访问列表框的选定索引

Question

I'm attempting to access a list called people and I'm matching up the index of the listitem selected to the index of my list so that I can print the surname of the person to a textbox. I have this code:

surnameTxtBox.Text = people[listBoxNames.SelectedItems[0].Index].Surname;

listBoxNames is the name of my ListBox but for some reason, visual studio tells me that there's no definition called index?

Answer 1

您需要SelectedIndex来获取SelectedItem索引：

surnameTxtBox.Text = people[listBoxNames.SelectedIndex].Surname;