Classe DataFile

The DataFile object represents a SQL Server data file.

Hiérarchie d'héritage

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.NamedSmoObject
        Microsoft.SqlServer.Management.Smo.DatabaseFile
          Microsoft.SqlServer.Management.Smo.DataFile

Espace de noms :  Microsoft.SqlServer.Management.Smo
Assembly :  Microsoft.SqlServer.Smo (en Microsoft.SqlServer.Smo.dll)

Syntaxe

'Déclaration
<PhysicalFacetAttribute> _
<SfcElementTypeAttribute("File")> _
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
Public NotInheritable Class DataFile _
    Inherits DatabaseFile _
    Implements ICreatable, ISfcSupportsDesignMode
'Utilisation
Dim instance As DataFile

[PhysicalFacetAttribute]
[SfcElementTypeAttribute("File")]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
public sealed class DataFile : DatabaseFile, 
    ICreatable, ISfcSupportsDesignMode

[PhysicalFacetAttribute]
[SfcElementTypeAttribute(L"File")]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
public ref class DataFile sealed : public DatabaseFile, 
    ICreatable, ISfcSupportsDesignMode

[<SealedAttribute>]
[<PhysicalFacetAttribute>]
[<SfcElementTypeAttribute("File")>]
[<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)>]
type DataFile =  
    class 
        inherit DatabaseFile 
        interface ICreatable 
        interface ISfcSupportsDesignMode 
    end

public final class DataFile extends DatabaseFile implements ICreatable, ISfcSupportsDesignMode

Le type DataFile expose les membres suivants.

Constructeurs

	Nom	Description
	DataFile()	Initializes a new instance of the DataFile class.
	DataFile(FileGroup, String)	Initializes a new instance of the DataFile class on the specified file group with the specified name.
	DataFile(FileGroup, String, String)	Initializes a new instance of the DataFile class on the specified file group with the specified name and file name.

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Propriétés

	Nom	Description
	AvailableSpace	Gets the amount of available space in the data file in KB.
	BytesReadFromDisk	Gets the number of bytes read from disk.
	BytesWrittenToDisk	Gets the number of bytes written to disk.
	FileName	Gets or sets the data file name.
	Growth	Gets or sets the growth increment for the data file in KB or percent.
	GrowthType	Gets or sets the growth type for the data file in kilobytes or percent.
	ID	Gets the ID value that uniquely identifies the data file.
	IsOffline	Gets the Boolean property value that specifies whether the data file is offline or not.
	IsPrimaryFile	Gets the Boolean property value that specifies whether the data file is the primary file of the database.
	IsReadOnly	Gets the Boolean property value that specifies whether the data file is read-only or can be updated.
	IsReadOnlyMedia	Gets the Boolean property value that specifies whether the data file is stored on read-only media.
	IsSparse	Gets the Boolean value that specifies whether the file is a sparse file. Sparse files are used in database snapshots.
	MaxSize	Gets or set the maximum size to which the data file can grow in KB.
	Name	Gets or sets the name of the object. (hérité de NamedSmoObject.)
	NumberOfDiskReads	Gets the number of disk reads.
	NumberOfDiskWrites	Gets the number of disk writes.
	Parent	Gets or sets the FileGroup object that is the parent of the DataFile object.
	Properties	Gets a collection of Property objects that represent the object properties. (hérité de SqlSmoObject.)
	Size	Gets or sets the current size of the data file in KB.
	State	Gets the state of the referenced object. (hérité de SmoObjectBase.)
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (hérité de SqlSmoObject.)
	UsedSpace	Gets the amount of used space in the data file in KB.
	UserData	Gets or sets user-defined data associated with the referenced object. (hérité de SmoObjectBase.)
	VolumeFreeSpace	Gets the volume free space in bytes.

