Cでの金額データテーブル値の書式

Question

誰でも2つの列の金額データタイプを動的にフォーマットできますか？

using System; 
using System.Data; 
using Microsoft.SqlServer.Dts.Runtime; 
using System.Windows.Forms; 
using System.Data.OleDb; 
using System.IO; 
using System.Reflection; 

namespace ST_367d705c54de4e9e9f890350f933c80b.csproj 

{ 
    [Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute] 
    public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase 
    { 
    #region VSTA generated code 
    enum ScriptResults 
    { 
     Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success, 
     Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure 
    }; 
    #endregion 


    public void Main() 
    { 
     string basePath = Dts.Variables["User::VarDirectoryPath"].Value.ToString(); 

     try 
     { 
      OleDbDataAdapter A = new OleDbDataAdapter(); 
      System.Data.DataTable dt = new System.Data.DataTable(); 

      var delimiter = Dts.Variables["User::VarDelimiter"].Value.ToString(); 
      A.Fill(dt, Dts.Variables["User::VarObject"].Value); 

      basePath = Dts.Variables["User::VarDirectoryPath"].Value.ToString(); 
      string filePath = Path.Combine(basePath, (Dts.Variables["User::VarFileName_1"].Value.ToString() 
       + Dts.Variables["User::VarDate"].Value.ToString() + Dts.Variables["User::VarFileExtension_1"].Value.ToString())); 

      int i = 0; 
      StreamWriter sw = null; 

      using (sw = new StreamWriter(filePath, false)) 
      { 
       for (i = 0; i < dt.Columns.Count; i++) 
       { 
        sw.Write(dt.Columns[i].ToString() + Dts.Variables["User::VarDelimiter"].Value.ToString()); 
       } 

       sw.WriteLine(); 

       foreach (DataRow row in dt.Rows) 
       { 
        object[] array = row.ItemArray; 
        for (i = 0; i < array.Length; i++) 
        { 
         object val = array[i]; 
         if (val == "0") 
          sw.Write(string.Format("#.##", val) + delimiter); 
         else 
          sw.Write(val + delimiter); 
        } 

        sw.WriteLine(); 
       } 

       sw.Close(); 
      } 
     } 
     catch (Exception ex) 
     { 
      string file = string.Format("err_{0}.txt", Dts.Variables["User::VarDate"].Value.ToString()); 
      File.WriteAllText(Path.Combine(basePath, file), ex.ToString()); 
     } 

     Dts.TaskResult = (int)ScriptResults.Success; 
    } 
} 
} 

データテーブルには10個のカラムがあり、カラム3,4,5は小数点以下2桁でフォーマットする必要があり、値がゼロまたはnullの場合は0.00を入力する必要があります。ここで

Answer 1

は、小数点以下のフォーマットの例を示します

https://dotnetfiddle.net/da7UoR

using System; 

public class Program 
{ 
    public static void Main() 
    { 
     decimal val1 = 0m; 
     decimal val2 = 125580m; 


     Console.WriteLine(val1.ToString("0.00")); 
     //Output 0.00 

     Console.WriteLine(val2.ToString("0.00")); 
     //Output 125580.00 

     //Money format 
     Console.WriteLine(val1.ToString("C"));  
     //Output $0.00 

     Console.WriteLine(decimalToFormattedString(val1)); 
     //Output 0.00 

     Console.WriteLine(decimalToFormattedString(val2)); 
     //Output 125580.00 
    } 

    public static string decimalToFormattedString(decimal myValue) 
    { 
     return myValue.ToString("0.00"); 
    } 
}