c# listbox可顯示多個子項的列表控制元件(可單多選子項)

 //設定listbox可以選擇多個子項
            listBox1.MultiColumn = true;
            listBox1.SelectionMode = SelectionMode.MultiSimple;
        }

 

 

 //listbox是一個列表，使用者可選擇一或多個子項
        private void button1_Click(object sender, EventArgs e)
        {
            //新增子項到listbox
            listBox1.Items.Add("新增到listbox1的子項1");

           
            //刪除子項從listbox

        }
        //刪除子項從listbox
        private void button2_Click(object sender, EventArgs e)
        {
            if (listBox1.Items.Count==0)
            {
                MessageBox.Show("listbox無子項，不能刪除");
            }
            else
            {
                listBox1.Items.Remove(listBox1.SelectedItem);
                MessageBox.Show("listbox刪除子項成功");
            }

        }