switch case 的问题

Question

  string s = textBoxID1.Text;
                switch (s)
                {
                    case s.ToString().CompareTo("A").Equals(0): valueButton3_Click(sender, e); break;
                    default:
                        MessageBox.Show("二维码有误");
                        break;
---------------------------------------------- case s.ToString().CompareTo("A").Equals(0): 这句改成 case s.Substring(0, 1).ToString().CompareTo("A")==0
也是有错,说无法将BOOL转化成string;我这里应该怎么改啊???

Answer 1

http://www.cnblogs.com/lmfeng/archive/2011/08/04/2127294.html建议你看下 witch case 的用法再自己做做看

Answer 2

  string s = textBoxID1.Text.Substring(0,1).ToString();                switch (s)
                {
                    case "A": valueButton3_Click(sender, e); break;
                    default:
                        MessageBox.Show("二维码有误");
                        break;
                }