Input string not in correct format (Radiobuttonlist) asp.net

Question

I'm trying to retrieve the text from a radiobutton to use in my sql query. I typed in this:

 int cardtype = int.Parse(rbcard.SelectedItem.Text);

and an error occurs

 Input string not in correct format

What seems to be the problem?

Answer 1

Lets say radio button list look like :

 <asp:RadioButtonList ID="rdID" runat="server">

<asp:ListItem Text ="Item1" Value="1" />
<asp:ListItem Text ="Item2" Value="2" />
<asp:ListItem Text ="Item3" Value="3" />
<asp:ListItem Text ="Item4" Value="4" />

</asp:RadioButtonList>

then to get selected value do:

string selectedValue = rdID.SelectedValue;
        Response.Write(selectedValue);

Then after getting the value as string, then you can parse it as int like:

int x = Int32.Parse(selectedValue );

Hopefully this can help you