of the cell with data 
          int cellColumnIndex = (int)GetColumnIndexFromName(GetColumnName(cell.CellReference)); 
          cellColumnIndex--; //zero based index 
          if (columnIndex < cellColumnIndex) 
          { 
           do 
           { 
            tempRow[columnIndex] = ""; //Insert blank data here; 
            columnIndex++; 
           } 
           while (columnIndex < cellColumnIndex); 
          } 
          tempRow[columnIndex] = GetCellValue(doc, cell); 

          columnIndex++; 
         } 
         dt.Rows.Add(tempRow); 
        } 
       } 
      } 
      return dt; 
     } 
     public static string GetCellValue(SpreadsheetDocument document, Cell cell) 
     { 
      SharedStringTablePart stringTablePart = document.WorkbookPart.SharedStringTablePart; 
      if (cell.CellValue == null) 
      { 
       return ""; 
      } 
      string value = cell.CellValue.InnerXml; 
      if (cell.DataType != null && cell.DataType.Value == CellValues.SharedString) 
      { 
       return stringTablePart.SharedStringTable.ChildElements[Int32.Parse(value)].InnerText; 
      } 
      else 
      { 
       return value; 
      } 
     } 
     /// <summary> 
     /// Given a cell name, parses the specified cell to get the column name. 
     /// </summary> 
     /// <param name="cellReference">Address of the cell (ie. B2)</param> 
     /// <returns>Column Name (ie. B)</returns> 
     public static string GetColumnName(string cellReference) 
     { 
      // Create a regular expression to match the column name portion of the cell name. 
      Regex regex = new Regex("[A-Za-z]+"); 
      Match match = regex.Match(cellReference); 
      return match.Value; 
     } 
     /// <summary> 
     /// Given just the column name (no row index), it will return the zero based column index. 
     /// Note: This method will only handle columns with a length of up to two (ie. A to Z and AA to ZZ). 
     /// A length of three can be implemented when needed. 
     /// </summary> 
     /// <param name="columnName">Column Name (ie. A or AB)</param> 
     /// <returns>Zero based index if the conversion was successful; otherwise null</returns> 
     public static int? GetColumnIndexFromName(string columnName) 
     { 
      //return columnIndex; 
      string name = columnName; 
      int number = 0; 
      int pow = 1; 
      for (int i = name.Length - 1; i >= 0; i--) 
      { 
       number += (name[i] - 'A' + 1) * pow; 
       pow *= 26; 
      } 
      return number; 
     } 
     public WorksheetPart GetWorksheetPart(WorkbookPart workbookPart, string sheetName) 
     { 
      string relId = workbookPart.Workbook.Descendants<Sheet>().First(s => sheetName.Equals(s.Name)).Id; 
      return (WorksheetPart)workbookPart.GetPartById(relId); 
     } 
    } 
}