問：
如何獲取所有RedioButton并彈出當前被選中是RedioButton的值

答：
foreach (var c in Page.Form.Controls)
{
     if (c is RadioButton)
     {
         RadioButton btn = c as RadioButton;
         if (btn.Checked)
         {
              Response.Write(btn.Text);
         }
      }
 }