blazor-devexpress-dot-blazor-dot-dxgridsummaryitem-3dd212b6.md
Specifies the display format for the summary value.
Namespace : DevExpress.Blazor
Assembly : DevExpress.Blazor.v25.2.dll
NuGet Package : DevExpress.Blazor
[DefaultValue(null)]
[Parameter]
public string ValueDisplayFormat { get; set; }
| Type | Default | Description |
|---|---|---|
| String | null |
A string that specifies the display format. null to inherit the value from the DxGridDataColumn.DisplayFormat property.
|
The Grid creates display text for a summary item based on the following predefined display formats:
<aggregate function>: <summary value>For the COUNT summary and summaries that are shown in the same column where the values are calculated.
Example: Max: 130<aggregate function> of <column caption>: <summary value>For summaries that are shown in another column.
Example: Max of Quantity: 130
Use the ValueDisplayFormat property to specify a display format for the summary item value (the <summary value> part). Refer to the following topic for additional information about supported format strings: Format types in .NET.
The ValueDisplayFormat property accepts format strings with the {0} placeholder for the summary value. The format string syntax is the following: <custom text>{0:<format specifier>}<custom text>
<DxGrid Data="@Data" >
<Columns>
<DxGridDataColumn FieldName="CompanyName" />
<DxGridDataColumn FieldName="City" />
<DxGridDataColumn FieldName="Country" />
<DxGridDataColumn FieldName="UnitPrice" DisplayFormat="c"/>
<DxGridDataColumn FieldName="Quantity" />
<DxGridDataColumn FieldName="Total" UnboundType="GridUnboundColumnType.Decimal"
UnboundExpression="[UnitPrice] * [Quantity]" DisplayFormat="c" />
</Columns>
<TotalSummary>
@* Summaries in the UnitPrice column use format specified at the column level *@
<DxGridSummaryItem SummaryType="GridSummaryItemType.Min" FieldName="UnitPrice" />
<DxGridSummaryItem SummaryType="GridSummaryItemType.Max" FieldName="UnitPrice" />
<DxGridSummaryItem SummaryType="GridSummaryItemType.Avg" FieldName="Quantity"
ValueDisplayFormat="0.00" />
<DxGridSummaryItem SummaryType="GridSummaryItemType.Sum" FieldName="Total"
ValueDisplayFormat="~${0:n0}" />
</TotalSummary>
</DxGrid>
A summary item’s DisplayText property allows you to specify display text pattern for this summary. A display text string can include static text and placeholders for the summary value and column caption.
<DxGrid Data="@Data">
<Columns>
<DxGridDataColumn FieldName="CompanyName" />
<DxGridDataColumn FieldName="UnitPrice" DisplayFormat="c" />
<DxGridDataColumn FieldName="Quantity"/>
<DxGridDataColumn FieldName="Total" UnboundType="GridUnboundColumnType.Decimal"
DisplayFormat="c" UnboundExpression="[UnitPrice]*[Quantity]" />
</Columns>
<TotalSummary>
<DxGridSummaryItem SummaryType="GridSummaryItemType.Avg" FieldName="Quantity"
ValueDisplayFormat="0.00" />
<DxGridSummaryItem FieldName="Total" SummaryType="GridSummaryItemType.Min"
DisplayText="The cheapest order is {0}" />
<DxGridSummaryItem FieldName="Total" SummaryType="GridSummaryItemType.Max"
DisplayText="The most expensive order is is {0}" />
</TotalSummary>
</DxGrid>
Run Demo: Grid - Total Summary
Run Demo: Grid - Group Summary
For additional information about summaries in the Grid component, refer to the following topic: Summary in Blazor Grid.
See Also