The code sample below demonstrates how you can specify total summaries.
The image below shows the result.
Aspx |
<dx:ASPxCardView ID="ASPxCardView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" KeyFieldName="ProductID">
<Settings ShowSummaryPanel="True" />
<Columns>
...
</Columns>
<TotalSummary>
<dx:ASPxCardViewSummaryItem FieldName="ProductID" SummaryType="Count" DisplayFormat="Count of products = {0} " />
<dx:ASPxCardViewSummaryItem FieldName="UnitPrice" SummaryType="Min" DisplayFormat="Minimum price = ${0} " />
<dx:ASPxCardViewSummaryItem FieldName="UnitPrice" SummaryType="Max" DisplayFormat="Maximum price = ${0} " />
<dx:ASPxCardViewSummaryItem FieldName="UnitsInStock" SummaryType="Sum" DisplayFormat="Units in stock = {0} " />
</TotalSummary>
</dx:ASPxCardView>
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This example shows how to calculate the average price and display it in the ASPxCardView's summary panel:

C# |
ASPxCardViewSummaryItem totalSummary = new ASPxCardViewSummaryItem();
totalSummary.FieldName = "UnitPrice";
totalSummary.SummaryType = DevExpress.Data.SummaryItemType.Average;
ASPxCardView1.TotalSummary.Add(totalSummary);
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