Raising an event invokes the event handler through a delegate.
The OnAfterCloseUp method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors: When overriding OnAfterCloseUp in a derived class, be sure to call the base class's OnAfterCloseUp method so that registered delegates receive the event.
Private Sub UltraCalendarCombo1_AfterCloseUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ultraCalendarCombo1.AfterCloseUp Dim newValue As String If (Me.ultraCalendarCombo1.Value Is Nothing) Then newValue = "Nothing" Else newValue = Me.ultraCalendarCombo1.Value.ToString() End If System.Diagnostics.Debug.WriteLine("AfterCloseUp: Value = " + newValue) End Sub
private void ultraCalendarCombo1_AfterCloseUp(object sender, System.EventArgs e) { string newValue = string.Empty; if ( this.ultraCalendarCombo1.Value == null ) newValue = "null"; else newValue = this.ultraCalendarCombo1.Value.ToString(); System.Diagnostics.Debug.WriteLine("AfterCloseUp: Value = " + newValue); }
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2