C# 显示或隐藏组合框SelectedIndexChanged事件中的其他字段

我有一个名为Number of Candidates的组合框，还有10个其他组合框，当从下拉菜单中选择候选数量时，应该显示或隐藏10个组合框

例如：我选择候选数量为3，然后ComboBox1 ComboBox2，ComboBox3应该可见。如果我选择2，那么只有ComboBox1和ComboBox2应该可见，其余的应该隐藏

我已经写了下面的代码，它可以很好地用于2到3，3到5这样的升级。。对于4比2这样的跳台，它不会起作用。你们能帮帮我吗

private void noOfCandidates_SelectedIndexChanged(object sender, EventArgs e)
        {
            int value = Convert.ToInt16(noOfCandidates.SelectedItem);
            if (value == 1)
            {
                candidateBox1.Visible = true; candidate2lbl.Visible = true;
            }
            else if (value == 2)
            {
                candidateBox1.Visible = true; candidate2lbl.Visible = true;
                candidateBox2.Visible = true; candidate3lbl.Visible = true;
            }
            else if (value == 3)
            {
                candidateBox1.Visible = true; candidate2lbl.Visible = true;
                candidateBox2.Visible = true; candidate3lbl.Visible = true;
                candidateBox3.Visible = true; candidate4lbl.Visible = true;
            }
            else if (value == 4)
            {
                candidateBox1.Visible = true; candidate2lbl.Visible = true;
                candidateBox2.Visible = true; candidate3lbl.Visible = true;
                candidateBox3.Visible = true; candidate4lbl.Visible = true;
                candidateBox4.Visible = true; candidate5lbl.Visible = true;
            }
}

使用以下代码：

private void noOfCandidates_SelectedIndexChanged(object sender, EventArgs e)
{
   int value = Convert.ToInt16(noOfCandidates.SelectedItem);
   if (value == 1)
   {
      candidateBox1.Visible = true; candidate2lbl.Visible = true;
      candidateBox2.Visible = false; candidate3lbl.Visible = false;
      candidateBox3.Visible = false; candidate4lbl.Visible = false;
      candidateBox4.Visible = false; candidate5lbl.Visible = false;
   }
   else if (value == 2)
   {
      candidateBox1.Visible = true; candidate2lbl.Visible = true;
      candidateBox2.Visible = true; candidate3lbl.Visible = true;
      candidateBox3.Visible = false; candidate4lbl.Visible = false;
      candidateBox4.Visible = false; candidate5lbl.Visible = false;
   }
   else if (value == 3)
   {
      candidateBox1.Visible = true; candidate2lbl.Visible = true;
      candidateBox2.Visible = true; candidate3lbl.Visible = true;
      candidateBox3.Visible = true; candidate4lbl.Visible = true;
      candidateBox4.Visible = false; candidate5lbl.Visible = false;
   }
   else if (value == 4)
   {
      candidateBox1.Visible = true; candidate2lbl.Visible = true;
      candidateBox2.Visible = true; candidate3lbl.Visible = true;
      candidateBox3.Visible = true; candidate4lbl.Visible = true;
      candidateBox4.Visible = true; candidate5lbl.Visible = true;
   }
}

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我希望它有用。

您可能需要添加代码来隐藏您不希望看到的控件。哇，谢谢。这么简单的想法。