バージョン

BeforeToolDropdownEventArgs クラス

UltraToolbarsManager.BeforeToolbarListDropdown イベントに使用されるイベントパラメーター。
シンタックス
'宣言
 
Public Class BeforeToolDropdownEventArgs 
   Inherits CancelableToolEventArgs
public class BeforeToolDropdownEventArgs : CancelableToolEventArgs 
使用例
Imports System.Diagnostics
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinToolbars

	Private Sub UltraToolbarsManager1_BeforeToolDropdown(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinToolbars.BeforeToolDropdownEventArgs) Handles UltraToolbarsManager1.BeforeToolDropdown

		Dim dr As DialogResult = MessageBox.Show(Me, "The tool with key '" + e.Tool.Key + "' is about to be dropped down. Do you want to cancel the dropdown??", "Cancelable Toolbar Event", MessageBoxButtons.YesNo)

		If dr = DialogResult.Yes Then
			e.Cancel = True
		End If

	End Sub
using System.Diagnostics;
using Infragistics.Win;
using Infragistics.Win.UltraWinToolbars;

		private void ultraToolbarsManager1_BeforeToolDropdown(object sender, Infragistics.Win.UltraWinToolbars.BeforeToolDropdownEventArgs e)
		{

			DialogResult dr =  MessageBox.Show(this, "The tool with key '" + e.Tool.Key + "' is about to be dropped down. Do you want to cancel the dropdown??", "Cancelable Toolbar Event", MessageBoxButtons.YesNo);

			if (dr == DialogResult.Yes)
				e.Cancel = true;

		}
参照