Interface IDataGroupMember

Provides an unified access to the data of a group member

Inherited Members
Namespace: Telerik.Reporting.Processing
Assembly: Telerik.Reporting.dll

Syntax

public interface IDataGroupMember : IDataObject

Methods

EnumerateRawData()

Enumerates all data items (details) that belongs to the current group member.

Declaration
IEnumerable EnumerateRawData()
Returns
System.Collections.IEnumerable

A set of raw data items that belongs to the current group member.
Examples

The following example, uses the IDataGroupMember.EnumerateRawData() to display the detail items for each member of the Country group.

public class Address
{
    string country;
    string city;

    public string City
    {
        get { return this.city; }
        set { this.city = value; }
    }

    public string Country
    {
        get { return this.country; }
        set { this.country = value; }
    }

    public Address(string country, string city)
    {
        this.country = country;
        this.city = city;
    }
}

public class Report1 : Telerik.Reporting.Report
{
    public Report1()
    {
        this.InitializeComponent();

        this.DataSource = new Address[]
                               {
                                   new Address("UK", "London"),
                                   new Address("USA", "Boston"),
                                   new Address("UK", "Manchester"),
                                   new Address("UK", "Liverpool"),
                                   new Address("USA", "New York"),
                                   new Address("USA", "Houston"),
                                };
    }

    private void InitializeComponent()
    {
        ((System.ComponentModel.ISupportInitialize)this).BeginInit();

        this.detailSection = new Telerik.Reporting.DetailSection();
        this.groupHeaderSection = new Telerik.Reporting.GroupHeaderSection();
        this.groupFooterSection = new Telerik.Reporting.GroupFooterSection();

        this.groupHeaderSection.ItemDataBound += new System.EventHandler(groupHeaderSection_ItemDataBound);

        this.groupFooterSection.ItemDataBound += new System.EventHandler(groupFooterSection_ItemDataBound);

        this.Items.AddRange(new Telerik.Reporting.ReportItemBase[]
                                {
                                    this.groupHeaderSection,
                                    this.detailSection,
                                    this.groupFooterSection,
                                });

        Telerik.Reporting.Group group1 = new Telerik.Reporting.Group();
        group1.Name = "Country";
        group1.GroupHeader = this.groupHeaderSection;
        group1.GroupFooter = this.groupFooterSection;
        group1.Groupings.AddRange(new Telerik.Reporting.Grouping[] { new Telerik.Reporting.Grouping("=Fields.Country"), });

        this.Groups.AddRange(new Telerik.Reporting.Group[] { group1 });

        ((System.ComponentModel.ISupportInitialize)this).EndInit();
    }

    void groupHeaderSection_ItemDataBound(object sender, System.EventArgs e)
    {
        Telerik.Reporting.Processing.GroupSection groupSection = sender as Telerik.Reporting.Processing.GroupSection;
        Telerik.Reporting.Processing.IDataGroupMember dataGroupMember = groupSection.DataObject as Telerik.Reporting.Processing.IDataGroupMember;

        Console.WriteLine("--- Begin '{0}' ---", groupSection.DataObject["Country"]);
        Console.WriteLine("(header)");
        EnumerateGroupMemberRawData(dataGroupMember);
    }

    void groupFooterSection_ItemDataBound(object sender, System.EventArgs e)
    {
        Telerik.Reporting.Processing.GroupSection groupSection = sender as Telerik.Reporting.Processing.GroupSection;
        Telerik.Reporting.Processing.IDataGroupMember dataGroupMember = groupSection.DataObject as Telerik.Reporting.Processing.IDataGroupMember;

        Console.WriteLine("(footer)");
        EnumerateGroupMemberRawData(dataGroupMember);
        Console.WriteLine("--- End '{0}'  ---", groupSection.DataObject["Country"]);
    }

    static void EnumerateGroupMemberRawData(Telerik.Reporting.Processing.IDataGroupMember dataGroupMember)
    {
        foreach (Address address in dataGroupMember.EnumerateRawData())
        {
            Console.WriteLine(string.Format("  {0} - {1}", address.Country, address.City));
        }
    }

