or
<telerik:RadNumericTextBox runat="server" ShowSpinButtons="true" IncrementSettings-InterceptArrowKeys="true"
IncrementSettings-InterceptMouseWheel="true" ID="TotalAmountText" Width="300px"
Label="Total Amount:" />
<asp:RequiredFieldValidator runat="server" ID="TotalAmountRequiredFieldValidator"Regards,
ControlToValidate="TotalAmountText" EnableClientScript="true" Display="None"
CssClass="rsValidatorMsg" />


<t:RadButton ID="rbtnGenerateReport" runat="server" Text="Generate Report" Font-Bold="true" /><browsers> <browser refID="Default"> <controlAdapters> <adapter controlType="System.Web.UI.Page" adapterType="Telerik.Web.UI.RadSessionPageStateCompression" /> </controlAdapters> </browser></browsers><telerik:RadScriptManager ID="MainRadScriptManager" runat="server" EnableCdn="true"></telerik:RadScriptManager><telerik:RadListView ID="TestRadListView" runat="server" DataKeyNames="TestID" DataSourceID="TestLinqDataSource"> <LayoutTemplate> <asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder> </LayoutTemplate> <ItemTemplate> <p><%# Eval("Name") %></p> </ItemTemplate> <EditItemTemplate></EditItemTemplate></telerik:RadListView><asp:LinqDataSource ID="TestLinqDataSource" runat="server" ContextTypeName="TestDataContext" TableName="Tests"></asp:LinqDataSource><telerik:RadComboBox ID="cbProject" runat="server" AutoPostBack="True" OnSelectedIndexChanged="cbProject_SelectedIndexChanged" Height="120px" Sort="Ascending" EmptyMessage="Enter Project" MarkFirstMatch="true" ValidationGroup="ClassValidationGroup"> </telerik:RadComboBox> <asp:RequiredFieldValidator ID="reqCategory" ControlToValidate="cbProject" runat="server" ErrorMessage="Please Select A Project" ValidationGroup="ClassValidationGroup" InitialValue="" Display="Dynamic"> </asp:RequiredFieldValidator> <telerik:RadTabStrip ID="rpdTabStrip" Skin="Web20" runat="server" ClickSelectedTab="True" AutoPostBack="True" SelectedIndex="0" CausesValidation="true">