DataObjectEnumerator Class

Artikel
02/28/2011

Provides the ability to enumerate data objects.

Inheritance Hierarchy

System.Object
  Microsoft.VisualStudio.Data.ObjectWithSite
    Microsoft.VisualStudio.Data.DataObjectEnumerator
      Microsoft.VisualStudio.Data.AdoDotNet.AdoDotNetObjectEnumerator

Namespace: Microsoft.VisualStudio.Data
Assembly: Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)

Syntax

'Declaration
Public MustInherit Class DataObjectEnumerator _
    Inherits ObjectWithSite

public abstract class DataObjectEnumerator : ObjectWithSite

public ref class DataObjectEnumerator abstract : public ObjectWithSite

[<AbstractClass>]
type DataObjectEnumerator =  
    class
        inherit ObjectWithSite
    end

public abstract class DataObjectEnumerator extends ObjectWithSite

The DataObjectEnumerator type exposes the following members.

Constructors

	Name	Description
	DataObjectEnumerator	Class constructor. Instantiates a new instance of the DataObjectEnumerator class.

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Properties

	Name	Description
	Connection	Retrieves the current data connection.
	Site	Retrieves or sets the object site. (Inherited from ObjectWithSite.)

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Methods

	Name	Description
	EnumerateObjects	Enumerates items for a set of data objects of the specified type with the specified restrictions and sort string, if supported.
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnSiteChanged	Raises the SiteChanged event. (Inherited from ObjectWithSite.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Events

	Name	Description
	SiteChanged	Event that is raised when the Site property is changed. (Inherited from ObjectWithSite.)

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Explicit Interface Implementations

	Name	Description
	IObjectWithSite.GetSite	Retrieves the last site set using the IObjectWithSite.SetSite method. In cases where there is no known site, the object returns an exception. (Inherited from ObjectWithSite.)
	IObjectWithSite.SetSite	Provides the site's pointer to the site object. (Inherited from ObjectWithSite.)

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Remarks

Use this class in cases where a data provider must implement a custom enumeration mechanism, typically when no base enumeration mechanism (such as ADO.NET object enumerator) exists.

Classes derived from DataObjectEnumerator should implement the EnumerateObjects method using the protected Connection property to the level of support expected by the particular implementation. Any client of this class is expected to understand the format of parameters passed to the implementation.

Thread Safety

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

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