Cara: Membuat Formulir Master/Detail Menggunakan Dua Formulir Windows Kontrol DataGridView
Contoh kode berikut membuat formulir master/detail menggunakan dua DataGridView kontrol yang terikat ke dua BindingSource komponen. Sumber data adalah DataSet yang berisi Customers
tabel dan Orders
dari database sampel Northwind SQL Server bersama dengan yang berkaitan dengan DataRelation keduanya melalui CustomerID
kolom.
Satu BindingSource terikat ke tabel induk Customers
dalam himpunan data. Data ini ditampilkan dalam kontrol master DataGridView . Yang lain BindingSource terikat ke konektor data pertama. Properti DataMember kedua BindingSource diatur ke DataRelation nama. Hal ini menyebabkan kontrol detail DataGridView terkait menampilkan baris tabel anak Orders
yang sesuai dengan baris saat ini dalam kontrol master DataGridView .
Untuk penjelasan lengkap tentang contoh kode ini, lihat Panduan: Membuat Formulir Master/Detail Menggunakan Kontrol DataGridView Dua Formulir Windows.
Contoh
using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;
public class Form1 : System.Windows.Forms.Form
{
private DataGridView masterDataGridView = new DataGridView();
private BindingSource masterBindingSource = new BindingSource();
private DataGridView detailsDataGridView = new DataGridView();
private BindingSource detailsBindingSource = new BindingSource();
[STAThreadAttribute()]
public static void Main()
{
Application.Run(new Form1());
}
// Initializes the form.
public Form1()
{
masterDataGridView.Dock = DockStyle.Fill;
detailsDataGridView.Dock = DockStyle.Fill;
SplitContainer splitContainer1 = new SplitContainer();
splitContainer1.Dock = DockStyle.Fill;
splitContainer1.Orientation = Orientation.Horizontal;
splitContainer1.Panel1.Controls.Add(masterDataGridView);
splitContainer1.Panel2.Controls.Add(detailsDataGridView);
this.Controls.Add(splitContainer1);
this.Load += new System.EventHandler(Form1_Load);
this.Text = "DataGridView master/detail demo";
}
private void Form1_Load(object sender, System.EventArgs e)
{
// Bind the DataGridView controls to the BindingSource
// components and load the data from the database.
masterDataGridView.DataSource = masterBindingSource;
detailsDataGridView.DataSource = detailsBindingSource;
GetData();
// Resize the master DataGridView columns to fit the newly loaded data.
masterDataGridView.AutoResizeColumns();
// Configure the details DataGridView so that its columns automatically
// adjust their widths when the data changes.
detailsDataGridView.AutoSizeColumnsMode =
DataGridViewAutoSizeColumnsMode.AllCells;
}
private void GetData()
{
try
{
// Specify a connection string. Replace the given value with a
// valid connection string for a Northwind SQL Server sample
// database accessible to your system.
String connectionString =
"Integrated Security=SSPI;Persist Security Info=False;" +
"Initial Catalog=Northwind;Data Source=localhost";
SqlConnection connection = new SqlConnection(connectionString);
// Create a DataSet.
DataSet data = new DataSet();
data.Locale = System.Globalization.CultureInfo.InvariantCulture;
// Add data from the Customers table to the DataSet.
SqlDataAdapter masterDataAdapter = new
SqlDataAdapter("select * from Customers", connection);
masterDataAdapter.Fill(data, "Customers");
// Add data from the Orders table to the DataSet.
SqlDataAdapter detailsDataAdapter = new
SqlDataAdapter("select * from Orders", connection);
detailsDataAdapter.Fill(data, "Orders");
// Establish a relationship between the two tables.
