我表单上的所有按钮似乎都在触发“某些东西”

我有一个windows窗体，其中所有控件都是动态创建的。

然而，在点击事件之前，所有的按钮似乎都在触发"某事"，而"某事"正在导致我的组合框的选定交换触发。我已经彻底检查了声明的事件处理程序，并确保没有一个按钮将SIC路径作为它们的事件。

我注意到用鼠标点击按钮的正常行为是，当按钮被点击但按住并在按钮外面的区域释放时，按钮不会被触发。

有趣的是，在我的例子中，点击本身甚至在按下之前就触发了"某事"。

谁能告诉我的按钮是怎么回事?

以下是我似乎不太理解的InteliTrace事件:

Calls for thread <No Name> (6976)
[System.Threading.ThreadHelper.ThreadStart()]
SESAdminForm.My.MyApplication.Main(String() Args = {String(0)})
[Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(string[]      commandLine = {unknown})]
System.Windows.Forms.Application.Run(System.Windows.Forms.ApplicationContext context = {unknown})
ThreadContext.RunMessageLoop(int reason = {unknown}, System.Windows.Forms.ApplicationContext context = {unknown})
ThreadContext.RunMessageLoopInner(int reason = {unknown}, System.Windows.Forms.ApplicationContext context = {unknown})
ThreadContext.RunMessageLoopInner(int reason = {unknown}, System.Windows.Forms.ApplicationContext context = {unknown})
System.Windows.Forms.NativeWindow.DebuggableCallback(System.IntPtr hWnd = {unknown}, int msg = {unknown}, System.IntPtr wparam = {unknown}, System.IntPtr lparam = {unknown})
ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m = {unknown})
ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Button.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.ButtonBase.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Control.WmMouseDown(ref System.Windows.Forms.Message m = {unknown}, System.Windows.Forms.MouseButtons button = {unknown}, int clicks = {unknown})
System.Windows.Forms.Control.FocusInternal()
System.Windows.Forms.NativeWindow.DebuggableCallback(System.IntPtr hWnd = {unknown}, int msg = {unknown}, System.IntPtr wparam = {unknown}, System.IntPtr lparam = {unknown})
ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m = {unknown})
ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Button.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.ButtonBase.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.Control.WmSetFocus(ref System.Windows.Forms.Message m = {unknown})
System.Windows.Forms.ContainerControl.ActivateControlInternal(System.Windows.Forms.Control control = {unknown})
System.Windows.Forms.ContainerControl.ActivateControlInternal(System.Windows.Forms.Control control = {unknown}, bool originator = {unknown})
System.Windows.Forms.ContainerControl.AssignActiveControlInternal(System.Windows.Forms.Control value = {unknown})
System.Windows.Forms.ContainerControl.UpdateFocusedControl()
System.Windows.Forms.ContainerControl.EnterValidation(System.Windows.Forms.Control enterControl = {unknown})
System.Windows.Forms.ContainerControl.ValidateThroughAncestor(System.Windows.Forms.Control ancestorControl = {unknown}, bool preventFocusChangeOnError = {unknown})
System.Windows.Forms.Control.PerformControlValidation(bool bulkValidation = {unknown})
System.Windows.Forms.Control.NotifyValidating()
System.Windows.Forms.ComboBox.OnValidating(System.ComponentModel.CancelEventArgs e = {unknown})
System.Windows.Forms.ComboBox.NotifyAutoComplete()
System.Windows.Forms.ComboBox.NotifyAutoComplete(bool setSelectedIndex = {unknown})
Set System.Windows.Forms.ComboBox.SelectedIndex(int value = {unknown})
System.Windows.Forms.ComboBox.OnSelectedIndexChanged(System.EventArgs e = {unknown})
SESAdminForm.DataEntry.cBox_SelectionChangeCommittedUseItem2(Object sender = {System.Windows.Forms.ComboBox}, System.EventArgs e = {System.EventArgs})
SESAdminForm.DataEntry.DisplayText()

->有两个按钮相关的消息，但其中一个似乎发生在mousedown事件之前。

感谢您的宝贵时间。