DxGrid.GroupSummary Property

Contains group summary items.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor

Declaration

[Parameter]
public RenderFragment GroupSummary { get; set; }

Property Value

Type	Description
RenderFragment	A collection of group summary items (UI fragment) that the browser renders in the grid’s markup.

Remarks

The DxGrid calculates group summary values across all records in a group. To create a group summary, declare a DxGridSummaryItem object in the GroupSummary template, and specify SummaryType and FieldName properties. You can set the SummaryType property to Custom and handle the CustomSummary event to create a custom summary item.

The Grid displays summary values in the group row after the group header. To show the summary value in the group footer, set the FooterColumnName property to the target column’s name.

The example below demonstrates how to create group summaries:

<DxGrid @ref="Grid"
        Data="@Data"
        ShowGroupPanel="true"
        SizeMode="Params.SizeMode" 
        KeyboardNavigationEnabled="true">
    <Columns>
        <DxGridDataColumn FieldName="Country" GroupIndex="0" Width="10%" />
        <DxGridDataColumn FieldName="City" GroupIndex="1" Width="10%" />
        <DxGridDataColumn FieldName="CompanyName" MinWidth="100" />
        <DxGridDataColumn FieldName="UnitPrice" DisplayFormat="c" Width="10%" />
        <DxGridDataColumn FieldName="Quantity" Width="10%" />
        <DxGridDataColumn FieldName="Total"
                          UnboundType="GridUnboundColumnType.Decimal"
                          UnboundExpression="[UnitPrice] * [Quantity]"
                          DisplayFormat="c"
                          MinWidth="100"
                          Width="15%" />
    </Columns>
    <GroupSummary>
        <DxGridSummaryItem SummaryType="GridSummaryItemType.Count" FieldName="CompanyName" />
        <DxGridSummaryItem SummaryType="GridSummaryItemType.Sum" FieldName="Total" />
    </GroupSummary>
</DxGrid>

Run Demo: Group Summary Run Demo: Group Footer Summary Watch Video: Summary

Use the following API members to modify display text strings of group summary items:

ValueDisplayFormat

Specifies format pattern for the summary value.

DisplayText

Specifies display text pattern for the summary item. A display text string can include static text and placeholders for summary value and column caption.

CustomizeSummaryDisplayText

Handle this event to customize display text for an individual calculated summary value. The Grid event argument allows you to obtain information about the Grid’s current state and add this information to a summary item’s display text.

For more information about summaries in the Grid component, refer to the following topic: Summary in Blazor Grid.