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ASPxCardViewSummaryDisplayTextEventArgs.Item Property

Gets a summary item whose value is being processed.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v22.2.dll

NuGet Package: DevExpress.Web


public ASPxCardViewSummaryItem Item { get; }

Property Value

Type Description

An ASPxCardViewSummaryItem object that represents the summary item whose value is being processed.


The following example calculates a summary in the CategoryID column based on the value in the ASPxSpinEdit below it.

When an end user changes a spin editor value, the editor sends a custom callback to the server in the client-side NumberChanged event handler. In the server-side SummaryDisplayText event handler, the grid calculates the summary value and sets it to the e.Text parameter.

View Example

<head runat="server">
    <form id="form1" runat="server">
        <dx:ASPxCardView ID="ASPxCardView1" KeyFieldName="CategoryID" OnSummaryDisplayText="ASPxCardView1_SummaryDisplayText" AutoGenerateColumns="False" ClientInstanceName="grid" DataSourceID="AccessDataSource1" runat="server">
            <Settings ShowSummaryPanel="True" />
                <dx:CardViewTextColumn FieldName="CategoryID" ReadOnly="True" VisibleIndex="0">
                <dx:CardViewTextColumn FieldName="CategoryName" VisibleIndex="1">
                <dx:CardViewTextColumn FieldName="Description" VisibleIndex="2">
                <dx:ASPxCardViewSummaryItem FieldName="CategoryID" SummaryType="Sum" />
        <br />
        <dx:ASPxSpinEdit ID="ASPxSpinEdit1" runat="server" Number="0" Height="21">
        <ClientSideEvents NumberChanged="function(s, e) {
        }" />

    <asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/nwind.mdb"
        SelectCommand="SELECT * FROM [Categories]"></asp:AccessDataSource>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e) {

    protected void ASPxCardView1_SummaryDisplayText(object sender, DevExpress.Web.ASPxCardViewSummaryDisplayTextEventArgs e) {
        if (e.Item.FieldName == "CategoryID")
            e.Text = string.Format("Sum = {0}", Convert.ToDouble(e.Value) * Convert.ToDouble(ASPxSpinEdit1.Value));
See Also