I am having a little trouble with event handlers:

I would like to disable (remove) the combobox event handler shown below so that the event will not fire when the value of the combobox is changed programmatically. The event was originally added using AddHandler.

Code:
       
1   RemoveHandler ComboBox1.SelectedIndexChanged, AddressOf ComboBox1_SelectedIndexChanged
        
2   Me.ComboBox1.SelectedValue = ""
3   Me.ComboBox2.SelectedValue = ""
4   Me.ComboBox9.SelectedValue = ""
5   Me.SchoolFilterList.Text = ""

6   AddHandler ComboBox1.SelectedIndexChanged, AddressOf ComboBox1_SelectedIndexChanged
The event for ComboBox1.SelectedIndexChanged still fires when the selected valve for combobox1 is set to “” in line 6. I can not see any code that might be ADDING multiple eventhandlers.

Any thoughts on how to keep the combobox from firing during programatic changes are appricated in advance.