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Pojawienie się kontrolki BindingNavigator w formularzach systemu Windows umożliwia deweloperom zapewnienie użytkownikom końcowym prostego interfejsu użytkownika nawigacji i manipulowania danymi w tworzonych przez nich formularzach.
Kontrolka BindingNavigator to kontrolka ToolStrip ze wstępnie skonfigurowanymi przyciskami na potrzeby nawigacji do pierwszego, ostatniego, następnego i poprzedniego rekordu w zestawie danych, a także przycisków do dodawania i usuwania rekordów. Dodawanie przycisków do kontrolki BindingNavigator jest łatwe, ponieważ jest to kontrolka ToolStrip. Aby zapoznać się z przykładami, zobacz Jak: Dodać przyciski Wczytaj, Zapisz i Anuluj do kontrolki Windows Forms BindingNavigator.
Dla każdego przycisku na kontrolce BindingNavigator istnieje odpowiedni element członkowski składnika BindingSource, który programowo zezwala na te same funkcje. Na przykład przycisk MoveFirstItem odpowiada metodzie MoveFirst składnika BindingSource, przycisk DeleteItem odpowiada metodzie RemoveCurrent itd. W związku z tym, aby umożliwić nawigowanie po rekordach danych za pomocą kontrolki BindingNavigator, wystarczy ustawić jej właściwość BindingSource na odpowiedni składnik BindingSource na formularzu.
Aby skonfigurować kontrolkę BindingNavigator
Dodaj składnik BindingSource o nazwie
bindingSource1i dwie kontrolki TextBox o nazwietextBox1itextBox2.Powiąż
bindingSource1z danymi, a kontrolki pola tekstowego dobindingSource1. W tym celu wklej następujący kod do formularza i wywołajLoadDataz konstruktora formularza lub metody obsługi zdarzeń Load.private void LoadData() { // The xml to bind to. string xml = @"<US><states>" + @"<state><name>Washington</name><capital>Olympia</capital></state>" + @"<state><name>Oregon</name><capital>Salem</capital></state>" + @"<state><name>California</name><capital>Sacramento</capital></state>" + @"<state><name>Nevada</name><capital>Carson City</capital></state>" + @"</states></US>"; // Convert the xml string to bytes and load into a memory stream. byte[] xmlBytes = Encoding.UTF8.GetBytes(xml); MemoryStream stream = new MemoryStream(xmlBytes, false); // Create a DataSet and load the xml into it. DataSet set = new DataSet(); set.ReadXml(stream); // Set the DataSource to the DataSet, and the DataMember // to state. bindingSource1.DataSource = set; bindingSource1.DataMember = "state"; textBox1.DataBindings.Add("Text", bindingSource1, "name"); textBox2.DataBindings.Add("Text", bindingSource1, "capital"); }Private Sub LoadData() ' The xml to bind to. Dim xml As String = "<US><states>" + "<state><name>Washington</name><capital>Olympia</capital></state>" + "<state><name>Oregon</name><capital>Salem</capital></state>" + "<state><name>California</name><capital>Sacramento</capital></state>" + "<state><name>Nevada</name><capital>Carson City</capital></state>" + "</states></US>" ' Convert the xml string to bytes and load into a memory stream. Dim xmlBytes As Byte() = Encoding.UTF8.GetBytes(xml) Dim stream As New MemoryStream(xmlBytes, False) ' Create a DataSet and load the xml into it. Dim [set] As New DataSet() [set].ReadXml(stream) ' Set the DataSource to the DataSet, and the DataMember ' to state. bindingSource1.DataSource = [set] bindingSource1.DataMember = "state" textBox1.DataBindings.Add("Text", bindingSource1, "name") textBox2.DataBindings.Add("Text", bindingSource1, "capital") End SubDodaj kontrolkę BindingNavigator o nazwie
bindingNavigator1do formularza.Ustaw właściwość BindingSource dla
bindingNavigator1na wartośćbindingSource1. Można to zrobić za pomocą projektanta lub kodu.bindingNavigator1.BindingSource = bindingSource1;bindingNavigator1.BindingSource = bindingSource1
Przykład
Poniższy przykład kodu jest kompletnym przykładem kroków wymienionych wcześniej.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.Xml;
using System.IO;
using System.Text;
namespace System.Windows.Forms.BindingSourceCurrent
{
class Form1 : Form
{
private IContainer components;
private BindingNavigator bindingNavigator1;
private ToolStripButton bindingNavigatorAddNewItem;
private ToolStripLabel bindingNavigatorCountItem;
private ToolStripButton bindingNavigatorDeleteItem;
private ToolStripButton bindingNavigatorMoveFirstItem;
private ToolStripButton bindingNavigatorMovePreviousItem;
private ToolStripSeparator bindingNavigatorSeparator;
private ToolStripTextBox bindingNavigatorPositionItem;
private ToolStripSeparator bindingNavigatorSeparator1;
private ToolStripButton bindingNavigatorMoveNextItem;
private ToolStripButton bindingNavigatorMoveLastItem;
private TextBox textBox1;
private TextBox textBox2;
private BindingSource bindingSource1;
private ToolStripSeparator bindingNavigatorSeparator2;
public Form1()
{
InitializeComponent();
LoadData();
bindingNavigator1.BindingSource = bindingSource1;
}
private void LoadData()
{
// The xml to bind to.
