<dx:BootstrapGridView runat="server" DataSourceID="CompaniesOrdersDataSource" KeyFieldName="OrderID">
    <Settings ShowFooter="True" />
    <Columns>
        <dx:BootstrapGridViewDataColumn FieldName="CompanyName" />
        <dx:BootstrapGridViewTextColumn FieldName="UnitPrice">
            <PropertiesTextEdit DisplayFormatString="c" />
        </dx:BootstrapGridViewTextColumn>
        <dx:BootstrapGridViewDataColumn FieldName="Quantity" />
        <dx:BootstrapGridViewTextColumn FieldName="Total" UnboundType="Decimal" UnboundExpression="UnitPrice * Quantity">
            <PropertiesTextEdit DisplayFormatString="c" />
        </dx:BootstrapGridViewTextColumn>
    </Columns>
    <TotalSummary>
        <dx:ASPxSummaryItem FieldName="CompanyName" SummaryType="Count" />
        <dx:ASPxSummaryItem FieldName="Total" SummaryType="Sum" />
    </TotalSummary>
    <SettingsPager NumericButtonCount="6"></SettingsPager>
</dx:BootstrapGridView>

<dx:BootstrapGridView runat="server" DataSourceID="CompaniesOrdersDataSource" KeyFieldName="OrderID">
    <Settings ShowGroupPanel="True" />
    <Columns>
        <dx:BootstrapGridViewDataColumn FieldName="Country" GroupIndex="0" />
        <dx:BootstrapGridViewDataColumn FieldName="City" GroupIndex="1" />
        <dx:BootstrapGridViewDataColumn FieldName="CompanyName" />
        <dx:BootstrapGridViewDataColumn FieldName="Region" />
        <dx:BootstrapGridViewTextColumn FieldName="UnitPrice">
            <PropertiesTextEdit DisplayFormatString="c" />
        </dx:BootstrapGridViewTextColumn>
        <dx:BootstrapGridViewDataColumn FieldName="Quantity" />
        <dx:BootstrapGridViewTextColumn FieldName="Total" UnboundType="Decimal" UnboundExpression="UnitPrice * Quantity">
            <PropertiesTextEdit DisplayFormatString="c" />
        </dx:BootstrapGridViewTextColumn>
    </Columns>
    <GroupSummary>
        <dx:ASPxSummaryItem FieldName="Total" SummaryType="Sum" />
        <dx:ASPxSummaryItem FieldName="CompanyName" SummaryType="Count" />
    </GroupSummary>
    <SettingsPager NumericButtonCount="6"></SettingsPager>
</dx:BootstrapGridView>

<dx:BootstrapGridView ID="GridViewCustomSummary" OnCustomSummaryCalculate="GridViewCustomSummary_CustomSummaryCalculate" OnCustomUnboundColumnData="GridViewCustomSummary_CustomUnboundColumnData" runat="server" DataSourceID="CompaniesOrdersDataSource" KeyFieldName="OrderID">
    <Settings ShowGroupPanel="true" ShowFooter="true" />
    <SettingsBehavior AutoExpandAllGroups="false" />
    <Columns>
        <dx:BootstrapGridViewDataColumn FieldName="Country" GroupIndex="0" />
        <dx:BootstrapGridViewDataColumn FieldName="City" GroupIndex="1" />
        <dx:BootstrapGridViewDataColumn FieldName="CompanyName" Width="40%" />
        <dx:BootstrapGridViewTextColumn FieldName="UnitPrice">
        </dx:BootstrapGridViewTextColumn>
        <dx:BootstrapGridViewDataColumn FieldName="Quantity" />
        <dx:BootstrapGridViewTextColumn FieldName="Total" UnboundType="Decimal" Width="20%" UnboundExpression="UnitPrice * Quantity">
        </dx:BootstrapGridViewTextColumn>
        <dx:BootstrapGridViewDataColumn FieldName="Currency" Width="10%" UnboundType="String" ReadOnly="True">
            <SettingsEditForm Visible="False" />
        </dx:BootstrapGridViewDataColumn>
    </Columns>
    <GroupSummary>
        <dx:ASPxSummaryItem FieldName="UnitPrice" SummaryType="Custom" />
    </GroupSummary>
    <TotalSummary>
        <dx:ASPxSummaryItem FieldName="Total" ShowInColumn="Total" SummaryType="Custom" />
    </TotalSummary>
    <SettingsPager NumericButtonCount="6"></SettingsPager>
</dx:BootstrapGridView>

