I forget provide my aspx file. I'm using NetAdvantage version 14.1.20141.2011 latest release. This is my code:

<ig:WebDataGrid ID="UG_PricingTiers" runat="server" Height="175px" Width="100%" AutoGenerateColumns="False" EnableDataViewState="True"
DataKeyFields="ID" EnableAjax="False" Font-Bold="False">
<Columns>
<ig:BoundDataField DataFieldName="SRVC_Ledger_Tier_Code_Type_Lkup_ID" Key="SRVC_Ledger_Tier_Code_Type_Lkup_ID" Width="5%" CssClass="ReadOnlyTextLeft">
<Header Text="Tier ID" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField CssClass="ReadOnlyTextLeft" DataFieldName="SRVC_Terms_Tier_Type_Lkup_ID" Key="SRVC_Terms_Tier_Type_Lkup_ID" Width="15%">
<Header Text="Tier Type" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Tier_Threshold_Amt" Key="Tier_Threshold_Amt" Width="10%" DataFormatString="{0:C2}"
CssClass="ReadOnlyTextRight" DataType="System.String">
<Header Text="Tier Threshold Amount" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Effective_Dt" Key="Effective_Dt" Width="10%" CssClass="ReadOnlyTextLeft" DataType="System.DateTime">
<Header Text="Effective Date" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Common_Int_Index_Lkup_ID" Key="Common_Int_Index_Lkup_ID" Width="15%" CssClass="ReadOnlyTextLeft" DataType="System.Object">
<Header Text="Pricing Index" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Rate_Pct" Key="Interest_Rate_Pct" Width="15%" DataFormatString="{0:P5}" CssClass="ReadOnlyTextRight">
<Header Text="Rate" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Floor_Pct" Key="Interest_Floor_Pct" Width="15%" DataFormatString="{0:P5}" CssClass="ReadOnlyTextRight">
<Header Text="Floor" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Ceiling_Pct" Key="Interest_Ceiling_Pct" Width="15%" DataFormatString="{0:P5}" CssClass="ReadOnlyTextRight">
<Header Text="Ceiling" CssClass="NormalTextCenter"></Header>
<Footer CssClass="NormalTextCenter"></Footer>
</ig:BoundDataField>
<ig:BoundDataField DataFieldName="ID" Key="ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="SRVC_FixedFloat_Type_Lkup_ID" Key="SRVC_FixedFloat_Type_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="Common_Accrl_Basis_Code_Lkup_ID" Key="Common_Accrl_Basis_Code_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="SRVC_Interest_Rate_Change_Frequency_Type_Lkup_ID" Key="SRVC_Interest_Rate_Change_Frequency_Type_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="SRVC_Terms_Rate_Change_Apply_Lkup_ID" Key="SRVC_Terms_Rate_Change_Apply_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="SRVC_Arms_Plan_Type_Lkup_ID" Key="SRVC_Arms_Plan_Type_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="SRVC_Terms_Default_Rate_Plan_Type_Lkup_ID" Key="SRVC_Terms_Default_Rate_Plan_Type_Lkup_ID" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Index_Release_1_Pct" Key="Interest_Index_Release_1_Pct" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Index_Release_2_Pct" Key="Interest_Index_Release_2_Pct" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Relationship_Code_1" Key="Interest_Relationship_Code_1" Hidden="True"></ig:BoundDataField>
<ig:BoundDataField DataFieldName="Interest_Relationship_Code_2" Key="Interest_Relationship_Code_2" Hidden="True"></ig:BoundDataField>
<ig:UnboundField Hidden="True" Key="Status" />
<ig:UnboundField Key="uSRVC_Ledger_Tier_Code_Type_Lkup_ID" Hidden="True"></ig:UnboundField>
<ig:UnboundField Key="uSRVC_Terms_Tier_Type_Lkup_ID" Hidden="True"></ig:UnboundField>
<ig:UnboundField Key="uTier_Threshold_Amt" Hidden="True"></ig:UnboundField>