string xml = @"<US><states>"
+ @"<state><name>Washington</name><capital>Olympia</capital></state>"
+ @"<state><name>Oregon</name><capital>Salem</capital></state>"
+ @"<state><name>California</name><capital>Sacramento</capital></state>"
+ @"<state><name>Nevada</name><capital>Carson City</capital></state>"
+ @"</states></US>";
// Convert the xml string to bytes and load into a memory stream.
byte[] xmlBytes = Encoding.UTF8.GetBytes(xml);
MemoryStream stream = new MemoryStream(xmlBytes, false);
// Create a DataSet and load the xml into it.
DataSet set = new DataSet();
set.ReadXml(stream);
// Set the DataSource to the DataSet, and the DataMember
// to state.
bindingSource1.DataSource = set;
bindingSource1.DataMember = "state";
textBox1.DataBindings.Add("Text", bindingSource1, "name");
textBox2.DataBindings.Add("Text", bindingSource1, "capital");
}
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
System.ComponentModel.ComponentResourceManager resources =
new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.bindingNavigator1 = new System.Windows.Forms.BindingNavigator(this.components);
this.bindingNavigatorAddNewItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorCountItem = new System.Windows.Forms.ToolStripLabel();
this.bindingNavigatorDeleteItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorMoveFirstItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorMovePreviousItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorSeparator = new System.Windows.Forms.ToolStripSeparator();
this.bindingNavigatorPositionItem = new System.Windows.Forms.ToolStripTextBox();
this.bindingNavigatorSeparator1 = new System.Windows.Forms.ToolStripSeparator();
this.bindingNavigatorMoveNextItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorMoveLastItem = new System.Windows.Forms.ToolStripButton();
this.bindingNavigatorSeparator2 = new System.Windows.Forms.ToolStripSeparator();
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.bindingSource1 = new System.Windows.Forms.BindingSource(this.components);
((System.ComponentModel.ISupportInitialize)(this.bindingNavigator1)).BeginInit();
this.bindingNavigator1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.bindingSource1)).BeginInit();
this.SuspendLayout();
//
// bindingNavigator1
//
this.bindingNavigator1.AddNewItem = this.bindingNavigatorAddNewItem;
this.bindingNavigator1.CountItem = this.bindingNavigatorCountItem;
this.bindingNavigator1.CountItemFormat = "of {0}";
this.bindingNavigator1.DeleteItem = this.bindingNavigatorDeleteItem;
this.bindingNavigator1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.bindingNavigatorMoveFirstItem,
this.bindingNavigatorMovePreviousItem,
this.bindingNavigatorSeparator,
this.bindingNavigatorPositionItem,
this.bindingNavigatorCountItem,
this.bindingNavigatorSeparator1,
this.bindingNavigatorMoveNextItem,
this.bindingNavigatorMoveLastItem,
this.bindingNavigatorSeparator2,
this.bindingNavigatorAddNewItem,
this.bindingNavigatorDeleteItem});
this.bindingNavigator1.Location = new System.Drawing.Point(0, 0);
this.bindingNavigator1.MoveFirstItem = this.bindingNavigatorMoveFirstItem;
this.bindingNavigator1.MoveLastItem = this.bindingNavigatorMoveLastItem;
this.bindingNavigator1.MoveNextItem = this.bindingNavigatorMoveNextItem;
this.bindingNavigator1.MovePreviousItem = this.bindingNavigatorMovePreviousItem;
this.bindingNavigator1.Name = "bindingNavigator1";
this.bindingNavigator1.PositionItem = this.bindingNavigatorPositionItem;
this.bindingNavigator1.TabIndex = 2;
this.bindingNavigator1.Text = "bindingNavigator1";
//
// bindingNavigatorAddNewItem
//
this.bindingNavigatorAddNewItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorAddNewItem.Image")));
this.bindingNavigatorAddNewItem.Name = "bindingNavigatorAddNewItem";
this.bindingNavigatorAddNewItem.Text = "Add new";
//
// bindingNavigatorCountItem
//
this.bindingNavigatorCountItem.Name = "bindingNavigatorCountItem";
