BindingNotificationsSuspended プロパティ

IBindingList関連の通知が一時停止しているかどうかを示します。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property BindingNotificationsSuspended As Boolean

C#

public bool BindingNotificationsSuspended {get;}

使用例

Visual Basic

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinDataSource
Imports Infragistics.Win.UltraWinGrid


    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click
        ' SuspendBindingNotifications and ResumeBindingNotifications are used when
        ' performing a large number of updates to the data. What it does is that it
        ' prevents the UltraDataSource from firing ListChanged notifications on the
        ' IBindingList implementation so any bound controls do not process the 
        ' individual changes. When ResumeBindingNotifications is called, 
        ' UltraDataSource will fire ListChanged with Reset as the type specifying
        ' to the bound controls that they should reget the data for all rows. This
        ' can be more efficient than firing notifications for individual changes
        ' when there are lot of changes being made.
        '
        Try
            ' Suspend IBindingList ListChanged notifications.
            Me.UltraDataSource1.SuspendBindingNotifications()

            ' Value of BindingNotificationsSuspended property should be true after
            ' calling SuspendBindingNotifications method.
            Debug.WriteLine("Binding Notifications Suspended: " & Me.UltraDataSource1.BindingNotificationsSuspended)

            Dim row As UltraDataRow
            Dim column As UltraDataColumn
            For Each row In Me.UltraDataSource1.Rows
                For Each column In row.Band.Columns
                    row(column) = DBNull.Value
                Next
            Next
        Finally
            ' Resume ListChanged notifications.
            Me.UltraDataSource1.ResumeBindingNotifications()
        End Try
    End Sub

C#

using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinDataSource;
using Infragistics.Win.UltraWinGrid;
using System.Diagnostics;
		private void button1_Click(object sender, System.EventArgs e)
		{
			// SuspendBindingNotifications and ResumeBindingNotifications are used when
			// performing a large number of updates to the data. What it does is that it
			// prevents the UltraDataSource from firing ListChanged notifications on the
			// IBindingList implementation so any bound controls do not process the 
			// individual changes. When ResumeBindingNotifications is called, 
			// UltraDataSource will fire ListChanged with Reset as the type specifying
			// to the bound controls that they should reget the data for all rows. This
			// can be more efficient than firing notifications for individual changes
			// when there are lot of changes being made.
			//
			try
			{
				// Suspend IBindingList ListChanged notifications.
				this.ultraDataSource1.SuspendBindingNotifications( );

				// Value of BindingNotificationsSuspended property should be true after
				// calling SuspendBindingNotifications method.
				Debug.WriteLine( "Binding Notifications Suspended: " + this.ultraDataSource1.BindingNotificationsSuspended );

				foreach ( UltraDataRow row in this.ultraDataSource1.Rows )
				{
					foreach ( UltraDataColumn column in row.Band.Columns )
					{
						row[ column ] = DBNull.Value;
					}
				}
			}
			finally
			{
				// Resume ListChanged notifications.
				this.ultraDataSource1.ResumeBindingNotifications( );				
			}
		}