'宣言 Protected Overridable Sub OnBeforeDropDown( _ ByVal e As CancelEventArgs _ )
protected virtual void OnBeforeDropDown( CancelEventArgs e )
Imports Infragistics.Shared Imports Infragistics.Win Imports Infragistics.Win.UltraWinGrid Private Sub UltraCombo1_BeforeDropDown(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles ultraCombo1.BeforeDropDown Dim allowDropDown As Boolean = True If Not allowDropDown Then ' UltraCombo を展開しないように、Cancel を True に設定します e.Cancel = True End If End Sub
using Infragistics.Shared; using Infragistics.Win; using Infragistics.Win.UltraWinGrid; using System.Diagnostics; private void ultraCombo1_BeforeDropDown(object sender, System.ComponentModel.CancelEventArgs e) { bool allowDropDown = true; if ( !allowDropDown ) { // UltraCombo を展開しないように、Cancel を True に設定します e.Cancel = true; } }