DataRelation relation = new DataRelation("CustomersOrders",
data.Tables["Customers"].Columns["CustomerID"],
data.Tables["Orders"].Columns["CustomerID"]);
data.Relations.Add(relation);
// Bind the master data connector to the Customers table.
masterBindingSource.DataSource = data;
masterBindingSource.DataMember = "Customers";
// Bind the details data connector to the master data connector,
// using the DataRelation name to filter the information in the
// details table based on the current row in the master table.
detailsBindingSource.DataSource = masterBindingSource;
detailsBindingSource.DataMember = "CustomersOrders";
}
catch (SqlException)
{
MessageBox.Show("To run this example, replace the value of the " +
"connectionString variable with a connection string that is " +
"valid for your system.");
}
}
}
Imports System.Data
Imports System.Data.SqlClient
Imports System.Windows.Forms
Public Class Form1
Inherits System.Windows.Forms.Form
Private masterDataGridView As New DataGridView()
Private masterBindingSource As New BindingSource()
Private detailsDataGridView As New DataGridView()
Private detailsBindingSource As New BindingSource()
<STAThreadAttribute()> _
Public Shared Sub Main()
Application.Run(New Form1())
End Sub
' Initializes the form.
Public Sub New()
masterDataGridView.Dock = DockStyle.Fill
detailsDataGridView.Dock = DockStyle.Fill
Dim splitContainer1 As New SplitContainer()
splitContainer1.Dock = DockStyle.Fill
splitContainer1.Orientation = Orientation.Horizontal
splitContainer1.Panel1.Controls.Add(masterDataGridView)
splitContainer1.Panel2.Controls.Add(detailsDataGridView)
Me.Controls.Add(splitContainer1)
Me.Text = "DataGridView master/detail demo"
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Me.Load
' Bind the DataGridView controls to the BindingSource
' components and load the data from the database.
masterDataGridView.DataSource = masterBindingSource
detailsDataGridView.DataSource = detailsBindingSource
GetData()
' Resize the master DataGridView columns to fit the newly loaded data.
masterDataGridView.AutoResizeColumns()
' Configure the details DataGridView so that its columns automatically
' adjust their widths when the data changes.
detailsDataGridView.AutoSizeColumnsMode = _
DataGridViewAutoSizeColumnsMode.AllCells
End Sub
Private Sub GetData()
Try
' Specify a connection string. Replace the given value with a
' valid connection string for a Northwind SQL Server sample
' database accessible to your system.
Dim connectionString As String = _
"Integrated Security=SSPI;Persist Security Info=False;" & _
"Initial Catalog=Northwind;Data Source=localhost"
Dim connection As New SqlConnection(connectionString)
' Create a DataSet.
Dim data As New DataSet()
data.Locale = System.Globalization.CultureInfo.InvariantCulture
' Add data from the Customers table to the DataSet.
Dim masterDataAdapter As _
New SqlDataAdapter("select * from Customers", connection)
masterDataAdapter.Fill(data, "Customers")
' Add data from the Orders table to the DataSet.
Dim detailsDataAdapter As _
New SqlDataAdapter("select * from Orders", connection)
detailsDataAdapter.Fill(data, "Orders")
' Establish a relationship between the two tables.
Dim relation As New DataRelation("CustomersOrders", _
data.Tables("Customers").Columns("CustomerID"), _
data.Tables("Orders").Columns("CustomerID"))
data.Relations.Add(relation)
' Bind the master data connector to the Customers table.
masterBindingSource.DataSource = data
masterBindingSource.DataMember = "Customers"
' Bind the details data connector to the master data connector,
' using the DataRelation name to filter the information in the
' details table based on the current row in the master table.
detailsBindingSource.DataSource = masterBindingSource
detailsBindingSource.DataMember = "CustomersOrders"
Catch ex As SqlException
MessageBox.Show("To run this example, replace the value of the " & _
"connectionString variable with a connection string that is " & _
"valid for your system.")
End Try
End Sub
End Class
Mengompilasi Kode
Contoh ini membutuhkan:
Referensi ke rakitan System, System.Data, System.Windows.Forms, dan System.XML.
Keamanan .NET Framework
Menyimpan informasi sensitif, seperti kata sandi, dalam string koneksi dapat memengaruhi keamanan aplikasi Anda. Menggunakan Autentikasi Windows (juga dikenal sebagai keamanan terintegrasi) adalah cara yang lebih aman untuk mengontrol akses ke database. Untuk informasi lebih lengkap, lihat Melindungi Informasi Koneksi.
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