Question

I’m having an issue where my SelectedValueChanged() event, on a ComboBox, is being triggered during the loading of my Windows Form application. Currently, I also have a Form_Load() event that is loading several ComboBoxes including this one, using OleDbDataAdapters/DataTables/Fill(), etc.

I’m assuming that because of my Form_Load() method, the SelectedValueChanged event is being triggered due to the data of the ComboBox being filled.

Why is this happening?

Answer 1

In the form Load event before loading the items to the comboBox, unsubscribe for the event. After binding data subscribe to the event again.

Form_Load(..)
{
     _comboBoxName.SelectedValueChanged -= _comboBoxName_SelectedValueChanged;

    // Load data to the combo box... 

    _comboBoxName.SelectedValueChanged += _comboBoxName_SelectedValueChanged;
}