下面的示例演示如何運(yùn)用DevExpress XtraPivotGrid分割字段值單元格。

在這個例子中，我們運(yùn)用CustomFieldValueCells事件參數(shù)的Split方法來將總計(jì)列標(biāo)題（ Grand Total ）分成兩個單元格： Price 和Count。新創(chuàng)建的單元格的數(shù)量，大小和標(biāo)題都由FieldValueSplitData對象指定。
示例代碼如下：

C#

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Windows.Forms;
using DevExpress.XtraPivotGrid;
using DevExpress.XtraPivotGrid.Data;

namespace XtraPivotGrid_SplittingCells {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
            pivotGridControl1.CustomFieldValueCells +=
                new PivotCustomFieldValueCellsEventHandler(pivotGrid_CustomFieldValueCells);
        }
        void Form1_Load(object sender, EventArgs e) {
            PivotHelper.FillPivot(pivotGridControl1);
            pivotGridControl1.DataSource = PivotHelper.GetDataTable();
            pivotGridControl1.BestFit();
        }
        protected void pivotGrid_CustomFieldValueCells(object sender,
                             PivotCustomFieldValueCellsEventArgs e) {
            if (pivotGridControl1.DataSource == null) return;
            if (radioGroup1.SelectedIndex == 0) return;

            // Creates a predicate that returns true for the Grand Total
            // headers, and false for any other column/row header.
            // Only cells that match this predicate are split.
            Predicate<FieldValueCell> condition =
                new Predicate<FieldValueCell>(delegate(FieldValueCell matchCell) {
                return matchCell.ValueType == PivotGridValueType.GrandTotal &&
                    matchCell.Field == null;
            });

            // Creates a list of cell definitions that represent newly created cells.
            // Two definitions are added to the list. The first one identifies
            // the Price cell, which has two nested cells (the Retail Price and Wholesale Price
            // data field headers). The second one identifies the Count cell with
            // one nested cell (the Quantity data field header).
            List<FieldValueSplitData> cells = new List<FieldValueSplitData>(2);
            cells.Add(new FieldValueSplitData("Price", 2));
            cells.Add(new FieldValueSplitData("Count", 1));

            // Performs splitting.
            e.Split(true, condition, cells);
        }
        void pivotGridControl1_FieldValueDisplayText(object sender, PivotFieldDisplayTextEventArgs e) {
            if(e.Field == pivotGridControl1.Fields[PivotHelper.Month]) {
                e.DisplayText = CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName((int)e.Value);
            }
        }
        void radioGroup1_SelectedIndexChanged(object sender, EventArgs e) {
            this.pivotGridControl1.LayoutChanged();
            pivotGridControl1.BestFit();
        }       
    }
}

VB

Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
Imports System.Globalization
Imports System.Windows.Forms
Imports DevExpress.XtraPivotGrid
Imports DevExpress.XtraPivotGrid.Data

Namespace XtraPivotGrid_SplittingCells
    Partial Public Class Form1
        Inherits Form
        Public Sub New()
            InitializeComponent()
            AddHandler pivotGridControl1.CustomFieldValueCells, _
                AddressOf pivotGrid_CustomFieldValueCells
        End Sub
        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
            PivotHelper.FillPivot(pivotGridControl1)
            pivotGridControl1.DataSource = PivotHelper.GetDataTable()
            pivotGridControl1.BestFit()
        End Sub
        Protected Sub pivotGrid_CustomFieldValueCells(ByVal sender As Object, _
                        ByVal e As PivotCustomFieldValueCellsEventArgs)
            If pivotGridControl1.DataSource Is Nothing Then
                Return
            End If
            If radioGroup1.SelectedIndex = 0 Then
                Return
            End If

            ' Creates a predicate that returns true for the Grand Total
            ' headers, and false for any other column/row header.
            ' Only cells that match this predicate are split.
            Dim condition As New Predicate(Of FieldValueCell)(AddressOf AnonymousMethod1)

            ' Creates a list of cell definitions that represent newly created cells.
            ' Two definitions are added to the list. The first one identifies
            ' the Price cell, which has two nested cells (the Retail Price and Wholesale Price
            ' data field headers). The second one identifies the Count cell with
            ' one nested cell (the Quantity data field header).
            Dim cells As New List(Of FieldValueSplitData)(2)
            cells.Add(New FieldValueSplitData("Price", 2))
            cells.Add(New FieldValueSplitData("Count", 1))

            ' Performs splitting.
            e.Split(True, condition, cells)
        End Sub
       
        Private Function AnonymousMethod1(ByVal matchCell As FieldValueCell) As Boolean
            Return matchCell.ValueType = PivotGridValueType.GrandTotal AndAlso _
                matchCell.Field Is Nothing
        End Function
        Private Sub pivotGridControl1_FieldValueDisplayText(ByVal sender As Object, _
                                    ByVal e As PivotFieldDisplayTextEventArgs) _
                                    Handles pivotGridControl1.FieldValueDisplayText
            If Object.Equals(e.Field, pivotGridControl1.Fields(PivotHelper.Month)) Then
                e.DisplayText = _
                    CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(CInt(Fix(e.Value)))
            End If
        End Sub
        Private Sub radioGroup1_SelectedIndexChanged(ByVal sender As Object, _
                                ByVal e As EventArgs) _
                                Handles radioGroup1.SelectedIndexChanged
            Me.pivotGridControl1.LayoutChanged()
            pivotGridControl1.BestFit()
        End Sub
    End Class
End Namespace

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