如何更改窗体中某些表的字段以显示其他表中的其他字段？

Question

我有一个与NURSE表，MEDICALCENTRE表和PATIENT表有关系的APPOINTMENT表。在下面附加的第一个图像是我的表单，它在数据网格视图中显示来自APPOINTMENT表的所有数据。我想要做的是将patientID，mcID和nurseID的字段名称更改为其他表中的其他字段。我希望patientID显示为PATIENT表中存在的pFirstName。 mcID显示为存在于MEDICALCENTRE表中的mcCentre。并且nurseID显示为NURSE表中存在的nFirstName。以下是我的page_five表单代码。我应该在选择声明中更改什么才能实现我想要显示的内容？

//我的约会表单代码

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; 
using System.Data.SqlClient; 
using System.Configuration; 

namespace GRP_02_03_SACP 
{ 
    public partial class appointment : Form 
    { 

     // Data Table to store employee data 
     DataTable Appointment = new DataTable(); 

     // Keeps track of which row in Gridview 
     // is selected 
     DataGridViewRow currentRow = null; 

     SqlDataAdapter AppointmentAdapter; 

     public appointment() 
     { 
      InitializeComponent(); 
     } 

     private void appointment_Load(object sender, EventArgs e) 
     { 
      LoadMedicalCentreRecords(); 
     } 



     private void LoadMedicalCentreRecords() 
     { 

      //retrieve connection information info from App.config 
      string strConnectionString = ConfigurationManager.ConnectionStrings["sacpConnection"].ConnectionString; 
      //STEP 1: Create connection 
      SqlConnection myConnect = new SqlConnection(strConnectionString); 
      //STEP 2: Create command 
      string strCommandText = "SELECT appointmentID, aDate, aTime, aStatus, aContact, aHeight, aWeight, patientID, mcID, nurseID FROM APPOINTMENT"; 

      AppointmentAdapter = new SqlDataAdapter(strCommandText, myConnect); 

      //command builder generates Select, update, delete and insert SQL 
      // statements for MedicalCentreAdapter 
      SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(AppointmentAdapter); 
      // Empty Employee Table first 
      Appointment.Clear(); 
      // Fill Employee Table with data retrieved by data adapter 
      // using SELECT statement 
      AppointmentAdapter.Fill(Appointment); 

      // if there are records, bind to Grid view & display 
      if (Appointment.Rows.Count > 0) 
       grdApp.DataSource = Appointment; 
     } 

     private void btnUpdate_Click(object sender, EventArgs e) 
     { 
      int modifiedRows = 0; 
      // Get changes 
      DataTable UpdatedTable = Appointment.GetChanges(); 
      if (UpdatedTable != null) 
      { 
       // there are changes 
       // Write modified data to database 
       modifiedRows = AppointmentAdapter.Update(UpdatedTable); 
       // accept changes 
       Appointment.AcceptChanges(); 
      } 
      else 
       MessageBox.Show("there are no changes to update"); 

      if (modifiedRows > 0) 
      { 
       MessageBox.Show("There are " + modifiedRows + " records updated"); 
       LoadMedicalCentreRecords(); 
      } 
     } 


    } 
} 

约会表单 委任表 护士表 MEDICALCENTRE表 患者台上

Answer 1

在你的select语句中，你需要加入你的附加表。并用这些表中的字段替换ID。

它会是这样的

SELECT appointmentID 
    ,aDate 
    ,aTime 
    ,aStatus 
    ,aContact 
    ,aHeight 
    ,aWeight 
    ,p.pFirstName 
    ,m.mcCentre 
    ,n.nFirstName  
FROM APPOINTMENT AS a 
LEFT OUTER JOIN Nurse AS n 
ON a.nurseID = n.NurseID 
Left outer join Patient as p 
on a.patientid = p.patientId 
left outer join medicalcentre as m 
on a.mcID = m.mcid