Search code examples
c#winformscomboboxbeforeupdate

Is there a BeforeUpdate for a C# ComboBox on a Winform

I come from the VBA world, and remember there was a BeforeUpdate call I could make on a combobox. Now I am in C# (and loving it) and I was wondering is there a BeforeUpdate call for a ComboBox on a Winform?

I can make an invisible textbox and store the info I need there and after the update, look at that box for what I need, but I was hoping there was a simplier solution.

Solution

  • You may consider SelectionChangeCommited.

    From MSDN:

    SelectionChangeCommitted is raised only when the user changes the combo box selection. Do not use SelectedIndexChanged or SelectedValueChanged to capture user changes, because those events are also raised when the selection changes programmatically.

    This won't work when you have set your combobox to allow the user to type in the textbox though. Also, it won't tell you what the 'last' selected item was. You will have to cache this information. However, you don't need to store your information in a textbox. You can use a string.