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DxGrid.GetGroupSummaryItems() Method

Gets the collection of group summary items.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
public IReadOnlyList<IGridSummaryItem> GetGroupSummaryItems()

#Returns

Type Description
IReadOnlyList<IGridSummaryItem>

The collection of group summary items.

#Remarks

The following code snippet customizes group rows. These rows contain the group field values and summary values that are formatted in bold.

@using Microsoft.EntityFrameworkCore
@inject IDbContextFactory<NorthwindContext> NorthwindContextFactory
@implements IDisposable

<DxGrid Data="@Data"
        ShowGroupPanel="true">
    <Columns>
        <DxGridDataColumn FieldName="Country" GroupIndex="0">
            <GroupRowTemplate>
                <text>@context.DataColumn.FieldName: @context.GroupValue</text>
                @{
                    var summaryItems = context.Grid.GetGroupSummaryItems();
                    if (summaryItems.Any()) {
                        <text> (</text>
                        foreach (var i in summaryItems) {
                            if (i != summaryItems.First()) {
                                <text>, </text>
                            }
                            @context.Grid.GetGroupSummaryLabel(i, context.VisibleIndex)
                            <text>: </text>
                            <b>@context.Grid.GetGroupSummaryFormattedValue(i, context.VisibleIndex)</b>
                        }
                        <text>)</text>
                    }
                }
            </GroupRowTemplate>
        </DxGridDataColumn>
        <DxGridDataColumn FieldName="City" />
        <DxGridDataColumn FieldName="OrderDate"/>
        <DxGridDataColumn FieldName="UnitPrice" DisplayFormat="c" />
        <DxGridDataColumn FieldName="Quantity" />
    </Columns>
    <GroupSummary>
        <DxGridSummaryItem SummaryType="GridSummaryItemType.Count" FieldName="Country" />
        <DxGridSummaryItem SummaryType="GridSummaryItemType.Max" FieldName="OrderDate" />
    </GroupSummary>
</DxGrid>

@code {
    object Data { get; set; }
    NorthwindContext Northwind { get; set; }

    protected override void OnInitialized() {
        Northwind = NorthwindContextFactory.CreateDbContext();
        Data = Northwind.Invoices
            .ToList();
    }

    public void Dispose() {
        Northwind?.Dispose();
    }
}

Blazor Grid Group Row Template

Run Demo: Grid - Group Row Template

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

See Also