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Méthodes

	Nom	Description
	Alter	Updates any property changes to the object to the instance of Microsoft SQL Server. (hérité de DatabaseFile.)
	Create	Creates a data file on the instance of SQL Server as defined by the DataFile object.
	Discover	Discovers a list of type Object. (hérité de SqlSmoObject.)
	Drop	Drops a database file. (hérité de DatabaseFile.)
	Equals	(hérité de Object.)
	FormatSqlVariant	Formats an object as SqlVariant type. (hérité de SqlSmoObject.)
	GetContextDB	Gets the context database that is associated with this object. (hérité de SqlSmoObject.)
	GetDBName	Gets the database name that is associated with the object. (hérité de SqlSmoObject.)
	GetHashCode	(hérité de Object.)
	GetPropValue	Gets a property value of the SqlSmoObject object. (hérité de SqlSmoObject.)
	GetPropValueOptional	Gets a property value of the SqlSmoObject object. (hérité de SqlSmoObject.)
	GetPropValueOptionalAllowNull	Gets a property value of the SqlSmoObject object. (hérité de SqlSmoObject.)
	GetServerObject	Gets the server of the SqlSmoObject object. (hérité de SqlSmoObject.)
	GetType	(hérité de Object.)
	Initialize()	Initializes the object and forces the properties be loaded. (hérité de SqlSmoObject.)
	Initialize(Boolean)	Initializes the object and forces the properties be loaded. (hérité de SqlSmoObject.)
	IsObjectInitialized	Verifies whether the object has been initialized. (hérité de SqlSmoObject.)
	IsObjectInSpace	Verifies whether the object is isolated or connected to the instance of SQL Server. (hérité de SqlSmoObject.)
	MarkForDrop	Marks the database file to be dropped next time its parent object is altered by the Alter method. (hérité de DatabaseFile.)
	Refresh	Refreshes the object and retrieves properties when the object is next accessed. (hérité de SqlSmoObject.)
	Rename	Renames a database file. (hérité de DatabaseFile.)
	SetOffline	Sets the database file status to offline.
	SetParentImpl	Sets the parent of the SqlSmoObject to the newParent parameter. (hérité de SqlSmoObject.)
	Shrink	Shrinks a database file. (hérité de DatabaseFile.)
	ToString	Returns a String that represents the referenced object. (hérité de SqlSmoObject.)
	Validate	Validates the state of an object. (hérité de SmoObjectBase.)

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Événements

	Nom	Description
	PropertyChanged	Represents the event that occurs when a property is changed. (hérité de SqlSmoObject.)
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. (hérité de SqlSmoObject.)

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Implémentations d'interfaces explicites

	Nom	Description
	IAlienObject.Discover	Discovers any dependencies. Ne faites pas directement référence à ce membre dans votre code. Il prend en charge l'infrastructure SQL Server. (hérité de SqlSmoObject.)
	IAlienObject.GetDomainRoot	Returns the root of the domain. (hérité de SqlSmoObject.)
	IAlienObject.GetParent	Gets the parent of this object. Ne faites pas directement référence à ce membre dans votre code. Il prend en charge l'infrastructure SQL Server. (hérité de SqlSmoObject.)
	IAlienObject.GetPropertyType	Gets the type of the specified property. (hérité de SqlSmoObject.)
	IAlienObject.GetPropertyValue	Gets the value of the specified property. (hérité de SqlSmoObject.)
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. Ne faites pas directement référence à ce membre dans votre code. Il prend en charge l'infrastructure SQL Server. (hérité de SqlSmoObject.)
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (hérité de SqlSmoObject.)
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. (hérité de SqlSmoObject.)
	IAlienObject.SetPropertyValue	Sets the property value. (hérité de SqlSmoObject.)
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. (hérité de SqlSmoObject.)
	ISfcSupportsDesignMode.IsDesignMode	Gets a Boolean value that indicates whether the object supports design mode.

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Notes

To get the DataFile object properties, users can be a member of the public fixed server role.

To set the DataFile object properties, users must have ALTER permission on the database or be a member of the db_owner fixed database role.

To create a data file, users must have ALTER permission on the database or be a member of the db_owner fixed database role.

To drop a data file, users must have ALTER permission on the database or be a member of the db_owner fixed database role.

Thread Safety

Tout membre statique public (Partagé dans Microsoft Visual Basic) de ce type est sûr dans le cadre des opérations à plusieurs threads. Tous les membres de l'instance ne sont pas garantis comme étant thread-safe.

Exemples

Utilisation de fichiers ou de groupes de fichiers pour stocker des données

Sécurité des threads

Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres de l'instance ne sont pas garantis comme étant thread-safe.

Voir aussi

Référence

Espace de noms Microsoft.SqlServer.Management.Smo

Autres ressources

Architecture des fichiers et des groupes de fichiers

CREATE DATABASE (Transact-SQL)