Event Managers

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinGrid
Private Sub Button2_Click(ByVal sender As System.Object, _
  ByVal e As System.EventArgs) Handles Button2.Click
	If Me.ultraGrid1.ActiveRow Is Nothing Then Return
	Dim eventManager As GridEventManager
	' Get the grid's event manager.
	' The event manager is used to temporarily disable events
	' to prevent them from being raised. This can be very
	' convenient in a situation where one or more properties
	' are being set in code and the events they would normally
	' raise would cause unnecessary or counter-productive
	' code to be executed.
	'
	' Note: All events are enabled by default.
	eventManager = Me.ultraGrid1.EventManager
	' Disable the Before/AfterSelectChange events
	eventManager.SetEnabled(GridEventIds.BeforeSelectChange, False)
	eventManager.SetEnabled(GridEventIds.AfterSelectChange, False)
	' Toggle the selection state of the active row.
	' Note: This would normally cause the Before/AfterSelectChange
	' events to be raised. However, since the above code disabled
	' the events they won't be.
	Me.ultraGrid1.ActiveRow.Selected = Not Me.ultraGrid1.ActiveRow.Selected
	' Re-enable the Before/AfterSelectChange events
	eventManager.SetEnabled(GridEventIds.BeforeSelectChange, True)
	eventManager.SetEnabled(GridEventIds.AfterSelectChange, True)
	' The 'AllEventsEnabled' property lets you enable/disable
	' all events will a single line of code. If any event is
	' disabled the 'AllEventsEnabled' property returns false.
	If eventManager.AllEventsEnabled = False Then
		eventManager.AllEventsEnabled = True
	End If
	' The event manager also exposes an 'IsEnabled' method
	' to see if an event is enabled or disbled.
	If False = eventManager.IsEnabled(GridEventIds.BeforeSelectChange) Then
		eventManager.SetEnabled(GridEventIds.BeforeSelectChange, True)
	End If
	' The grid event manager also exposes overloaded
	' 'IsEnabled' and 'SetEnabled' methods that take an
	' event group so that, for example all 'Before' or all
	' 'After' events can be enabled/disabled. If any event
	' in the group is disabled the 'IsEnabled' method returns
	' false.
	If False = eventManager.IsEnabled(EventGroups.BeforeEvents) Then
		eventManager.SetEnabled(EventGroups.BeforeEvents, True)
	End If
	eventManager.SetEnabled(EventGroups.AfterEvents, True)
	' The 'InProgress' method will return true if the
	' specified event is currently being raised. This
	' is often helpful in methods that can be called
	' from various points in an application to determine
	' wahat is triggering the call.
	If eventManager.InProgress(GridEventIds.BeforeSelectChange) Then
		' ...
	End If
	' The UltraCombo and UltraDropDown controls also expose
	' event managers for their custom events. However,
	' since they have considerably fewer events they don't
	' expose overloaded 'IsEnabled' and 'SetEnabled' methods
	' to control groups of events.
	Dim comboManager As ComboEventManager
	comboManager = Me.ultraCombo1.EventManager
	comboManager.SetEnabled(ComboEventIds.BeforeDropDown, True)
	Dim dropDownManager As DropDownEventManager
	dropDownManager = Me.UltraDropDown1.EventManager
	dropDownManager.SetEnabled(DropDownEventIds.AfterCloseUp, True)
End Sub

using Infragistics.Win;
using Infragistics.Win.UltraWinGrid;
private void button2_Click(object sender, System.EventArgs e)
{
	if (this.ultraGrid1.ActiveRow == null)
		return;
	// Get the grid's event manager.
	// The event manager is used to temporarily disable events
	// to prevent them from being raised. This can be very
	// convenient in a situation where one or more properties
	// are being set in code and the events they would normally
	// raise would cause unnecessary or counter-productive
	// code to be executed.
	//
	// Note: All events are enabled by default.
	GridEventManager eventManager = this.ultraGrid1.EventManager;
	// Disable the Before/AfterSelectChange events
	eventManager.SetEnabled(GridEventIds.BeforeSelectChange, false);
	eventManager.SetEnabled(GridEventIds.AfterSelectChange, false);
	// Toggle the selection state of the active row.
	// Note: This would normally cause the Before/AfterSelectChange
	// events to be raised. However, since the above code disabled
	// the events they won't be.
	this.ultraGrid1.ActiveRow.Selected = !this.ultraGrid1.ActiveRow.Selected;
	// Re-enable the Before/AfterSelectChange events
	eventManager.SetEnabled(GridEventIds.BeforeSelectChange, true);
	eventManager.SetEnabled(GridEventIds.AfterSelectChange, true);
	// The 'AllEventsEnabled' property lets you enable/disable
	// all events will a single line of code. If any event is
	// disabled the 'AllEventsEnabled' property returns false.
	if (!eventManager.AllEventsEnabled)
		eventManager.AllEventsEnabled = true;
	// The event manager also exposes an 'IsEnabled' method
	// to see if an event is enabled or disabled.
	if (!eventManager.IsEnabled(GridEventIds.BeforeSelectChange))
		eventManager.SetEnabled(GridEventIds.BeforeSelectChange, true);
	// The grid event manager also exposes overloaded
	// 'IsEnabled' and 'SetEnabled' methods that take an
	// event group so that, for example all 'Before' or all
	// 'After' events can be enabled/disabled. If any event
	// in the group is disabled the 'IsEnabled' method returns
	// false.
	if (!eventManager.IsEnabled(EventGroups.BeforeEvents))
		eventManager.SetEnabled(EventGroups.BeforeEvents, true);
	eventManager.SetEnabled(EventGroups.AfterEvents, true);
	// The 'InProgress' method will return true if the
	// specified event is currently being raised. This
	// is often helpful in methods that can be called
	// from various points in an application to determine
	// what is triggering the call.
	if (eventManager.InProgress(GridEventIds.BeforeSelectChange))
	{
		// ...
	}
	// The UltraCombo and UltraDropDown controls also expose
	// event managers for their custom events. However,
	// since they have considerably fewer events they don't
	// expose overloaded 'IsEnabled' and 'SetEnabled' methods
	// to control groups of events.
	ComboEventManager comboManager = this.ultraCombo1.EventManager;
	comboManager.SetEnabled(ComboEventIds.BeforeDropDown, true);
	DropDownEventManager dropDownManager = this.ultraDropDown1.EventManager;
	dropDownManager.SetEnabled(DropDownEventIds.AfterCloseUp, true);
}