decimal usd, eur;
protected void GridViewCustomSummary_CustomSummaryCalculate(object sender, DevExpress.Data.CustomSummaryEventArgs e) {
    if (e.IsGroupSummary) {
        if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Start) {
            usd = 0;
            eur = 0;
        } else if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Calculate) {
            string currency = e.GetValue("Currency").ToString();
            if (currency == "USD")
                usd += Convert.ToDecimal(e.GetValue("UnitPrice"));
            else if (currency == "EUR")
                eur += Convert.ToDecimal(e.GetValue("UnitPrice"));
        } else if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Finalize) {
            e.TotalValue = string.Format("Sum EUR: {0}; Sum USD: {1}", FormatDecimal(eur), FormatDecimal(usd));
        }
    } else if (e.IsTotalSummary) {
        if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Start) {
            usd = 0;
            eur = 0;
        } else if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Calculate) {
            string currency = e.GetValue("Currency").ToString();
            if (currency == "USD")
                usd += Convert.ToDecimal(e.GetValue("Total"));
            else if (currency == "EUR")
                eur += Convert.ToDecimal(e.GetValue("Total"));
        } else if (e.SummaryProcess == DevExpress.Data.CustomSummaryProcess.Finalize) {
            e.TotalValue = string.Format("Total €{0}; ${1}", FormatDecimal(eur), FormatDecimal(usd));
        }
    }
}
string FormatDecimal(decimal value) {
    return string.Format("{0:n}", value);
}
protected void GridViewCustomSummary_CustomUnboundColumnData(object sender, DevExpress.Web.Bootstrap.BootstrapGridViewColumnDataEventArgs e) {
    if (e.Column.FieldName == "Currency")
        e.Value = e.ListSourceRowIndex % 2 == 0 ? "USD" : "EUR";
}

<dx:BootstrapGridView runat="server" DataSourceID="OrdersDataSource" KeyFieldName="OrderID;ProductID" >
    <SettingsEditing Mode="Batch" BatchEditSettings-HighlightSummaryItems="true" />
    <ClientSideEvents BatchEditEndEditing="onBatchEditEndEditing" />
    <SettingsDataSecurity AllowEdit="true" AllowDelete="true" />
    <Settings ShowFooter="true" />
    <SettingsBehavior AutoExpandAllGroups="true" />
    <Columns>
        <dx:BootstrapGridViewCommandColumn ShowCancelButton="true" ShowDeleteButton="true" ShowNewButtonInHeader="false" Width="80px" />
        <dx:BootstrapGridViewDataColumn FieldName="OrderID" GroupIndex="0"/>
        <dx:BootstrapGridViewTextColumn FieldName="ProductName"/>
        <dx:BootstrapGridViewSpinEditColumn FieldName="UnitPrice" Width="100">
            <PropertiesSpinEdit DisplayFormatString="c" DisplayFormatInEditMode="true" MinValue="0" MaxValue="60000"/>
        </dx:BootstrapGridViewSpinEditColumn>
        <dx:BootstrapGridViewSpinEditColumn FieldName="Quantity" Width="100">
            <PropertiesSpinEdit MinValue="0" MaxValue="60000" NumberType="Integer" />
        </dx:BootstrapGridViewSpinEditColumn>
        <dx:BootstrapGridViewSpinEditColumn FieldName="Discount" Width="150">
            <PropertiesSpinEdit MinValue="0" MaxValue="1" DecimalPlaces="2" Increment="0.1" NumberType="Float" DisplayFormatString="p0" />
        </dx:BootstrapGridViewSpinEditColumn>
        <dx:BootstrapGridViewTextColumn FieldName="Total" UnboundType="Decimal" UnboundExpression="[UnitPrice] * [Quantity] * (1 - [Discount])">
            <PropertiesTextEdit DisplayFormatString="c" />
        </dx:BootstrapGridViewTextColumn>
    </Columns>
    <TotalSummary>
        <dx:ASPxSummaryItem FieldName="ProductName" SummaryType="Count" />
        <dx:ASPxSummaryItem FieldName="Discount" SummaryType="Max" DisplayFormat="Max Discount={0:p0}" />
        <dx:ASPxSummaryItem FieldName="Total" SummaryType="Sum" />
    </TotalSummary>
    <GroupSummary>
        <dx:ASPxSummaryItem FieldName="ProductName" SummaryType="Count" />
        <dx:ASPxSummaryItem FieldName="Discount" SummaryType="Max" DisplayFormat="Max Discount={0:p0}" />
        <dx:ASPxSummaryItem FieldName="Total" SummaryType="Sum" />
    </GroupSummary>
    <SettingsPager NumericButtonCount="6" />
</dx:BootstrapGridView>

function onBatchEditEndEditing(s, e) {
    var unitPriceColumn = s.GetColumnByField("UnitPrice");
    var quantityColumn = s.GetColumnByField("Quantity");
    var discountColumn = s.GetColumnByField("Discount");
    var unitPriceValue = s.batchEditApi.GetCellValue(e.visibleIndex, "UnitPrice");
    var quantityValue = s.batchEditApi.GetCellValue(e.visibleIndex, "Quantity");
    var discountValue = s.batchEditApi.GetCellValue(e.visibleIndex, "Discount");
    if (e.rowValues.hasOwnProperty(unitPriceColumn.index))
        unitPriceValue = e.rowValues[unitPriceColumn.index].value;
    if (e.rowValues.hasOwnProperty(quantityColumn.index))
        quantityValue = e.rowValues[quantityColumn.index].value;
    if (e.rowValues.hasOwnProperty(discountColumn.index))
        discountValue = e.rowValues[discountColumn.index].value;
    var newTotalColumnValue = unitPriceValue * quantityValue * (1 - discountValue);
    s.batchEditApi.SetCellValue(e.visibleIndex, "Total", newTotalColumnValue);
}