C＃數據表網格計算

Question

我一直在試圖建立一個簡單的網格計算在C＃Winform DataTable中，用戶輸入起始值，結束值，傳播起始值和傳播結束值（在下面的代碼中，我只是硬編碼值）。從那裏，表格建立一個計算值的矩陣。

例如（初始結構）：

價格ABCD

計算值：

1 - A，1 - B， 1-C，1-D， 2-A，2-B，2-C，2-D， 3-A，3- B，3 - C，3 - D， 4 - A，4 - B，4 - C，4 - D，

下面的網格是我第一次嘗試建立一個計算網格 - 這將是一個更好的解決方案這比下面？：

static DataTable GetCalcGrid() 
     { 

      DataTable table = new DataTable(); 
      table.Clear(); 
      DataColumn column; 
      DataRow row; 

      try 
      { 
       //double minValue = (double)startingPrice.Value; 
       double minValue = 1; 
       //double maxValue = (double)endingPrice.Value; 
       double maxValue = 2; 
       //double incrementValue = (double)incrementPrice.Value; 
       double incrementValue = .25; 

       //double minSpreadValue = (double)spreadRangeLow.Value; 
       double minSpreadValue = -.50; 
       //double maxSpreadValue = (double)spreadRangeHigh.Value; 
       double maxSpreadValue = .50; 
       //double incrementSpreadValue = (double)spreadIncrement.Value; 
       double incrementSpreadValue = .25; 

       column = new DataColumn(); 
       column.DataType = System.Type.GetType("System.Int32"); 
       column.ColumnName = "N*"; 
       column.AutoIncrement = true; 
       column.AutoIncrementSeed = 1; 
       column.AutoIncrementStep = 1; 
       table.Columns.Add(column); 

       column = new DataColumn(); 
       column.DataType = System.Type.GetType("System.Double"); 
       column.ColumnName = "Price"; 
       table.Columns.Add(column); 

       for (double x = minSpreadValue; x < maxSpreadValue + incrementSpreadValue; x += incrementSpreadValue) 
       { 
        double value; 
        value = x; 

        column = new DataColumn(); 
        column.DataType = System.Type.GetType("System.Double"); 
        column.ColumnName = value.ToString("0.000"); 
        table.Columns.Add(column); 
        table.Columns[value.ToString("0.000")].Expression = "(([Price] + (" + value + ")))"; 
        //table.Columns[value.ToString("0.000")].Expression = " " + OP.black("C",4,Convert.ToDouble("(([Price] + (" + value + ")))"),.32,15,365,.003,1).ToString() + " "; 
       } 

       for (double i = minValue; i < maxValue + incrementValue; i += incrementValue) 
       { 
        row = table.NewRow(); 
        row["Price"] = i; 
        table.Rows.Add(row); 
       } 

      } 
      catch (Exception ex) { MessageBox.Show("! " + ex); } 
      finally { } 

      return table; 
     } 

    private void toolStripButton1_Click(object sender, EventArgs e) 
    { 
     dataGridView1.DataSource = GetCalcGrid(); 
    } 

Answer 1

你可以嘗試這樣的事：

public class Matrix : List<MatrixEntry> 
    { 
    } 

    public class MatrixEntry 
    { 
     public double Price { get; private set; } 

     public double Value1 
     { 
      get { return (Price - 0.5); } 
     } 

     public double Value2 
     { 
      get { return (Price - 0.25); } 
     } 

     public double Value3 
     { 
      get { return Price; } 
     } 

     public double Value4 
     { 
      get { return (Price + 0.25); } 
     } 

     public double Value5 
     { 
      get { return (Price + 0.5); } 
     } 

     public MatrixEntry(double price) 
     { 
      Price = price; 
     } 
    } 

static Matrix GetMatrixCalcGrid() 
     { 
      var matrix = new Matrix(); 

      try 
      { 
       double minValue = 1; 
       double maxValue = 2; 
       double incrementValue = .25; 

       for (double i = minValue; i < maxValue + incrementValue; i += incrementValue) 
       { 
        var entry = new MatrixEntry(i); 
        matrix.Add(entry); 
       } 

      } 
      catch (Exception ex) { Console.WriteLine("! " + ex); } 
      finally { } 

      return matrix; 
     } 

這是你在找什麼？

注：我明明硬編碼的計算..但你可以添加一些額外的屬性來存儲用戶輸入和修改屬性返回正確的值。我的例子的主要觀點是，我認爲它比使用DataTable更有效。