DxGridSummaryItem.FieldName Property

Specifies a data field whose values are used to calculate a summary.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue(null)]
[Parameter]
public string FieldName { get; set; }

Property Value

Type	Default	Description
String	null	The field name.

Remarks

The DxGrid supports total and group summaries. Each summary can contain predefined and custom summary items.

Use the summary item’s SummaryType property to specify an aggregate function to calculate total and group summary values. The following functions are available: Sum, Min, Max, Avg, and Count.

Avg, Min, Max, and Sum functions require that you set the FieldName property to a data field whose values take part in calculations. The Min and Max functions require a numeric or date-time data field. Avg and Sum functions work with numeric fields only.

If you select the Count function, you can leave the FieldName property set to an empty string and use the FooterColumnName property to specify which column displays the summary value.

<DxGrid @ref="Grid"
        Data="@Data"
        PageSize="20"
        ShowGroupPanel="true"
        SizeMode="Params.SizeMode"
        ColumnResizeMode="GridColumnResizeMode.NextColumn"
        TextWrapEnabled="false">
    <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: Grid - Total Summary Run Demo: Grid - Group Summary

Watch Video: Grid - Summary

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

Implements

FieldName