Un required validator pentru DropDownList cu RangeValidator
Validatorul RangeValidator va aparea in UI ca un RequiredValidator. Utilizatorul nu va putea trece mai departe daca nu alege o optiune de la 1 la 5. :) <asp:DropDownList ID="ddlTitle" runat="server"> <asp:ListItem Value="0">Select Title</asp:ListItem> <asp:ListItem Value="1">Mr</asp:ListItem> <asp:ListItem Value="2">Mrs</asp:ListItem> <asp:ListItem Value="3">Miss</asp:ListItem> <asp:ListItem Value="4">Ms</asp:ListItem> <asp:ListItem Value="5">Dr</asp:ListItem> </asp:DropDownList> <asp:RangeValidator ID="rangeValidator" Text="*" ErrorMessage="The title is required." ControlToValidate="ddlTitle" Type="Integer" MinimumValue="1" MaximumValue="5" runat="server...