到达方法结束后如何引发事件？

Question

How to raise combobox_SelectedIndexChanged(object sender, EventArgs e) programmatically?

Lets say i have method called ClearFields(). I want to call the event before i hit the end of Clearfields() method.

Answer 1

Just like calling any other method:

Public Sub ClearFields()
    ...
    ...
    combobox_SelectedIndexChanged(Nothing, Nothing)
End Sub

It's not actually 'raising the event'... When an Event is raised, all it does is call the associated method. combobox_SelectedIndexChanged is just a method attached to an event trigger.

If you need to pass a specific comboBox into the method, replace the first Nothing with the combo box you need to pass.

Answer 2

For your specific case, I think you may be able to call the OnSelectedIndexChanged method at the end of your own method. Although it seems like clearing the contents of a combo box might raise the event anyway.

Answer 3

您可以通过（以编程方式）选择ListView控件中的另一个项目来引发SelectedIndexChanged事件。

Answer 4

Just:

combobox_SelectedIndexChanged(null, null);

At the point in your code where you want to invoke the method.