c# - 用于标记输出 C# 的下拉列表

Question

我想用按钮显示从 DropDownList 输出的不同标签

select Item on DropDownList and click button to show output in label

谁能帮我解决这个问题？

Answer 1

protected void Button1_Click(object sender, EventArgs e)
{
       Label1.Text = DropDownList1.SelectedValue;
}

Answer 2

把这个写在button click event

protected void Button1_Click(object sender, EventArgs e) { 
    label.text = ComboBox.SelectedText;
}

Answer 3

protected void Button1_Click(object sender, EventArgs e)
{
    lable1.Text=DropDownList1.SelectedValue.ToString();
}

或者你可以

   protected void Button1_Click(object sender, EventArgs e)
   {
       String input=DropDownList1.SelectedIndex >= 0 ? DropDownList1.SelectedItem.ToString() : "";
       lable1.Text=input;
   }