this.bindingNavigatorCountItem.Text = "of {0}";
this.bindingNavigatorCountItem.ToolTipText = "Total number of items";
//
// bindingNavigatorDeleteItem
//
this.bindingNavigatorDeleteItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorDeleteItem.Image")));
this.bindingNavigatorDeleteItem.Name = "bindingNavigatorDeleteItem";
this.bindingNavigatorDeleteItem.Text = "Delete";
//
// bindingNavigatorMoveFirstItem
//
this.bindingNavigatorMoveFirstItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorMoveFirstItem.Image")));
this.bindingNavigatorMoveFirstItem.Name = "bindingNavigatorMoveFirstItem";
this.bindingNavigatorMoveFirstItem.Text = "Move first";
//
// bindingNavigatorMovePreviousItem
//
this.bindingNavigatorMovePreviousItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorMovePreviousItem.Image")));
this.bindingNavigatorMovePreviousItem.Name = "bindingNavigatorMovePreviousItem";
this.bindingNavigatorMovePreviousItem.Text = "Move previous";
//
// bindingNavigatorSeparator
//
this.bindingNavigatorSeparator.Name = "bindingNavigatorSeparator";
//
// bindingNavigatorPositionItem
//
this.bindingNavigatorPositionItem.DisplayStyle =
System.Windows.Forms.ToolStripItemDisplayStyle.ImageAndText;
this.bindingNavigatorPositionItem.Name = "bindingNavigatorPositionItem";
this.bindingNavigatorPositionItem.Size = new System.Drawing.Size(50, 25);
this.bindingNavigatorPositionItem.Text = "0";
this.bindingNavigatorPositionItem.ToolTipText = "Current position";
//
// bindingNavigatorSeparator1
//
this.bindingNavigatorSeparator1.Name = "bindingNavigatorSeparator1";
// bindingNavigatorMoveNextItem
//
this.bindingNavigatorMoveNextItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorMoveNextItem.Image")));
this.bindingNavigatorMoveNextItem.Name = "bindingNavigatorMoveNextItem";
this.bindingNavigatorMoveNextItem.Text = "Move next";
//
// bindingNavigatorMoveLastItem
//
this.bindingNavigatorMoveLastItem.Image =
((System.Drawing.Image)(resources.GetObject("bindingNavigatorMoveLastItem.Image")));
this.bindingNavigatorMoveLastItem.Name = "bindingNavigatorMoveLastItem";
this.bindingNavigatorMoveLastItem.Text = "Move last";
//
// bindingNavigatorSeparator2
//
this.bindingNavigatorSeparator2.Name = "bindingNavigatorSeparator2";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(46, 64);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 3;
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(46, 104);
this.textBox2.Name = "textBox2";
this.textBox2.TabIndex = 4;
//
// Form1
//
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.bindingNavigator1);
this.Name = "Form1";
((System.ComponentModel.ISupportInitialize)(this.bindingNavigator1)).EndInit();
this.bindingNavigator1.ResumeLayout(false);
this.bindingNavigator1.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.bindingSource1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
}
}
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Xml
Imports System.IO
Imports System.Text
Class Form1
Inherits Form
Private components As IContainer
Private bindingNavigator1 As BindingNavigator
Private bindingNavigatorAddNewItem As ToolStripButton
Private bindingNavigatorCountItem As ToolStripLabel
Private bindingNavigatorDeleteItem As ToolStripButton
Private bindingNavigatorMoveFirstItem As ToolStripButton
Private bindingNavigatorMovePreviousItem As ToolStripButton
Private bindingNavigatorSeparator As ToolStripSeparator
Private bindingNavigatorPositionItem As ToolStripTextBox
Private bindingNavigatorSeparator1 As ToolStripSeparator
Private bindingNavigatorMoveNextItem As ToolStripButton
Private bindingNavigatorMoveLastItem As ToolStripButton
Private textBox1 As TextBox
Private textBox2 As TextBox
Private bindingSource1 As BindingSource
Private bindingNavigatorSeparator2 As ToolStripSeparator
Public Sub New()
InitializeComponent()
LoadData()
bindingNavigator1.BindingSource = bindingSource1
End Sub
Private Sub LoadData()
' The xml to bind to.
