C＃foreachループ内のDataTableに行を追加する

Question

テキストファイルの変数をCSVファイルに変換するデータテーブルに追加しようとしていますが、このエラーが発生しています。このDataTableの」何をすべきかわからないイム、任意の助けをいただければ幸いです、おかげで:)に属し

コード：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Windows.Forms; 
using System.IO; 
using System.Globalization; 
using System.Text; 

namespace Ispy 
{ 
public partial class Form1 : Form 
{ 
    private DataGridView dexRead; 
    DataColumn column; 
    DataTable Data = new DataTable("ISpy"); 
    DataSet dataSet = new DataSet(); 
    DataRow row; 

    public Form1() 
    { 
     InitializeComponent(); 
     ReadFiles(); 
    } 

    private void ReadFiles() 
    { 
     DataTable dataTable; 



     //Location of Dex Files 
     DirectoryInfo DexFiles = new DirectoryInfo(Properties.Settings.Default.Dex_File_Path); 

     //List of file names in Dex File folder 
     List<string> DexNames = new List<string>(); 

     //Location of Input File 
     string ExcelFile = Properties.Settings.Default.Excel_File_Path; 

     //Read Input File 
     string[] ExcelLines = File.ReadAllLines(ExcelFile); 

     //Add names of each file to a list 
     foreach (FileInfo DexFile in DexFiles.GetFiles("*.dex")) 
     { 
      DexNames.Add(DexFile.Name); 
     } 

     //Excel Input and Dex File Data Marriage 
     foreach (string Line in ExcelLines) 
     { 
      row = Data.NewRow(); 
      dataTable = new DataTable(); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.Int32"); 
      column.ColumnName = "Machine Number"; 
      column.ReadOnly = false; 
      column.Unique = true; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Customer"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.Int32"); 
      column.ColumnName = "MEI Total Vend Count"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.Int32"); 
      column.ColumnName = "DEX Total Vend Count"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.Int32"); 
      column.ColumnName = "Stock Sold"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.Int32"); 
      column.ColumnName = "Capacity"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.DateTime"); 
      column.ColumnName = "Next Scheduled Visit Date"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Scheduled Visit In:"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Scheduled Visit Day"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Next Visit Stock Prediction"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Route Number"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Route Driver Name"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Current Stock %"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.DateTime"); 
      column.ColumnName = "Date/Time of DEX"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 
      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Telemetry Provider"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Days since last refill"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      //column = new DataColumn(); 
      //column.DataType = System.Type.GetType("System.String"); 
      //column.ColumnName = "Machine @40% Stock in"; 
      //column.AutoIncrement = false; 

      //Data.Columns.Add(column); 

      //column = new DataColumn(); 
      //column.DataType = System.Type.GetType("System.String"); 
      //column.ColumnName = "Machine @30% Stock in"; 
      //column.AutoIncrement = false; 

      //Data.Columns.Add(column); 

      //column = new DataColumn(); 
      //column.DataType = System.Type.GetType("System.String"); 
      //column.ColumnName = "Optimal Fill Date"; 
      //column.AutoIncrement = false; 

      //Data.Columns.Add(column); 

      //column = new DataColumn(); 
      //column.DataType = System.Type.GetType("System.String"); 
      //column.ColumnName = "Optimal Fill Date In:"; 
      //column.AutoIncrement = false; 

      //Data.Columns.Add(column); 

      //column = new DataColumn(); 
      //column.DataType = System.Type.GetType("System.String"); 
      //column.ColumnName = "Optimal Fill Day"; 
      //column.AutoIncrement = false; 

      //Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Sector"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Products"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 

      column = new DataColumn(); 
      column.DataType = System.Type.GetType("System.String"); 
      column.ColumnName = "Machine Type"; 
      column.AutoIncrement = false; 

      Data.Columns.Add(column); 


      string[] LineInfo = Line.Split(','); 

      //Input File Variables (.Trim('"') is to remove artifacts leftover from Input File) 
      string MachineNumber = LineInfo[0].Trim('"'); 
      string MachineLocation = LineInfo[1].Trim('"'); 
      string TelemetryProvider = LineInfo[7].Trim('"'); 
      string Capacity = LineInfo[9].Trim('"'); 
      string MEIVendCount = LineInfo[10].Trim('"'); 
      string MEICashCount = LineInfo[11].Trim('"'); 
      string LastVisitDate = LineInfo[12].Trim('"'); 
      string MachinePHYSID = LineInfo[13].Trim('"'); 
      string NextScheduledVisit = LineInfo[14].Trim('"'); 
      string RouteName = LineInfo[16].Trim('"'); 
      string DriverName = LineInfo[17].Trim('"'); 
      string MachineModel = LineInfo[18].Trim('"'); 
      string MachineType = LineInfo[19].Trim('"'); 
      string MachineSector = LineInfo[20].Trim('"'); 
      string DEXVendCount = ""; 
      string DEXCashCount = ""; 
      string Difference = ""; 
      string NextScheduledVisitDays = ""; 
      string NextScheduledVisitDay = ""; 
      string NextVisitStockPrediction = ""; 
      string MachineStockSold = ""; 
      string DexNameDate = ""; 
      string DaysSinceLastFill = ""; 
      string MachineStockAt30In = ""; 
      string OptimalFillDate = ""; 
      string OptimalFillDay = ""; 



