Procedimiento para explorar datos con el control BindingNavigator de formularios Windows Forms
La incorporación del control BindingNavigator de Windows Forms permite a los desarrolladores proporcionar a los usuarios finales una sencilla interfaz de usuario de navegación y manipulación de datos en los formularios que creen.
El control BindingNavigator es un control ToolStrip con botones preconfigurados para navegar al registro primero, último, anterior y siguiente en un conjunto de datos, así como botones para agregar y eliminar registros. Agregar botones al control BindingNavigator es fácil porque es un control ToolStrip. Para obtener ejemplos, vea Procedimiento para agregar los botones Cargar, Guardar y Cancelar al control BindingNavigator de Windows Forms.
Por cada botón del control BindingNavigator hay un miembro correspondiente del componente BindingSource que permite la misma funcionalidad mediante programación. Por ejemplo, el botón MoveFirstItem corresponde al método MoveFirst del componente BindingSource, el botón DeleteItem corresponde al método RemoveCurrent, y así sucesivamente. Como resultado, habilitar el control BindingNavigator para navegar por los registros de datos es tan sencillo como establecer la propiedad BindingSource en el componente BindingSource correspondiente en el formulario.
Para configurar el control BindingNavigator
Agregue un componente BindingSource llamado
bindingSource1y dos controles TextBox llamadostextBox1ytextBox2.Enlace
bindingSource1a los datos y los controles de cuadro de texto abindingSource1. Para ello, pegue el siguiente código en el formulario y llame aLoadDatadesde el constructor del formulario o al método de control de eventos 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 SubAgregue un control BindingNavigator llamado
bindingNavigator1al formulario.Establezca la propiedad BindingSource de
bindingNavigator1enbindingSource1. Puede hacerlo con el diseñador o en el código.bindingNavigator1.BindingSource = bindingSource1;bindingNavigator1.BindingSource = bindingSource1
Ejemplo
El ejemplo de código siguiente es el ejemplo completo de los pasos enumerados anteriormente.
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
Compilar el código
Para este ejemplo se necesita:
- Referencias a los ensamblados System, System.Data, System.Drawing, System.Windows.Forms y System.Xml.
Consulte también
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