Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
[Message Deleted]
Try the OnValueChanged event. Check if all four got a value, and if true, write the contents to the textbox :)
OnValueChanged
I are troll :)
The OnValueChanged should fire for each combobox, but you'll only need one event-handler. Once you written the code for ComboBox1, you can reuse it by hooking up the event from ComboBox2, ComboBox3 and ComboBox4.
