LogFile 類別

The LogFile object represents a SQL Server log file.

繼承階層

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.LogFile

命名空間：  Microsoft.SqlServer.Management.Smo
組件：  Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)

語法

'宣告
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
<PhysicalFacetAttribute> _
Public NotInheritable Class LogFile _
    Inherits DatabaseFile _
    Implements ICreatable, ISfcSupportsDesignMode
'用途
Dim instance As LogFile

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
[PhysicalFacetAttribute]
public sealed class LogFile : DatabaseFile, 
    ICreatable, ISfcSupportsDesignMode

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
[PhysicalFacetAttribute]
public ref class LogFile sealed : public DatabaseFile, 
    ICreatable, ISfcSupportsDesignMode

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

public final class LogFile extends DatabaseFile implements ICreatable, ISfcSupportsDesignMode

LogFile 型別公開下列成員。

建構函式

	名稱	說明
	LogFile()	Initializes a new instance of the LogFile class.
	LogFile(Database, String)	Initializes a new instance of the LogFile class for the specified database and that has the specified name.
	LogFile(Database, String, String)	Initializes a new instance of the LogFile class for the specified database and that has the specified name and physical file name.

上層

屬性

	名稱	說明
	BytesReadFromDisk	Gets the number of bytes read from disk.
	BytesWrittenToDisk	Gets the number of bytes written to disk.
	FileName	Gets or sets the file name of the log file.
	Growth	Gets or sets the growth increment for the log file in KB or percent.
	GrowthType	Gets or sets the growth type for the data file in KB or percent.
	ID	Gets the ID value that uniquely identifies the log file.
	IsOffline	Gets the Boolean value that specifies whether the log file is offline or not.
	IsReadOnly	Gets the Boolean value that specifies whether the log file is read-only or can be updated.
	IsReadOnlyMedia	Gets the Boolean value that specifies whether the log 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 file can grow, in MB.
	Name	Gets or sets the name of the object. (繼承自 NamedSmoObject。)
	NumberOfDiskReads	Gets an Int64 value that specifies the number of disk reads.
	NumberOfDiskWrites	Gets an Int64 value that specifies the number of disk writes.
	Parent	Gets or sets the Database object that is the parent of the LogFile object.
	Properties	Gets a collection of Property objects that represent the object properties. (繼承自 SqlSmoObject。)
	Size	Gets or sets the current size of the log file, in KB.
	State	Gets the state of the referenced object. (繼承自 SmoObjectBase。)
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (繼承自 SqlSmoObject。)
	UsedSpace	Gets the amount of used space in the log file in KB.
	UserData	Gets or sets user-defined data associated with the referenced object. (繼承自 SmoObjectBase。)
	VolumeFreeSpace	Gets an Int64 value that specifies the volume free space in bytes.

上層

方法

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

上層

事件

	名稱	說明
	PropertyChanged	Represents the event that occurs when a property is changed. (繼承自 SqlSmoObject。)
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. (繼承自 SqlSmoObject。)

上層

明確 繼承 實作

	名稱	說明
	IAlienObject.Discover	Discovers any dependencies. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.GetDomainRoot	Returns the root of the domain. (繼承自 SqlSmoObject。)
	IAlienObject.GetParent	Gets the parent of this object. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.GetPropertyType	Gets the type of the specified property. (繼承自 SqlSmoObject。)
	IAlienObject.GetPropertyValue	Gets the value of the specified property. (繼承自 SqlSmoObject。)
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (繼承自 SqlSmoObject。)
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. (繼承自 SqlSmoObject。)
	IAlienObject.SetPropertyValue	Sets the property value. (繼承自 SqlSmoObject。)
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. (繼承自 SqlSmoObject。)
	ISfcSupportsDesignMode.IsDesignMode	Gets a Boolean value that specifies whether the object supports design mode.

上層

備註

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

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

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

Thread Safety

此型別的任何公用靜態 (在 Microsoft Visual Basic 為共用) 成員具備多執行緒作業安全。並非所有的執行個體成員都是安全執行緒。

範例

使用檔案群組和檔案來儲存資料

執行緒安全性

這個型別的任何公用 static (在 Visual Basic 中為 Shared) 成員都是執行緒安全的。並不是所有的執行個體成員都保證可以用於所有的執行緒。

請參閱

參考

Microsoft.SqlServer.Management.Smo 命名空間

其他資源

使用檔案群組和檔案來儲存資料