RadioButtonList1

Question

通过FindControl(单选按钮ID),找到控件后，判断checked属性

Answer 1

this.RadioButton1.Checked = true  选中

Answer 2

        for (int i = 0; i < RadioButtonList1.Items.Count; i++)
            if (RadioButtonList1.Items[i].Selected)
                Response.Write("你选中了第" + (i+1).ToString() + "项");

Answer 3

用for循环，代码如下：for (int i = 0; i < RadioButtonList1.Items.Count; i++) 
{
   if (RadioButtonList1.Items[i].Selected) 
   {
      Response.Write("你选中了第" + (i+1).ToString() + "项");
   }
}

Answer 4

 if (RadioButtonList1.SelectedIndex != -1)
        {
            Response.Write(RadioButtonList1.SelectedItem.Text);
        }
        else
        {
            Response.Write("请选择");
        }

Answer 5

 if (RadioButtonList1.SelectedIndex != -1)
        {
            Response.Write(RadioButtonList1.SelectedItem.Text);
        }
        else
        {
            Response.Write("请选择");
        }