RequiredFieldValidator Control:
<asp:RequiredFieldValidator ID="rfvcandidate"
runat="server" ControlToValidate ="ddlcandidate"
ErrorMessage="Please choose a candidate"
InitialValue="Please choose a candidate">
</asp:RequiredFieldValidator>
RangeValidator Control:
<asp:RangeValidator ID="rvclass" runat="server" ControlToValidate="txtclass"
ErrorMessage="Enter your class (6 - 12)" MaximumValue="12"
MinimumValue="6" Type="Integer">
</asp:RangeValidator>
CompareValidator Control: <asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="CompareValidator"> </asp:CompareValidator>
CustomValidator:
<asp:CustomValidator ID="CustomValidator1" runat="server" ClientValidationFunction=.cvf_func. ErrorMessage="CustomValidator">
</asp:CustomValidator>
Validation Summary: <asp:ValidationSummary ID="ValidationSummary1" runat="server" DisplayMode = "BulletList" ShowSummary = "true" HeaderText="Errors:" />