BindingCompleteEventArgs Class
.NET Framework 2.0
Note: This class is new in the .NET Framework version 2.0.
Provides data for the BindingComplete event.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)
Assembly: System.Windows.Forms (in system.windows.forms.dll)
The following code example demonstrates handling the BindingComplete event. To run this code, paste it into an empty code file.
Imports System Imports System.Drawing Imports System.Windows.Forms Class Form1 Inherits Form Private BindingSource1 As New BindingSource() Private textBox1 As New TextBox() Private textBox2 As New TextBox() Private textBox3 As New TextBox() Public Sub New() 'Set up the textbox controls. Me.textBox1.Location = New System.Drawing.Point(82, 13) Me.textBox1.TabIndex = 1 Me.textBox2.Location = New System.Drawing.Point(81, 47) Me.textBox2.TabIndex = 2 Me.textBox3.Location = New System.Drawing.Point(81, 83) Me.textBox3.TabIndex = 3 ' Add the textbox controls to the form Me.Controls.Add(Me.textBox2) Me.Controls.Add(Me.textBox1) Me.Controls.Add(Me.textBox3) End Sub Private WithEvents partNameBinding As Binding Private WithEvents partNumberBinding As Binding Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) _ Handles Me.Load ' Set the DataSource of BindingSource1 to the Part type. BindingSource1.DataSource = GetType(Part) ' Bind the textboxes to the properties of the Part type, ' enabling formatting. partNameBinding = textBox1.DataBindings.Add("Text", BindingSource1, _ "PartName", True) partNumberBinding = textBox2.DataBindings.Add("Text", BindingSource1, _ "PartNumber", True) 'Bind the textbox to the PartPrice value with currency formatting. textBox3.DataBindings.Add("Text", BindingSource1, "PartPrice", _ True, DataSourceUpdateMode.OnPropertyChanged, 0, "C") ' Add a new part to BindingSource1. BindingSource1.Add(New Part("Widget", 1234, 12.45)) End Sub ' Handle the BindingComplete event to catch errors and exceptions ' in binding process. Sub partNumberBinding_BindingComplete(ByVal sender As Object, _ ByVal e As BindingCompleteEventArgs) _ Handles partNumberBinding.BindingComplete If Not e.BindingCompleteState = BindingCompleteState.Success Then MessageBox.Show("partNumberBinding: " + e.ErrorText) End If End Sub ' Handle the BindingComplete event to catch errors and exceptions ' in binding process. Sub partNameBinding_BindingComplete(ByVal sender As Object, _ ByVal e As BindingCompleteEventArgs) _ Handles partNameBinding.BindingComplete If Not e.BindingCompleteState = BindingCompleteState.Success Then MessageBox.Show("partNameBinding: " + e.ErrorText) End If End Sub <STAThread()> _ Shared Sub Main() Application.EnableVisualStyles() Application.Run(New Form1()) End Sub End Class ' Represents a business object that throws exceptions when invalid ' values are entered for some of its properties. Public Class Part Private name As String Private number As Integer Private price As Double Public Sub New(ByVal name As String, ByVal number As Integer, _ ByVal price As Double) PartName = name PartNumber = number PartPrice = price End Sub Public Property PartName() As String Get Return name End Get Set(ByVal value As String) If Value.Length <= 0 Then Throw New Exception("Each part must have a name.") Else name = Value End If End Set End Property Public Property PartPrice() As Double Get Return price End Get Set(ByVal value As Double) price = Value End Set End Property Public Property PartNumber() As Integer Get Return number End Get Set(ByVal value As Integer) If Value < 100 Then Throw New Exception("Invalid part number." _ & " Part numbers must be greater than 100.") Else number = Value End If End Set End Property End Class
System.Object
System.EventArgs
System.ComponentModel.CancelEventArgs
System.Windows.Forms.BindingCompleteEventArgs
System.EventArgs
System.ComponentModel.CancelEventArgs
System.Windows.Forms.BindingCompleteEventArgs
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
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