    Telerik.Reporting.DetailSection detailSection;
    Telerik.Reporting.GroupHeaderSection groupHeaderSection;
    Telerik.Reporting.GroupFooterSection groupFooterSection;
}

Public Class Address

    Public Sub New(ByVal country As String, ByVal city As String)
        _country = country
        _city = city
    End Sub

    Public Property City() As String
        Get
            Return _city
        End Get
        Set(ByVal value As String)
            _city = value
        End Set
    End Property

    Public Property Country() As String
        Get
            Return _country
        End Get
        Set(ByVal value As String)
            _country = value
        End Set
    End Property

    Private _city As String
    Private _country As String
End Class

Public Class Report1
    Inherits Report

    Public Sub New()
        Me.InitializeComponent()
        MyBase.DataSource = New Address() {New Address("UK", "London"), _
                                           New Address("USA", "Boston"), _
                                           New Address("UK", "Manchester"), _
                                           New Address("UK", "Liverpool"), _
                                           New Address("USA", "New York"), _
                                           New Address("USA", "Houston")}
    End Sub

    Private Shared Sub EnumerateRawData(ByVal dataGroupMember As Telerik.Reporting.Processing.IDataGroupMember)
        Dim address As Address
        For Each address In dataGroupMember.EnumerateRawData
            Console.WriteLine(String.Format("  {0} - {1}", address.Country, address.City))
        Next
    End Sub

    Private Sub groupFooterSection_ItemDataBound(ByVal sender As Object, ByVal e As EventArgs)
        Dim groupSection As Telerik.Reporting.Processing.GroupSection = TryCast(sender, Telerik.Reporting.Processing.GroupSection)
        Dim dataGroupMember As Telerik.Reporting.Processing.IDataGroupMember = TryCast(groupSection.DataObject, Telerik.Reporting.Processing.IDataGroupMember)
        Console.WriteLine("(footer)")
        Report1.EnumerateRawData(dataGroupMember)
        Console.WriteLine("--- End '{0}'  ---", groupSection.DataObject.Item("Country"))
    End Sub

    Private Sub groupHeaderSection_ItemDataBound(ByVal sender As Object, ByVal e As EventArgs)
        Dim groupSection As Telerik.Reporting.Processing.GroupSection = TryCast(sender, Telerik.Reporting.Processing.GroupSection)
        Dim dataGroupMember As Telerik.Reporting.Processing.IDataGroupMember = TryCast(groupSection.DataObject, Telerik.Reporting.Processing.IDataGroupMember)
        Console.WriteLine("--- Begin '{0}' ---", groupSection.DataObject.Item("Country"))
        Console.WriteLine("(header)")
        Report1.EnumerateRawData(dataGroupMember)
    End Sub

    Private Sub InitializeComponent()
        DirectCast(Me, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.detailSection = New DetailSection
        Me.groupHeaderSection = New GroupHeaderSection
        Me.groupFooterSection = New GroupFooterSection
        AddHandler Me.groupHeaderSection.ItemDataBound, New EventHandler(AddressOf Me.groupHeaderSection_ItemDataBound)
        AddHandler Me.groupFooterSection.ItemDataBound, New EventHandler(AddressOf Me.groupFooterSection_ItemDataBound)
        MyBase.Items.AddRange(New ReportItemBase() {Me.groupHeaderSection, Me.detailSection, Me.groupFooterSection})
        Dim group1 As New Group
        group1.Name = "Country"
        group1.GroupHeader = Me.groupHeaderSection
        group1.GroupFooter = Me.groupFooterSection
        group1.Groupings.AddRange(New Telerik.Reporting.Grouping() {New Telerik.Reporting.Grouping("=Fields.Country")})
        MyBase.Groups.AddRange(New Group() {group1})
        DirectCast(Me, System.ComponentModel.ISupportInitialize).EndInit()
    End Sub

    Private detailSection As DetailSection
    Private groupFooterSection As GroupFooterSection
    Private groupHeaderSection As GroupHeaderSection
End Class