aspnet-9626-components-pivot-grid-examples-data-shaping-how-to-sort-data-by-individual-columns-rows-in-olap-mode.md
The following example demonstrates how to implement Sorting by Summary in OLAP mode.
In this example, values of the Semester field are sorted by the Australia | Bendigo column summary values. To do this, two sort conditions represented by PivotGridFieldSortCondition instances are created. One of them represents an OLAP member that corresponds to the ‘Australia’ value, while another corresponds to the ‘Bendigo’ value. These sort conditions are added to the Semester field’s PivotGridFieldSortBySummaryInfo.Conditions collection to specify the column by which Semester values should be sorted. A data field that identifies the column is specified via the PivotGridFieldSortBySummaryInfo.Field property.
OLAP members corresponding to the Australia and Bendigo values are obtained using the ASPxPivotGrid.GetFieldValueOLAPMember method. Note that OLAP members can be obtained only for visible field values. For this reason, the Australia field value is expanded before initializing OLAP members in order to obtain the Bendigo OLAP member.
This sample uses the Adventure Works 2008 cube.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs"
Inherits="ASPxPivotGrid_OLAPSortBySummary._Default" %>
<%@ Register Assembly="DevExpress.Web.ASPxPivotGrid.v14.1, Version=14.1.7.0,
Culture=neutral, PublicKeyToken=b88d1754d700e49a"
Namespace="DevExpress.Web.ASPxPivotGrid"
TagPrefix="dx" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dx:ASPxPivotGrid ID="ASPxPivotGrid1" runat="server" DataSourceID="AccessDataSource1"
OnLoad="ASPxPivotGrid1_Load">
<Fields>
<dx:PivotGridField ID="fieldMonth" Area="RowArea" AreaIndex="0"
Caption="Month" FieldName="[Date].[Month of Year].[Month of Year]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldCountry" Area="ColumnArea" AreaIndex="0" Caption="Country"
FieldName="[Customer].[Country].[Country]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldCity" Area="ColumnArea" AreaIndex="1" Caption="City"
FieldName="[Customer].[City].[City]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldSales" Area="DataArea" AreaIndex="0" Caption="Sales"
FieldName="[Measures].[Internet Sales Amount]">
</dx:PivotGridField>
</Fields>
</dx:ASPxPivotGrid>
</div>
</form>
</body>
</html>
using System;
using System.Web.UI;
using DevExpress.XtraPivotGrid;
namespace ASPxPivotGrid_OLAPSortBySummary {
public partial class _Default : Page {
protected override void OnInit(EventArgs e) {
base.OnInit(e);
ASPxPivotGrid1.OLAPConnectionString = "provider=MSOLAP;" +
"data source=https://demos.devexpress.com/Services/OLAP/msmdpump.dll;" +
"initial catalog='Adventure Works DW Standard Edition';cube name='Adventure Works'";
}
protected void ASPxPivotGrid1_Load(object sender, EventArgs e) {
if (IsCallback || IsPostBack) return;
// Expands the Australia column to be able to retrieve OLAP members
// that correspond to the nested columns.
ASPxPivotGrid1.ExpandValue(true, new object[] { "Australia" });
// Obtains OLAP members corresponding to the Australia and Bendigo values.
IOLAPMember countryMember = ASPxPivotGrid1.GetFieldValueOLAPMember(fieldCountry, 0);
IOLAPMember cityMember = ASPxPivotGrid1.GetFieldValueOLAPMember(fieldCity, 0);
// Exits if the OLAP members were not obtained successfully.
if (countryMember == null || cityMember == null)
return;
// Specifies a data field whose summary values should be used to sort values
// of the Month field.
fieldMonth.SortBySummaryInfo.Field = fieldSales;
// Specifies a column by which the Month field values should be sorted.
fieldMonth.SortBySummaryInfo.Conditions.Clear();
fieldMonth.SortBySummaryInfo.Conditions.Add(
new PivotGridFieldSortCondition(fieldCountry, "Australia", countryMember.UniqueName));
fieldMonth.SortBySummaryInfo.Conditions.Add(
new PivotGridFieldSortCondition(fieldCity, "Bendigo", cityMember.UniqueName));
}
}
}
<%@ Page Language="vb" AutoEventWireup="true" CodeBehind="Default.aspx.vb"
Inherits="ASPxPivotGrid_OLAPSortBySummary._Default" %>
<%@ Register Assembly="DevExpress.Web.ASPxPivotGrid.v14.1, Version=14.1.7.0,
Culture=neutral, PublicKeyToken=b88d1754d700e49a"
Namespace="DevExpress.Web.ASPxPivotGrid"
TagPrefix="dx" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dx:ASPxPivotGrid ID="ASPxPivotGrid1" runat="server" DataSourceID="AccessDataSource1"
OnLoad="ASPxPivotGrid1_Load">
<Fields>
<dx:PivotGridField ID="fieldMonth" Area="RowArea" AreaIndex="0"
Caption="Month" FieldName="[Date].[Month of Year].[Month of Year]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldCountry" Area="ColumnArea" AreaIndex="0" Caption="Country"
FieldName="[Customer].[Country].[Country]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldCity" Area="ColumnArea" AreaIndex="1" Caption="City"
FieldName="[Customer].[City].[City]">
</dx:PivotGridField>
<dx:PivotGridField ID="fieldSales" Area="DataArea" AreaIndex="0" Caption="Sales"
FieldName="[Measures].[Internet Sales Amount]">
</dx:PivotGridField>
</Fields>
</dx:ASPxPivotGrid>
</div>
</form>
</body>
</html>
Imports System
Imports System.Web.UI
Imports DevExpress.XtraPivotGrid
Namespace ASPxPivotGrid_OLAPSortBySummary
Partial Public Class _Default
Inherits Page
Protected Overrides Sub OnInit(ByVal e As EventArgs)
MyBase.OnInit(e)
ASPxPivotGrid1.OLAPConnectionString = "provider=MSOLAP;" &
"data source=https://demos.devexpress.com/Services/OLAP/msmdpump.dll;" &
"initial catalog='Adventure Works DW Standard Edition';" &
"cube name='Adventure Works'"
End Sub
Protected Sub ASPxPivotGrid1_Load(ByVal sender As Object, ByVal e As EventArgs)
If IsCallback OrElse IsPostBack Then
Return
End If
' Expands the Australia column to be able to retrieve OLAP members
' that correspond to the nested columns.
ASPxPivotGrid1.ExpandValue(True, New Object() { "Australia" })
' Obtains OLAP members corresponding to the Australia and Bendigo values.
Dim countryMember As IOLAPMember = ASPxPivotGrid1.GetFieldValueOLAPMember(fieldCountry, 0)
Dim cityMember As IOLAPMember = ASPxPivotGrid1.GetFieldValueOLAPMember(fieldCity, 0)
' Exits if the OLAP members were not obtained successfully.
If countryMember Is Nothing OrElse cityMember Is Nothing Then
Return
End If
' Specifies a data field whose summary values should be used to sort values
' of the Month field.
fieldMonth.SortBySummaryInfo.Field = fieldSales
' Specifies a column by which the Month field values should be sorted.
fieldMonth.SortBySummaryInfo.Conditions.Clear()
fieldMonth.SortBySummaryInfo.Conditions.Add(New PivotGridFieldSortCondition(fieldCountry, _
"Australia", countryMember.UniqueName))
fieldMonth.SortBySummaryInfo.Conditions.Add(New PivotGridFieldSortCondition(fieldCity, _
"Bendigo", cityMember.UniqueName))
End Sub
End Class
End Namespace