C#实现简单switch循环

效果图：

3个label标签，2个button按钮，1个textbox标签。

显示季节特征Button按钮代码：

private void button1_Click(object sender, EventArgs e) { int month; try { month = Convert.ToInt32(textBox1.Text); switch (month) { case 1: case 2: case 3: label3.Text = "Spring"; label4.Text = "春季——农家闲季，旅游淡季"; break; case 4: case 5: case 6: label3.Text = "Summer"; label4.Text = "夏季——农家忙季，旅游旺季"; break; case 7: case 8: case 9: label3.Text = "Autumn"; label4.Text = "秋季——农家忙季，旅游旺季"; break; case 10: case 11: case 12: label3.Text = "Winter"; label4.Text = "冬季——农家闲季，旅游淡季"; break; default: MessageBox.Show("输入月份有误！！！", "提示信息"); break; } } catch (Exception ex) { MessageBox.Show(ex.Message,"错误信息"); } }
退出程序button按钮代码：

private void button2_Click(object sender, EventArgs e) { this.Close(); }