<ig:UnboundField Key="uCommon_Int_Index_Lkup_ID" Hidden="True"></ig:UnboundField>
</Columns>
<EditorProviders>
<ig:DropDownProvider ID="Ledger_Tier_Code_Provider" StretchHeight="False">
<EditorControl DropDownContainerMaxHeight="160px" EnableAnimations="False"
DisplayMode="DropDownList" NullText="0" DropDownContainerHeight="160px">
<ClientEvents DropDownOpening="DropDownProvider_Opening" />
</EditorControl>
</ig:DropDownProvider>
<ig:DropDownProvider ID="SRVC_Terms_Tier_Type_Provider" StretchHeight="False">
<EditorControl DropDownContainerMaxHeight="160px" EnableAnimations="False"
DisplayMode="DropDownList" NullText="0" DropDownContainerHeight="160px">
<ClientEvents DropDownOpening="DropDownProvider_Opening" />
</EditorControl>
</ig:DropDownProvider>
<ig:DropDownProvider ID="Common_Int_Index_Prodiver" StretchHeight="False">
<EditorControl DropDownContainerMaxHeight="160px" EnableAnimations="False"
DisplayMode="DropDownList" NullText="0" DropDownContainerHeight="160px">
<ClientEvents DropDownOpening="DropDownProvider_Opening" />
</EditorControl>
</ig:DropDownProvider>
<ig:DatePickerProvider ID="Effective_Dt_PricingTiers_Provider">
<EditorControl runat="server" EditModeFormat="MM/dd/yyyy" EnableViewState="true">
</EditorControl>
</ig:DatePickerProvider>
<ig:CurrencyEditorProvider ID="TB_Currency_PricingTiers">
<EditorControl runat="server" CssClass="TextRight" MaxLength="10" MinDecimalPlaces="2">
</EditorControl>
</ig:CurrencyEditorProvider>
<ig:PercentEditorProvider ID="TB_Percent_PricingTiers">
<EditorControl runat="server" CssClass="TextRight" MaxLength="10" MinDecimalPlaces="5">
</EditorControl>
</ig:PercentEditorProvider>
</EditorProviders>
<Behaviors>
<ig:EditingCore BatchUpdating="True">
<Behaviors>
<ig:CellEditing Enabled="true" EditCellCssClass="NormalText">
<ColumnSettings>
<ig:EditingColumnSetting ColumnKey="SRVC_Ledger_Tier_Code_Type_Lkup_ID" EditorID="Ledger_Tier_Code_Provider" />
<ig:EditingColumnSetting ColumnKey="SRVC_Terms_Tier_Type_Lkup_ID" EditorID="SRVC_Terms_Tier_Type_Provider" />
<ig:EditingColumnSetting ColumnKey="Common_Int_Index_Lkup_ID" EditorID="Common_Int_Index_Prodiver" />
<ig:EditingColumnSetting ColumnKey="Effective_Dt" EditorID="Effective_Dt_PricingTiers_Provider" />
<ig:EditingColumnSetting ColumnKey="Tier_Threshold_Amt" EditorID="TB_Currency_PricingTiers" />
<ig:EditingColumnSetting ColumnKey="Interest_Rate_Pct" EditorID="TB_Percent_PricingTiers" />
<ig:EditingColumnSetting ColumnKey="Interest_Floor_Pct" EditorID="TB_Percent_PricingTiers" />
<ig:EditingColumnSetting ColumnKey="Interest_Ceiling_Pct" EditorID="TB_Percent_PricingTiers" />
</ColumnSettings>
<CellEditingClientEvents EnteringEditMode="UG_PricingTiers_CellEditing_EnteringEditMode" />
<EditModeActions MouseClick="Single" EnableOnActive="True" />
</ig:CellEditing>
</Behaviors>
</ig:EditingCore>
<ig:Sorting Enabled="true">
<SortingClientEvents ColumnSorting="" />
</ig:Sorting>
<ig:Activation Enabled="true">
<ActivationClientEvents ActiveCellChanging="" />
</ig:Activation>
<ig:Selection CellClickAction="Cell" RowSelectType="Single" Enabled="true">
</ig:Selection>
<ig:RowSelectors Enabled="True" RowNumbering="False" EnableInheritance="True">
<RowSelectorClientEvents RowSelectorClicked="UG_PricingTiers_RowSelector_RowSelectorClicked" />
</ig:RowSelectors>
<ig:Paging PagerAppearance="Bottom" PageSize="6" Enabled="false" QuickPages="9" />
<ig:ColumnResizing>
<ColumnSettings>
<ig:ColumnResizeSetting />
</ColumnSettings>
</ig:ColumnResizing>
</Behaviors>
</ig:WebDataGrid>