HOW TO：使用 Windows Form BindingNavigator 控制項在資料集中移動
建置資料驅動的應用程式時，您會經常需要對使用者顯示資料集合。 與 BindingSource 元件結合的 BindingNavigator 控制項，針對在集合中移動以及循序顯示項目這兩項，提供了方便且可擴充的方案。
範例
下列程式碼範例示範如何使用 BindingNavigator 控制項在資料間移動。 集合是包含在 DataView 中，而它是以 BindingSource 元件繫結至 TextBox 控制項。
.gif "注意事項") 注意事項 |
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在連接字串內儲存機密資訊 (例如密碼) 會影響應用程式的安全性。 使用 Windows 驗證 (也稱為整合式安全性) 是控制資料庫存取的更安全方式。 如需詳細資訊，請參閱保護連接資訊 (ADO.NET)。 |
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Data.SqlClient
Imports System.Windows.Forms
' This form demonstrates using a BindingNavigator to display
' rows from a database query sequentially.
Public Class Form1
Inherits Form
' This is the BindingNavigator that allows the user
' to navigate through the rows in a DataSet.
Private customersBindingNavigator As New BindingNavigator(True)
' This is the BindingSource that provides data for
' the Textbox control.
Private customersBindingSource As New BindingSource()
' This is the TextBox control that displays the CompanyName
' field from the the DataSet.
Private companyNameTextBox As New TextBox()
Public Sub New()
' Set up the BindingSource component.
Me.customersBindingNavigator.BindingSource = Me.customersBindingSource
Me.customersBindingNavigator.Dock = DockStyle.Top
Me.Controls.Add(Me.customersBindingNavigator)
' Set up the TextBox control for displaying company names.
Me.companyNameTextBox.Dock = DockStyle.Bottom
Me.Controls.Add(Me.companyNameTextBox)
' Set up the form.
Me.Size = New Size(800, 200)
AddHandler Me.Load, AddressOf Form1_Load
End Sub 'New
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
' Open a connection to the database.
' Replace the value of connectString with a valid
' connection string to a Northwind database accessible
' to your system.
Dim connectString As String = _
"Integrated Security=SSPI;Persist Security Info=False;" & _
"Initial Catalog=Northwind;Data Source=localhost"
Dim connection As New SqlConnection(connectString)
Try
Dim dataAdapter1 As New SqlDataAdapter( _
New SqlCommand("Select * From Customers", connection))
Dim ds As New DataSet("Northwind Customers")
ds.Tables.Add("Customers")
dataAdapter1.Fill(ds.Tables("Customers"))
' Assign the DataSet as the DataSource for the BindingSource.
Me.customersBindingSource.DataSource = ds.Tables("Customers")
' Bind the CompanyName field to the TextBox control.
Me.companyNameTextBox.DataBindings.Add(New Binding("Text", _
Me.customersBindingSource, "CompanyName", True))
Finally
connection.Dispose()
End Try
End Sub 'Form1_Load
<STAThread()> _
Public Shared Sub Main()
Application.EnableVisualStyles()
Application.Run(New Form1())
End Sub
End Class
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Data.SqlClient;
using System.Windows.Forms;
// This form demonstrates using a BindingNavigator to display
// rows from a database query sequentially.
public class Form1 : Form
{
// This is the BindingNavigator that allows the user
// to navigate through the rows in a DataSet.
BindingNavigator customersBindingNavigator = new BindingNavigator(true);
// This is the BindingSource that provides data for
// the Textbox control.
BindingSource customersBindingSource = new BindingSource();
// This is the TextBox control that displays the CompanyName
// field from the the DataSet.
TextBox companyNameTextBox = new TextBox();
public Form1()
{
// Set up the BindingSource component.
this.customersBindingNavigator.BindingSource = this.customersBindingSource;
this.customersBindingNavigator.Dock = DockStyle.Top;
this.Controls.Add(this.customersBindingNavigator);
// Set up the TextBox control for displaying company names.
this.companyNameTextBox.Dock = DockStyle.Bottom;
this.Controls.Add(this.companyNameTextBox);
// Set up the form.
this.Size = new Size(800, 200);
this.Load += new EventHandler(Form1_Load);
}
void Form1_Load(object sender, EventArgs e)
{
// Open a connection to the database.
// Replace the value of connectString with a valid
// connection string to a Northwind database accessible
// to your system.
string connectString =
"Integrated Security=SSPI;Persist Security Info=False;" +
"Initial Catalog=Northwind;Data Source=localhost";
using (SqlConnection connection = new SqlConnection(connectString))
{
SqlDataAdapter dataAdapter1 =
new SqlDataAdapter(new SqlCommand("Select * From Customers",connection));
DataSet ds = new DataSet("Northwind Customers");
ds.Tables.Add("Customers");
dataAdapter1.Fill(ds.Tables["Customers"]);
// Assign the DataSet as the DataSource for the BindingSource.
this.customersBindingSource.DataSource = ds.Tables["Customers"];
// Bind the CompanyName field to the TextBox control.
this.companyNameTextBox.DataBindings.Add(
new Binding("Text",
this.customersBindingSource,
"CompanyName",
true));
}
}
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
編譯程式碼
這個範例需要：
- System、System.Data、System.Drawing、System.Windows.Forms 和 System.Xml 組件的參考。
如需從 Visual Basic 或 Visual C# 的命令列建置這個範例的詳細資訊，請參閱從命令列建置 (Visual Basic) 或使用 csc.exe 建置命令列。 您也可以透過將程式碼貼入新的專案，在 Visual Studio 中建置此範例。 如需詳細資訊，請參閱HOW TO：使用 Visual Studio 編譯及執行完整的 Windows Form 程式碼範例 和 HOW TO：使用 Visual Studio 編譯及執行完整的 Windows Form 程式碼範例 和 HOW TO：使用 Visual Studio 編譯及執行完整的 Windows Form 程式碼範例 和 HOW TO：使用 Visual Studio 編譯及執行完整的 Windows Form 程式碼範例 和 如何：使用 Visual Studio 編譯及執行完整的 Windows Form 程式碼範例.
請參閱
工作
HOW TO：將 Windows Form 控制項繫結至型別