LogFile 类

The LogFile object represents a SQL Server log file.

继承层次结构

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

命名空间:  Microsoft.SqlServer.Management.Smo
程序集:  Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)

语法

声明
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
<PhysicalFacetAttribute> _
Public NotInheritable Class LogFile _
    Inherits DatabaseFile _
    Implements ICreatable, ISfcSupportsDesignMode
用法
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 类型公开以下成员。

构造函数

  名称 说明
公共方法 LogFile() Initializes a new instance of the LogFile class.
公共方法 LogFile(Database, String) Initializes a new instance of the LogFile class for the specified database and that has the specified name.
公共方法 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.

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属性

  名称 说明
公共属性 BytesReadFromDisk Gets the number of bytes read from disk.
公共属性 BytesWrittenToDisk Gets the number of bytes written to disk.
公共属性 FileName Gets or sets the file name of the log file.
公共属性 Growth Gets or sets the growth increment for the log file in KB or percent.
公共属性 GrowthType Gets or sets the growth type for the data file in KB or percent.
公共属性 ID Gets the ID value that uniquely identifies the log file.
公共属性 IsOffline Gets the Boolean value that specifies whether the log file is offline or not.
公共属性 IsReadOnly Gets the Boolean value that specifies whether the log file is read-only or can be updated.
公共属性 IsReadOnlyMedia Gets the Boolean value that specifies whether the log file is stored on read-only media.
公共属性 IsSparse Gets the Boolean value that specifies whether the file is a sparse file. Sparse files are used in database snapshots.
公共属性 MaxSize Gets or set the maximum size to which the file can grow, in MB.
公共属性 Name Gets or sets the name of the object. (从 NamedSmoObject 继承。)
公共属性 NumberOfDiskReads Gets an Int64 value that specifies the number of disk reads.
公共属性 NumberOfDiskWrites Gets an Int64 value that specifies the number of disk writes.
公共属性 Parent Gets or sets the Database object that is the parent of the LogFile object.
公共属性 Properties Gets a collection of Property objects that represent the object properties. (从 SqlSmoObject 继承。)
公共属性 Size Gets or sets the current size of the log file, in KB.
公共属性 State Gets the state of the referenced object. (从 SmoObjectBase 继承。)
公共属性 Urn Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (从 SqlSmoObject 继承。)
公共属性 UsedSpace Gets the amount of used space in the log file in KB.
公共属性 UserData Gets or sets user-defined data associated with the referenced object. (从 SmoObjectBase 继承。)
公共属性 VolumeFreeSpace Gets an Int64 value that specifies the volume free space in bytes.

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方法

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

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事件

  名称 说明
公共事件 PropertyChanged Represents the event that occurs when a property is changed. (从 SqlSmoObject 继承。)
公共事件 PropertyMetadataChanged Represents the event that occurs when property metadata changes. (从 SqlSmoObject 继承。)

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显式接口实现

  名称 说明
显式接口实现私有方法 IAlienObject.Discover Discovers any dependencies. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.GetDomainRoot Returns the root of the domain. (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.GetParent Gets the parent of this object. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.GetPropertyType Gets the type of the specified property. (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.GetPropertyValue Gets the value of the specified property. (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.GetUrn Gets the Unified Resource Name (URN) of the object. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.Resolve Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.SetObjectState Sets the object state to the specified SfcObjectState value. (从 SqlSmoObject 继承。)
显式接口实现私有方法 IAlienObject.SetPropertyValue Sets the property value. (从 SqlSmoObject 继承。)
显式接口实现私有方法 ISfcPropertyProvider.GetPropertySet Gets the interface reference to the set of properties of this object. (从 SqlSmoObject 继承。)
显式接口实现私有属性 ISfcSupportsDesignMode.IsDesignMode Gets a Boolean value that specifies whether the object supports design mode.

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注释

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

此类型的任何公共静态(Microsoft Visual Basic 中的 Shared)成员在多线程操作中是安全的。但不保证所有实例成员都是线程安全的。

示例

使用文件组和文件存储数据

线程安全

此类型的任何公共 static(在 Visual Basic 中为 Shared) 成员都是线程安全的。不保证所有实例成员都是线程安全的。

请参阅

参考

Microsoft.SqlServer.Management.Smo 命名空间

其他资源

使用文件组和文件存储数据