无法将DataTable与另一个C＃相关联

Question

所以，我知道你通过相关的列关联DataTable ...虽然我有一个小问题。

实施例：

父表 - 客户 - > {客户名称，customerCode（PK），telphoneCell，...等}

子表 - 订单 - > {customerCode，orderCode（ PK）dateStart，dateEnd，...等}

现在......

孙表（S） - ManufacturingSheet - > {panelNumber，panelWidth，panelHeight，... etc}

还有一些文本框显示零件的数量，如螺栓&坚果，我从用户输入计算。

那么，如何将整个表单保存为单个客户订单呢？客户名称，代码和日期详细信息等也出现在此表单上。

即使我可以链接一个texbox到订单表，我将如何链接到表单的其余部分？

这里是代码显示所有网格&文本框，我想被存储在数据库：

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

namespace PalisadeWorld 
{ 
public partial class ManufacturingSheet : Form 
{ 
    public ManufacturingSheet() 
    { 
     InitializeComponent(); 
    } 

    //all the calculated sizes, and parts 
    public string[] dis_Width { get; set; } 
    public string[] dis_Height { get; set; } 
    public string[] dis_Comments { get; set; } 
    public int[] dis_PaleQty { get; set; } 
    public int[] dis_Blocks { get; set; } 
    public int dis_num { get; set; } 

    //Method to Convert a string array to int array 
    private int[] ConvertArray(string[] s, int rows) 
    { 
     int[] intArray = new int[rows]; 

     for (int x = 0; x < rows; x++) 
     { 
      intArray[x] = Convert.ToInt32(s[x]); 
     } 
     return intArray; 
    } 

    //Methods returning other parts calculated with sizes above 
    private int GetTotalBearers(string[] bearers, int rows) 
    { 
     int i; 
     int totalBearers = 0; 
     int[] temp = ConvertArray(bearers, rows); 
     for (i = 0; i < rows; i++) 
     { 
      if (temp[i] >= 2200) 
      { 
       totalBearers += 6; 
      } 
      else totalBearers += 4; 
     } 
     return totalBearers; 
    } 
    private int GetTotalPales(int[] pales, int rows) 
    { 
     int i; 
     int totalPales = 0; 
     for (i = 0; i < rows; i++) 
     { 
      totalPales += pales[i]; 
     } 
     return totalPales; 
    } 
    private int GetTotalBoltsNutsBrackest(int[] pales, int rows) 
    { 
     int totalBolts = GetTotalPales(pales, rows) + (rows * 4); 
     return totalBolts; 
    } 

    private void ManufacturingSheet_Load(object sender, EventArgs e) 
    { 
     //displaying number of respective parts 
     numBearers.Text = string.Format("{0}", GetTotalBearers(dis_Height, dis_num)); 
     numPales.Text = string.Format("{0}", GetTotalPales(dis_PaleQty, dis_num)); 
     numBrackets.Text = numBearers.Text; 
     numBoltsNutsWashers.Text = string.Format("{0}", GetTotalBoltsNutsBrackest(dis_PaleQty, dis_num)); 

     int i; 
     int no = 0; 

     //displaying sizes etc in DataGrid 
     for(i = 0; i < dis_num; i++) 
     { 
      // Create a new row. 
      PalisadeWorldDatabaseDataSet.ManufacturingSheetRow newOutputRow; 

      newOutputRow = palisadeWorldDatabaseDataSet1.ManufacturingSheet.NewManufacturingSheetRow(); 

      newOutputRow.no = ++no ; 
      newOutputRow.cutSize = string.Format("{0}", dis_Width[i]); 
      newOutputRow.block = string.Format("{0}", dis_Blocks[i]); 
      newOutputRow.height = string.Format("{0}", dis_Height[i]); 
      newOutputRow.palesQty = string.Format("{0}", dis_PaleQty[i]); 
      newOutputRow.comments = string.Format("{0}", dis_Comments[i]); 

      // Add the row to the Region table 
      this.palisadeWorldDatabaseDataSet1.ManufacturingSheet.Rows.Add(newOutputRow); 

      // Save the new row to the database 
      this.manufacturingSheetTableAdapter.Update(this.palisadeWorldDatabaseDataSet1.ManufacturingSheet); 

      this.manufacturingSheetTableAdapter.Fill(this.palisadeWorldDatabaseDataSet1.ManufacturingSheet); 
     }   
    } 
} 

}

Answer 1

DataAdapter的允许您定义多个表和它们之间的关系，以及定义插入并更新每个表的命令（以及选择命令和删除命令）。

http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldataadapter.aspx

对于GUI的问题，通常你会的OrderItems表（通常命名的OrderDetail），你会用一个DataGrid捕获订单上的一个或多个项目：

 OrderItems 
     OrderID 
     ItemID typically references a Parts table 
     Quantity 
     UnitPrice