是否可以从asp.net中的radioButton列表中禁用一个listItem

Question

I want to disable one listItem from RadioButtonList depend on condition like if querystring contain true then it will display both the ListItem or else it disabled 2nd listItem ie(External). So user can't access 2nd list item

I have url like

abc.com/Account.aspx?type=true

abc.com/Account.aspx?type=false

Code On page Account.aspx

  <asp:RadioButtonList ID="rdodomiantype" runat="server" RepeatDirection="Horizontal" onclick="setTextbox()">
            <asp:ListItem Selected="True" Value="0" >Default</asp:ListItem>
            <asp:ListItem Value="1" >External</asp:ListItem>
    </asp:RadioButtonList>

Answer 1

I didn't want to remove the item from a list, I wanted to disable it like the original poster asked. As such, here's the code I was able to use (EDIT - converted to C# and checking for querystring param based on original post:

if (!string.IsNullOrEmpty(Request.QueryString["type"]) && Request.QueryString["type"].ToUpper() == "TRUE")
            {
                foreach (ListItem item in rdoList.Items)
                {
                    if (item.Text == "External")
                    {
                        item.Enabled = false;
                        item.Attributes.Add("style", "color:#999;");
                        break;
                    }
                }
            }

Answer 2

Here how i solved with the help of HariHaran

 protected void Page_Load(object sender, EventArgs e)
 {
   string planType=Request.QueryString["type"];
   if (planType == "False")
    {
      rdodomiantype.Items.Remove(rdodomiantype.Items.FindByValue("1"));
    }
 }

Answer 3

Is it necessary to disable one list item? My suggestion is according to the query string value you can bind the dropdown. ie if the query string value is true then you van bind the dropdown with both list item values;

or if the query string value is false you can bind the dropdown with first list item only.