'宣言 Public Class BeforeToolbarListDropdownEventArgs Inherits System.ComponentModel.CancelEventArgs
public class BeforeToolbarListDropdownEventArgs : System.ComponentModel.CancelEventArgs
Imports System.Diagnostics Imports Infragistics.Win Imports Infragistics.Win.UltraWinToolbars Private Sub UltraToolbarsManager1_BeforeToolbarListDropdown(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinToolbars.BeforeToolbarListDropdownEventArgs) Handles UltraToolbarsManager1.BeforeToolbarListDropdown Dim dr As DialogResult = MessageBox.Show(Me, "The toolbar list is about to dropdown. Do you want to cancel the dropdown?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo) If dr = DialogResult.Yes Then e.Cancel = True Else dr = MessageBox.Show(Me, "The toolbar list is about to dropdown. Do you want to show the Customize option in the list?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo) e.ShowCustomizeMenuItem = (dr = DialogResult.Yes) dr = MessageBox.Show(Me, "The toolbar list is about to dropdown. Do you want to show the Lock Toolbars option in the list?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo) e.ShowLockToolbarsMenuItem = (dr = DialogResult.Yes) End If End Sub
using System.Diagnostics; using Infragistics.Win; using Infragistics.Win.UltraWinToolbars; private void ultraToolbarsManager1_BeforeToolbarListDropdown(object sender, Infragistics.Win.UltraWinToolbars.BeforeToolbarListDropdownEventArgs e) { DialogResult dr = MessageBox.Show(this, "The toolbar list is about to dropdown. Do you want to cancel the dropdown?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo); if (dr == DialogResult.Yes) e.Cancel = true; else { dr = MessageBox.Show(this, "The toolbar list is about to dropdown. Do you want to show the Customize option in the list?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo); e.ShowCustomizeMenuItem = (dr == DialogResult.Yes); dr = MessageBox.Show(this, "The toolbar list is about to dropdown. Do you want to show the Lock Toolbars option in the list?", "Cancelable Toolbar Event", MessageBoxButtons.YesNo); e.ShowLockToolbarsMenuItem = (dr == DialogResult.Yes); } }