ASPxGridView.GetTotalSummaryValue(ASPxSummaryItem) Method
Returns a summary value calculated against all data rows.
Namespace: DevExpress.Web
Assembly:
DevExpress.Web.v24.2.dll
Declaration
public object GetTotalSummaryValue(
ASPxSummaryItem item
)
Public Function GetTotalSummaryValue(
item As ASPxSummaryItem
) As Object
Parameters
Returns
| Type |
Description |
| Object |
An object which represents the summary value.
|
The ASPxGridView allows you to calculate summaries which are aggregate functions based on values of data source fields. There are two predefined summary types: the total and group summaries. The total summary calculates an aggregate function by all rows and displays the result in a column’s footer. The group summary calculates an aggregate function for each group of rows and displays the result in a group row. Both summary types are represented by a ASPxSummaryItem object.
Online Example
View Example: How to use group footer and footer templates to customize group and total summaries
Example
This sample illustrates how to calculate the total summary value based on values of other summaries
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DevExpress.Web.ASPxGridView;
namespace WebApplication11 {
public partial class _Default : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
}
protected void ASPxGridView1_CustomSummaryCalculate(object sender, DevExpress.Data.CustomSummaryEventArgs e) {
ASPxSummaryItem incomeSummary = (sender as ASPxGridView).TotalSummary["Income"];
ASPxSummaryItem expenseSummary = (sender as ASPxGridView).TotalSummary["Expense"];
Decimal income = Convert.ToDecimal(((ASPxGridView)sender).GetTotalSummaryValue(incomeSummary));
Decimal expense = Convert.ToDecimal(((ASPxGridView)sender).GetTotalSummaryValue(expenseSummary));
e.TotalValue = income - expense;
}
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication11._Default" %>
<%@ register Assembly="DevExpress.Web.ASPxGridView.v9.1" Namespace="DevExpress.Web.ASPxGridView"
TagPrefix="dxwgv" %>
<%@ Register assembly="DevExpress.Web.ASPxEditors.v9.1" namespace="DevExpress.Web.ASPxEditors" tagprefix="dxe" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dxwgv:aspxgridview ID="ASPxGridView1" runat="server"
AutoGenerateColumns="False" DataSourceID="AccessDataSource1"
KeyFieldName="ID"
oncustomsummarycalculate="ASPxGridView1_CustomSummaryCalculate">
<totalsummary>
<dxwgv:aspxsummaryitem FieldName="Income" ShowInColumn="Income"
SummaryType="Sum" />
<dxwgv:aspxsummaryitem FieldName="Expense" ShowInColumn="Expense"
SummaryType="Sum" />
<dxwgv:aspxsummaryitem FieldName="Total" ShowInColumn="Total"
SummaryType="Custom" />
</totalsummary>
<columns>
<dxwgv:gridviewdatatextcolumn FieldName="Total" UnboundType="String"
VisibleIndex="4">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="ID" Visible="False" VisibleIndex="0">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="Income" VisibleIndex="1">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="Expense" VisibleIndex="2">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatadatecolumn FieldName="Date" VisibleIndex="3">
</dxwgv:gridviewdatadatecolumn>
</columns>
<settings ShowFooter="True" />
</dxwgv:aspxgridview>
</div>
<asp:accessdatasource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/Bookkeeper.mdb" SelectCommand="SELECT * FROM [Table1]">
</asp:accessdatasource>
</form>
</body>
</html>
<%@ Page Language="vb" AutoEventWireup="true" CodeBehind="Default.aspx.vb" Inherits="WebApplication11._Default" %>
<%@ register Assembly="DevExpress.Web.ASPxGridView.v9.1" Namespace="DevExpress.Web.ASPxGridView"
TagPrefix="dxwgv" %>
<%@ Register assembly="DevExpress.Web.ASPxEditors.v9.1" namespace="DevExpress.Web.ASPxEditors" tagprefix="dxe" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dxwgv:aspxgridview ID="ASPxGridView1" runat="server"
AutoGenerateColumns="False" DataSourceID="AccessDataSource1"
KeyFieldName="ID"
oncustomsummarycalculate="ASPxGridView1_CustomSummaryCalculate">
<totalsummary>
<dxwgv:aspxsummaryitem FieldName="Income" ShowInColumn="Income"
SummaryType="Sum" />
<dxwgv:aspxsummaryitem FieldName="Expense" ShowInColumn="Expense"
SummaryType="Sum" />
<dxwgv:aspxsummaryitem FieldName="Total" ShowInColumn="Total"
SummaryType="Custom" />
</totalsummary>
<columns>
<dxwgv:gridviewdatatextcolumn FieldName="Total" UnboundType="String"
VisibleIndex="4">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="ID" Visible="False" VisibleIndex="0">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="Income" VisibleIndex="1">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatatextcolumn FieldName="Expense" VisibleIndex="2">
</dxwgv:gridviewdatatextcolumn>
<dxwgv:gridviewdatadatecolumn FieldName="Date" VisibleIndex="3">
</dxwgv:gridviewdatadatecolumn>
</columns>
<settings ShowFooter="True" />
</dxwgv:aspxgridview>
</div>
<asp:accessdatasource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/Bookkeeper.mdb" SelectCommand="SELECT * FROM [Table1]">
</asp:accessdatasource>
</form>
</body>
</html>
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports DevExpress.Web.ASPxGridView
Namespace WebApplication11
Partial Public Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
End Sub
Protected Sub ASPxGridView1_CustomSummaryCalculate(ByVal sender As Object, ByVal e As DevExpress.Data.CustomSummaryEventArgs)
Dim incomeSummary As ASPxSummaryItem = (TryCast(sender, ASPxGridView)).TotalSummary("Income")
Dim expenseSummary As ASPxSummaryItem = (TryCast(sender, ASPxGridView)).TotalSummary("Expense")
Dim income As Decimal = Convert.ToDecimal((CType(sender, ASPxGridView)).GetTotalSummaryValue(incomeSummary))
Dim expense As Decimal = Convert.ToDecimal((CType(sender, ASPxGridView)).GetTotalSummaryValue(expenseSummary))
e.TotalValue = income - expense
End Sub
End Class
End Namespace
See Also