Question

lets say i got combobox populated with items (items are some numbers for this particular example), and i want to tell C# something like this: IF there is some item selected in combobox, get that item and multiply it by 2. Is there any way that i can do this?

Answer 1

Assuming it was populated by a list of ints. e.g

for(int index = 0; index < 10; index++)
{
  myCombobox.Add(index);
}

if (myCombobox.SelectedItem != null)
{
  int value = ((int)myCombobox.SelectedItem) * 2;
}

Winforms of course

If they are strings then it would be something ike

if (myCombobox.SelectedItem != null)
{
  int value = int.Parse(myCombobox.SelectedItem.ToString()) * 2;
}