使用ListBox类-选择项 获取所选项的索引：selectedIndex(start from 0) 达mC生T5bh2田.cAl。Ac。a 常用事件 Click、DoubleClick、SelectedIndexChenged、 SelectedValueChanged(在列表框中改变选中项时触发) foreach(int index in indices) ListBoxListBox.SelectedObjectCollection selectedltems listBox1.Selectedltems; foreach(string c in selectedltems) messagebox.show("selected Item:"c);7 使用ListBox类-选择项 ▪ 获取所选项的索引：selectedIndex(start from 0) ▪ 获取所选项的引用：selectedItem ▪ 多重选择列表框 ◼ selectedIndices返回一个索引的集合 ◼ selectedItems返回所选项的集合 ListBox.SelectedIndexCollection indices = listBox2.SelectedIndices; foreach(int index in indices) { MessageBox.Show("selected index:\r\n[" + index.ToString()+"]"+listBox2.SelectedItem ); } ListBoxListBox.SelectedObjectCollection selectedItems = listBox1.SelectedItems; foreach(string c in selectedItems) { messagebox.show(“selected Item:” + c); } SelectedIndexCollection类的实例 常用事件 SelectedObjectCollection类的实例 Click、DoubleClick、SelectedIndexChenged、 SelectedValueChanged(在列表框中改变选中项时触发)