Dim xml As String = "<US><states>" + "<state><name>Washington</name><capital>Olympia</capital></state>" + "<state><name>Oregon</name><capital>Salem</capital></state>" + "<state><name>California</name><capital>Sacramento</capital></state>" + "<state><name>Nevada</name><capital>Carson City</capital></state>" + "</states></US>"
' Convert the xml string to bytes and load into a memory stream.
Dim xmlBytes As Byte() = Encoding.UTF8.GetBytes(xml)
Dim stream As New MemoryStream(xmlBytes, False)
' Create a DataSet and load the xml into it.
Dim [set] As New DataSet()
[set].ReadXml(stream)
' Set the DataSource to the DataSet, and the DataMember
' to state.
bindingSource1.DataSource = [set]
bindingSource1.DataMember = "state"
textBox1.DataBindings.Add("Text", bindingSource1, "name")
textBox2.DataBindings.Add("Text", bindingSource1, "capital")
End Sub
<STAThread()> _
Public Shared Sub Main()
Application.EnableVisualStyles()
Application.Run(New Form1())
End Sub
Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container()
Dim resources As New System.ComponentModel.ComponentResourceManager(GetType(Form1))
Me.bindingNavigator1 = New System.Windows.Forms.BindingNavigator(Me.components)
Me.bindingNavigatorAddNewItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorCountItem = New System.Windows.Forms.ToolStripLabel()
Me.bindingNavigatorDeleteItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorMoveFirstItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorMovePreviousItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorSeparator = New System.Windows.Forms.ToolStripSeparator()
Me.bindingNavigatorPositionItem = New System.Windows.Forms.ToolStripTextBox()
Me.bindingNavigatorSeparator1 = New System.Windows.Forms.ToolStripSeparator()
Me.bindingNavigatorMoveNextItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorMoveLastItem = New System.Windows.Forms.ToolStripButton()
Me.bindingNavigatorSeparator2 = New System.Windows.Forms.ToolStripSeparator()
Me.textBox1 = New System.Windows.Forms.TextBox()
Me.textBox2 = New System.Windows.Forms.TextBox()
Me.bindingSource1 = New System.Windows.Forms.BindingSource(Me.components)
CType(Me.bindingNavigator1, System.ComponentModel.ISupportInitialize).BeginInit()
Me.bindingNavigator1.SuspendLayout()
CType(Me.bindingSource1, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
' bindingNavigator1
'
Me.bindingNavigator1.AddNewItem = Me.bindingNavigatorAddNewItem
Me.bindingNavigator1.CountItem = Me.bindingNavigatorCountItem
Me.bindingNavigator1.CountItemFormat = "of {0}"
Me.bindingNavigator1.DeleteItem = Me.bindingNavigatorDeleteItem
Me.bindingNavigator1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.bindingNavigatorMoveFirstItem, Me.bindingNavigatorMovePreviousItem, Me.bindingNavigatorSeparator, Me.bindingNavigatorPositionItem, Me.bindingNavigatorCountItem, Me.bindingNavigatorSeparator1, Me.bindingNavigatorMoveNextItem, Me.bindingNavigatorMoveLastItem, Me.bindingNavigatorSeparator2, Me.bindingNavigatorAddNewItem, Me.bindingNavigatorDeleteItem})
Me.bindingNavigator1.Location = New System.Drawing.Point(0, 0)
Me.bindingNavigator1.MoveFirstItem = Me.bindingNavigatorMoveFirstItem
Me.bindingNavigator1.MoveLastItem = Me.bindingNavigatorMoveLastItem
Me.bindingNavigator1.MoveNextItem = Me.bindingNavigatorMoveNextItem
Me.bindingNavigator1.MovePreviousItem = Me.bindingNavigatorMovePreviousItem
Me.bindingNavigator1.Name = "bindingNavigator1"
Me.bindingNavigator1.PositionItem = Me.bindingNavigatorPositionItem
Me.bindingNavigator1.TabIndex = 2
