在代码中触发 OnSelectedIndexChanged 事件

Question

As well as this event firing from the drop down, I would also like to be able to fire it from my code. Is this possible and if so how?

Thanks

Stu

Answer 1

The best way to do this is to wrap the code from the event into a method, and call it from both places.

BUT if you did want to call the event directly (which I don't recommend), you can do it like this:

MyComboBox_SelectedIndexChanged(null, null);

(Unless you use either the sender or EventArgs within the method, then you will need to supply these too)

Answer 2

If you want to fire the SelectedIndexChanged event from code you could either call the event handler like CmbBox_SelectedIndexChanged(null, null); or do

   if(CmbBox.SelectedIndex <> index)//let index is a int variable
      CmbBox.SelectedIndex = index;       
   else
   {
      CmbBox.SelectedIndex = -1;
      CmbBox.SelectedIndex = index;
   }