How to get text from a Selected Index c#

How to get text from a Selected Index c#

Once the country has been located by the search show the integer and the
names of the two countries immediately before that country on the list. I
know how to get the index value of the selected country, but i don't know
how to get the text that it is highlighting.
e.g Australia has an index of 10. I can get the index value using:
int f = lbxcombo.SelectedIndex;
where f is the index value. But I can't get the text that the index
represents (Australia). Please help.
Thanks