      //Read each Dex File and retrieve data 
      foreach (string DexName in DexNames) 
      { 
       string[] DexNameData = DexName.Split('_', '.'); 
       int DexPHYSID = Int32.Parse(DexNameData[0]); 
       string dexNameDate = DexNameData[1] + DexNameData[2]; 

       try 
       { 
        //Marriage of Excel File Data and Dex File Data 
        if (Int32.Parse(MachinePHYSID) == DexPHYSID) 
        { 
         //Dex File Variable's 
         string MeterLine = ""; 

         //Calculate location of each Dex File 
         string DexFilePath = DexFiles.ToString() + DexName; 

         //Read all of the Dex File's lines and add to an array 
         string[] DexLines = File.ReadAllLines(DexFilePath); 

         //Find Meter Read line and add to an array 
         foreach (string DexLine in DexLines) 
         { 
          MeterLine = Array.Find(DexLines, 
         element => element.StartsWith("VA1", StringComparison.Ordinal)); 
         } 

         //Split data from Meter Read line 
         if (MeterLine != null) 
         { 
          string[] MeterReads = MeterLine.Split('*'); 
          //Assign Dex values to Dex variables 
          DEXCashCount = MeterReads[1]; 
          DEXVendCount = MeterReads[2]; 
         } 



         DateTime creationDate = DateTime.ParseExact(dexNameDate, "yyyyMMddHHmmss", CultureInfo.InvariantCulture); 
         DateTime nextScheduledVisit = DateTime.ParseExact(NextScheduledVisit, "ddMMyy", CultureInfo.InvariantCulture); 
         TimeSpan scheduleDays = DateTime.Today - nextScheduledVisit; 
         TimeSpan LastVisitDays = DateTime.Today - DateTime.ParseExact(LastVisitDate, "ddMMyy", CultureInfo.InvariantCulture); 

         int Differential = Int32.Parse(DEXVendCount) - Int32.Parse(MEIVendCount); 
         int stockSold = Int32.Parse(Capacity) - Differential; 
         double percent = 0; 
         if (stockSold != 0) 
         { 
          percent = (double)(stockSold * 100)/Int32.Parse(Capacity); 
         } 
         else 
         { 
          percent = 0; 
         } 


         row["Machine Number"] = Int32.Parse(MachineNumber); 
         row["Customer"] = MachineLocation; 
         row["MEI Total Vend Count"] = Int32.Parse(MEIVendCount); 
         row["DEX Total Vend Count"] = Int32.Parse(DEXVendCount); 
         row["Stock Sold"] = Differential; 
         row["Capacity"] = Int32.Parse(Capacity); 
         row["Next Scheduled Visit Date"] = DateTime.ParseExact(NextScheduledVisit, "ddMMyy", CultureInfo.InvariantCulture); 
         row["Scheduled Visit In:"] = scheduleDays.Days.ToString() + " Days"; 
         row["Scheduled Visit Day"] = nextScheduledVisit.DayOfWeek.ToString(); 
         row["Next Visit Stock Prediction"] = "N/A"; 
         row["Route Number"] = RouteName; 
         row["Route Driver Name"] = DriverName; 
         row["Current Stock %"] = percent.ToString() + " %"; 
         row["Date/Time of DEX"] = creationDate; 
         row["Telemetry Provider"] = TelemetryProvider; 
         row["Days since last refill"] = LastVisitDays.Days.ToString() + " Days"; 
         row["Sector"] = MachineSector; 
         row["Products"] = MachineModel; 
         row["Machine Type"] = MachineType; 


         dataTable.ImportRow(row); 


        } 
       } 
       catch(Exception e) 
       { 

       } 
      } 

     } 
     dataSet.Tables.Add(Data); 

     StringBuilder sb = new StringBuilder(); 

     IEnumerable<string> columnNames = Data.Columns.Cast<DataColumn>(). 
              Select(column1 => column.ColumnName); 
     sb.AppendLine(string.Join(",", columnNames)); 

     foreach (DataRow row1 in Data.Rows) 
     { 
      IEnumerable<string> fields = row1.ItemArray.Select(field => field.ToString()); 
      sb.AppendLine(string.Join(",", fields)); 
     } 

     File.WriteAllText(@"\\DC01\Dev\Dexr\Excel Files\Output\test.csv", sb.ToString()); 
    } 

    private void Load_Properties() 
    { 
     string configFile = "config.cfg"; 
     string path = Path.Combine(Environment.CurrentDirectory, @"Data\", configFile); 
    } 
} 

}あなたがデータテーブルを宣言し、一度だけデータ列を追加する必要が

Answer 1

foreachループ外。私はあなたがforeachループでのDataTableのデータにするたびに列を追加参照

 //Prepare Datatable and Add All Columns Here 
     dataTable = new DataTable(); 
     column = new DataColumn(); 
     column.DataType = System.Type.GetType("System.Int32"); 
     column.ColumnName = "Machine Number"; 
     column.ReadOnly = false; 
     column.Unique = true; 
     column.AutoIncrement = false; 

    //Excel Input and Dex File Data Marriage 
    foreach (string Line in ExcelLines) 
    { 
    //Add new row and assign values to columns, no need to add columns again and again in loop which will throw exception 
    row = dataTable.NewRow(); 

    //Map all the values in the columns 
    row["ColumnName"]= value; 

    //At the end just add that row in datatable 
    dataTable.Rows.Add(row); 

     } 

Answer 2

は ので、ループあなただけにして、一度以下のすべての行を列を追加する必要があります