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Selectedindex

In HTML DOM, the selectedIndex property sets or returns the index of the selected option in a dropdown list

Selecteditem

Selecteditem is a property used to identify the currently selected item in a collection



Others

Example

When the user selects something the selectedindex is set directly invalidating it and changing it which causes the selecteditem to become invalid;however the selecteditem is not explicitly changed until it is recomputed

from question  

JavaFX TableView not triggering selection callbacks

After debugging when the field is added back to the list of fields it still retains the previous selecteditem value - and then the combobox s selectedindex is immediately set to -1;preventing this in the setter for formfield.selectedoperator and by trying selecteditem selectedindex doesn t help

from question  

Default SelectedItem for a WPF ComboBox inside a DataTemplate used in an ItemsControl not working

I ve found that setting the selecteditem is more reliable than setting the selectedindex

from question  

Setting ComboBox.DroppedDown = false resets selected item

The symptoms of the bug are that selectionchanged doesn t fire selectedindex selecteditem aren t reliable and that back navigation into a page with panorama resets the panorama selected item;for example the following code sample will never fire the messagebox and selectedindex selecteditem won t indicate the correct expected values

from question  

Windows Phone 8 Panorama SelectionChanged & Databinding

Things like selectedindex are specific to the way the data is shown in the ui if you change the sort order of a datagrid then the selectedindex can change even though the selecteditem is still the same;in this particular case the selecteditem can be bound to the viewmodel but the selectedindex shouldn t

from question  

Why to avoid the codebehind in WPF MVVM pattern?

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