Private Sub cmb厂商名称_MouseWheel(sender As System.Object, e As System.Windows.Forms.HandledMouseEventArgs) Handles cmb厂商名称.MouseWheel
If Me.cmb厂商名称.DroppedDown Then
e.Handled = False
Else
e.Handled = True
End If
End Sub

Private Sub UltraComboEditor1_ControlAdded(sender As System.Object, e As System.Windows.Forms.ControlEventArgs) Handles cmb厂商名称.ControlAdded
AddHandler e.Control.MouseWheel, AddressOf Me.cmb厂商名称_MouseWheel
End Sub

Private Sub UltraComboEditor1_ControlRemoved(sender As System.Object, e As System.Windows.Forms.ControlEventArgs) Handles cmb厂商名称.ControlRemoved
RemoveHandler e.Control.MouseWheel, AddressOf Me.cmb厂商名称_MouseWheel
End Sub

1、自带案例是否正常。

2、检查应用包名称：com.zimo.taitai  只能是小写，不能有空格，

命名规则：

http://www.cnblogs.com/ycxyyzw/p/4103284.html

不然，第二个页面，事件不会加载！