Radio button list in details view error

[primagic]

I have a details view and in the edit template I have a radio button list.

In view mode the field (Gender) is displaying a value from the database - Male.

When in edit mode, I have a radio button list whose datasource is a list which is derived from a table in the database. Male or Female.

However I get the error

'RadioButtonList1' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

Even though Male is an option as a radio button and is also the value stored in the field.

Any ideas

 

[primagic]

Sorry here is my code in asp.net

<asp:TemplateField HeaderText="Gender">
                                <ItemTemplate>
                                <asp:Label ID="lblGender" runat="server" Text='<%# Eval("Gender") %>' ></asp:Label>
                                </ItemTemplate>

                                <EditItemTemplate>
                                    
                                    <asp:RadioButtonList ID="RadioButtonList1" runat="server" 
                                        RepeatDirection="Horizontal" DataSourceID="GetGender" DataTextField="Gender" 
                                        DataValueField="Gender" SelectedValue='<%# Bind("Gender") %>' >
                                                                      </asp:RadioButtonList>
                                    
                                 
                                    <asp:SqlDataSource ID="GetGender" runat="server" 
                                        ConnectionString="<%$ ConnectionStrings:HostLinkConnectionString %>" 
                                        SelectCommand="SELECT [Gender] FROM [tblGenders]"></asp:SqlDataSource>
                                    
                                 
                                </EditItemTemplate>
                            </asp:TemplateField>

 

[jbenson001]

I don't know how many times I can tell you not to use the DataSource controls. Again, another issue you are having because you are using them.
Read this:

http://stackoverflow.com/questions/...d-because-it-does-not-exist-in-the-list-of-it