Me.bindingNavigator1.Text = "bindingNavigator1"
'
' bindingNavigatorAddNewItem
'
Me.bindingNavigatorAddNewItem.Image = CType(resources.GetObject("bindingNavigatorAddNewItem.Image"), System.Drawing.Image)
Me.bindingNavigatorAddNewItem.Name = "bindingNavigatorAddNewItem"
Me.bindingNavigatorAddNewItem.Text = "Add new"
'
' bindingNavigatorCountItem
'
Me.bindingNavigatorCountItem.Name = "bindingNavigatorCountItem"
Me.bindingNavigatorCountItem.Text = "of {0}"
Me.bindingNavigatorCountItem.ToolTipText = "Total number of items"
'
' bindingNavigatorDeleteItem
'
Me.bindingNavigatorDeleteItem.Image = CType(resources.GetObject("bindingNavigatorDeleteItem.Image"), System.Drawing.Image)
Me.bindingNavigatorDeleteItem.Name = "bindingNavigatorDeleteItem"
Me.bindingNavigatorDeleteItem.Text = "Delete"
'
' bindingNavigatorMoveFirstItem
'
Me.bindingNavigatorMoveFirstItem.Image = CType(resources.GetObject("bindingNavigatorMoveFirstItem.Image"), System.Drawing.Image)
Me.bindingNavigatorMoveFirstItem.Name = "bindingNavigatorMoveFirstItem"
Me.bindingNavigatorMoveFirstItem.Text = "Move first"
'
' bindingNavigatorMovePreviousItem
'
Me.bindingNavigatorMovePreviousItem.Image = CType(resources.GetObject("bindingNavigatorMovePreviousItem.Image"), System.Drawing.Image)
Me.bindingNavigatorMovePreviousItem.Name = "bindingNavigatorMovePreviousItem"
Me.bindingNavigatorMovePreviousItem.Text = "Move previous"
'
' bindingNavigatorSeparator
'
Me.bindingNavigatorSeparator.Name = "bindingNavigatorSeparator"
'
' bindingNavigatorPositionItem
'
Me.bindingNavigatorPositionItem.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.ImageAndText
Me.bindingNavigatorPositionItem.Name = "bindingNavigatorPositionItem"
Me.bindingNavigatorPositionItem.Size = New System.Drawing.Size(50, 25)
Me.bindingNavigatorPositionItem.Text = "0"
Me.bindingNavigatorPositionItem.ToolTipText = "Current position"
'
' bindingNavigatorSeparator1
'
Me.bindingNavigatorSeparator1.Name = "bindingNavigatorSeparator1"
'
' bindingNavigatorMoveNextItem
'
Me.bindingNavigatorMoveNextItem.Image = CType(resources.GetObject("bindingNavigatorMoveNextItem.Image"), System.Drawing.Image)
Me.bindingNavigatorMoveNextItem.Name = "bindingNavigatorMoveNextItem"
Me.bindingNavigatorMoveNextItem.Text = "Move next"
'
' bindingNavigatorMoveLastItem
'
Me.bindingNavigatorMoveLastItem.Image = CType(resources.GetObject("bindingNavigatorMoveLastItem.Image"), System.Drawing.Image)
Me.bindingNavigatorMoveLastItem.Name = "bindingNavigatorMoveLastItem"
Me.bindingNavigatorMoveLastItem.Text = "Move last"
'
' bindingNavigatorSeparator2
'
Me.bindingNavigatorSeparator2.Name = "bindingNavigatorSeparator2"
'
' textBox1
'
Me.textBox1.Location = New System.Drawing.Point(46, 64)
Me.textBox1.Name = "textBox1"
Me.textBox1.TabIndex = 3
'
' textBox2
'
Me.textBox2.Location = New System.Drawing.Point(46, 104)
Me.textBox2.Name = "textBox2"
Me.textBox2.TabIndex = 4
'
' Form1
'
Me.ClientSize = New System.Drawing.Size(292, 266)
Me.Controls.Add(textBox2)
Me.Controls.Add(textBox1)
Me.Controls.Add(bindingNavigator1)
Me.Name = "Form1"
CType(Me.bindingNavigator1, System.ComponentModel.ISupportInitialize).EndInit()
Me.bindingNavigator1.ResumeLayout(False)
Me.bindingNavigator1.PerformLayout()
CType(Me.bindingSource1, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
End Class
Kompilowanie kodu
Ten przykład wymaga:
- Odwołania do zestawów System, System.Data, System.Drawing, System.Windows.Forms i System.Xml.
Zobacz także
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