Switch Case块未按预期执行

本文关键字：执行 Case Switch | 更新日期: 2023-09-27 18:24:50

在下面的代码片段中，我打算对每个定时器tick事件进行处理，它应该属于switch语句的"next"情况。然而，当我跑步时，它会先经历奇数情况，然后再经历偶数情况？

我犯了什么错误？

  private void timer1_Tick(object sender, EventArgs e)
  {
        switch (SCROLL_SCREEN_NO)
        {
            case 0: 
                    SCROLL_SCREEN_NO = 1;
                    break;
            case 1: label1.Text = "Param1";
                    label2.Text = "1234";
                    SCROLL_SCREEN_NO = 2;
                    break;
            case 2: label1.Text = "Param2";
                    label2.Text = "5678";
                    SCROLL_SCREEN_NO = 3;
                    break;
            case 3: label1.Text = "Param3";
                    label2.Text = "9012";
                    SCROLL_SCREEN_NO = 0;
                    break;
            case 4: label1.Text = "Param4";
                    label2.Text = "0";
                    SCROLL_SCREEN_NO = 5;
                    break;
            case 5: label1.Text = "Param5";
                    label2.Text = "02";
                    SCROLL_SCREEN_NO = 0;
                    break;
            default: { break; }
        }
    }

Switch Case块未按预期执行

您的代码真的会出错，请尝试以下操作：

private void timer1_Tick(object sender, EventArgs e)
{
   string[] L1Keys = new string[]{"Param1", "Param2","Param3","Param4","Param5"};
   string[] L2Keys = new string[]{"1234", "5678","9012","0","02"};
   label1.Text = L1Keys[SCROLL_SCREEN_NO];
   label2.Text = L2Keys[SCROLL_SCREEN_NO];
   if(SCROLL_SCREEN_NO >=0 && SCROLL_SCREEN_NO<=4)
       SCROLL_SCREEN_NO = (SCROLL_SCREEN_NO+1) % 5;
}

您的代码似乎还可以。您是否在此计时器刻度事件之外使用SCROLL_SCREEN_NO？如果是，请再次查看使用SCROLL_SCREEN_NO的代码。

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