I have 3 dropdown list
1) DrpSchool_College
2) DrpSchool_College_Type
3) DrpSchool_College_Name
ASPX:-
1st dropdown list:-
<asp:DropDownList ID="DrpSchoolCollege" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DrpSchoolCollege_SelectedIndexChanged" >
<asp:ListItem Selected="True" Text="Select School / College ..." Value="Select School / College ..."></asp:ListItem>
<asp:ListItem Text="School" Value="School"></asp:ListItem>
<asp:ListItem Text="College" Value="College"></asp:ListItem>
</asp:DropDownList>
<asp:CompareValidator ID="CompareValidator2" runat="server" ControlToValidate="DrpSchoolCollege" Font-Bold="true" Font-Size="Large" ErrorMessage="*" Operator="NotEqual" Validat ...
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