Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 559
  • Last Modified:

How to apply validation control in asp:radio button list

I have the asp:radiobuttons
How to apply required validation control in such a way that the users access atleast one.

 <asp:RadioButtonList ID="RBL_mode" runat="server" AutoPostBack="True"
                            CssClass="report_color" onselectedindexchanged="RBL_mode_SelectedIndexChanged"
                            RepeatDirection="Horizontal" Width="674px">
                            <asp:ListItem Value="1" Selected="False">Monovalent RDT</asp:ListItem>
                             <asp:ListItem Value="11" Selected="False">Monovalent RDT+Slide</asp:ListItem>
                            <asp:ListItem Value="2" Selected="False">Bivalent RDT</asp:ListItem>
                             <asp:ListItem Value="22" Selected="False">Bivalent RDT+Slide</asp:ListItem>
                            <asp:ListItem Value="3" Selected="False">Referral</asp:ListItem>
                            <asp:ListItem Value="0" Selected="False">Slide only</asp:ListItem>
                        </asp:RadioButtonList>
0
searchsanjaysharma
Asked:
searchsanjaysharma
2 Solutions
 
jayakrishnabhCommented:
<asp:RadioButtonList ID="RBL_mode" runat="server" AutoPostBack="True" onselectedindexchanged="RBL_mode_SelectedIndexChanged"
                            CssClass="report_color" RepeatDirection="Horizontal" Width="674px">
                            <asp:ListItem Value="1" Selected="False">Monovalent RDT</asp:ListItem>
                             <asp:ListItem Value="11" Selected="False">Monovalent RDT+Slide</asp:ListItem>
                            <asp:ListItem Value="2" Selected="False">Bivalent RDT</asp:ListItem>
                             <asp:ListItem Value="22" Selected="False">Bivalent RDT+Slide</asp:ListItem>
                            <asp:ListItem Value="3" Selected="False">Referral</asp:ListItem>
                            <asp:ListItem Value="0" Selected="False">Slide only</asp:ListItem>
                        </asp:RadioButtonList>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="RBL_mode" Enabled="true"
             ValidationGroup="ValidationGroup1"></asp:RequiredFieldValidator>
        <asp:Button ID="Button1" runat="server" Text="Button" CausesValidation="true" ValidationGroup="ValidationGroup1" />
0
 
duttcomCommented:
A RequiredFieldValidator for your list would look something like this-

<asp:RequiredFieldValidator runat="server" ErrorMessage="You must select at least one option!!!" ID="RBL_mode_validator" ControlToValidate="RBL_mode">
                </asp:RequiredFieldValidator>

This is a simple validator that will assume a starting value for the radiobuttonlist is null and requires that the value of the list changes in order for it to be valid. So this will work well for entering records for the first time, but not as well if you are editing records which already have a value (in which case you will need to do a custom validator with code to check that an option has been selected in the list).
0
 
searchsanjaysharmaAuthor Commented:
tx
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now