MemberCollection Class

Artikkeli
12/03/2008

Gets a read-only, on-demand collection of Member objects contained by a Position, a Level, or a Tuple.

Namespace: Microsoft.AnalysisServices.AdomdClient
Assembly: Microsoft.AnalysisServices.AdomdClient (in microsoft.analysisservices.adomdclient.dll)

Syntax

'Declaration
<DefaultMemberAttribute("Item")> _
Public NotInheritable Class MemberCollection
    Implements ICollection, IEnumerable

[DefaultMemberAttribute("Item")] 
public sealed class MemberCollection : ICollection, IEnumerable

[DefaultMemberAttribute(L"Item")] 
public ref class MemberCollection sealed : ICollection, IEnumerable

/** @attribute DefaultMemberAttribute("Item") */ 
public final class MemberCollection implements ICollection, IEnumerable

DefaultMemberAttribute("Item") 
public final class MemberCollection implements ICollection, IEnumerable

Remarks

Although the MemberCollection externally represents a collection of Member objects, the collection is internally loaded and managed in one of two ways, depending on the parent of the collection:

If the parent object was referenced as a result of a query, as in the case of a Tuple, the collection represents the members referenced by that query.
If the parent object was referenced as a result of a request for metadata, the collection represents the members referenced by the definition of the parent object.

Inheritance Hierarchy

System.Object
Microsoft.AnalysisServices.AdomdClient.MemberCollection

Example

The following subroutine, given a Level, iterates through the MemberCollection and displays information for each member.

Public Overloads Sub ListMembers(ByRef LevelToCheck As Level)

    ' Check the parameter before performing actions on it.
    If LevelToCheck Is Nothing Then
        Throw New System.ArgumentNullException("LevelToCheck")
    Else
        ' Iterate through the Members collection of the
        ' Level object.

        Try
            Dim memberToCheck As Member

            Debug.WriteLine("Found " & LevelToCheck.GetMembers().Count& _
                " member(s) in level:")

            For Each memberToCheck In LevelToCheck.GetMembers()
                Debug.WriteLine("Member:  " & memberToCheck.Name)
                Debug.WriteLine("  Caption:          " & _
                    memberToCheck.Caption)
                Debug.WriteLine("  UniqueName:       " & _
                    memberToCheck.UniqueName)

                ' Note that the Children property loads a collection
                ' of Member objects on demand and
                ' therefore, slows performance when first
                ' referenced--you should instead use the 
                ' ChildCount property.
                Debug.WriteLine("  No. of children:  " & _
                    memberToCheck.ChildCount)
            Next
        Catch ex As AdomdConnectionException
            ' The connection could not be opened or was disconnected.
            ' This error can occur at any time, if the provider is 
            ' disconnected from the server.
            Debug.WriteLine(ex)
            Throw ex
        Catch ex As AdomdErrorResponseException
            ' A response is received from a provider which indicates an error.
            Debug.WriteLine(ex)
            Throw ex
        Catch ex As AdomdUnknownResponseException
            ' A response has been returned from the provider that 
            ' was not understood.
            Debug.WriteLine(ex)
            Throw ex
        Catch ex As AdomdCacheExpiredException
            ' A cached version of an ADOMD.NET object is no longer valid.
            ' This error is typically raised when reviewing metadata.
            Debug.WriteLine(ex)
            Throw ex
        Catch ex As AdomdException
            ' Any other error raised by ADOMD.NET.
            Debug.WriteLine(ex)
            Throw ex
        Catch ex As Exception
            ' Any other error.
            Debug.WriteLine(ex)
            Throw ex        End Try
    End If
End Sub

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

Target Platforms