DataFile 类
The DataFile object represents a Microsoft SQL Server data 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..::..DataFile
命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)
语法
声明
<PhysicalFacetAttribute> _
<SfcElementTypeAttribute("File")> _
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
Public NotInheritable Class DataFile _
Inherits DatabaseFile _
Implements ICreatable
用法
Dim instance As DataFile
[PhysicalFacetAttribute]
[SfcElementTypeAttribute("File")]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
public sealed class DataFile : DatabaseFile,
ICreatable
[PhysicalFacetAttribute]
[SfcElementTypeAttribute(L"File")]
[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
public ref class DataFile sealed : public DatabaseFile,
ICreatable
[<SealedAttribute>]
[<PhysicalFacetAttribute>]
[<SfcElementTypeAttribute("File")>]
[<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)>]
type DataFile =
class
inherit DatabaseFile
interface ICreatable
end
public final class DataFile extends DatabaseFile implements ICreatable
DataFile 类型公开以下成员。
构造函数
名称 | 说明 | |
---|---|---|
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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属性
名称 | 说明 | |
---|---|---|
AvailableSpace | Gets the amount of available space in the data file in KB. | |
ExecuteForScalar | Gets or sets the Boolean property value that specifies whether the object is set to the execute for scalar option. (从 SqlSmoObject 继承。) | |
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. | |
IsTouched | Gets the Boolean property value that specifies whether the object properties have been updated but not yet persisted on the server. (从 SqlSmoObject 继承。) | |
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. (从 NamedSmoObject 继承。) | |
ObjectInSpace | Gets the Boolean property value that specifies whether the object exists in isolation, or whether it is directly or indirectly connected to the instance of SQL Server. (从 SqlSmoObject 继承。) | |
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. (从 SqlSmoObject 继承。) | |
ScalarResult | Gets the scalar result for the referenced object. (从 SqlSmoObject 继承。) | |
Size | Gets or sets the current size of the data file in KB. | |
State | Gets the state of the referenced object. (从 SmoObjectBase 继承。) | |
Urn | Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (从 SqlSmoObject 继承。) | |
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. (从 SmoObjectBase 继承。) |
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方法
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显式接口实现
名称 | 说明 | |
---|---|---|
IAlienObjectDiscover | (从 SqlSmoObject 继承。) | |
IAlienObjectGetParent | (从 SqlSmoObject 继承。) | |
IAlienObjectGetProperty | (从 SqlSmoObject 继承。) | |
ISfcPropertyProviderGetPropertySet | (从 SqlSmoObject 继承。) | |
IAlienObjectGetUrn | (从 SqlSmoObject 继承。) | |
IAlienObjectResolve | (从 SqlSmoObject 继承。) | |
IAlienObjectSetProperty | (从 SqlSmoObject 继承。) |
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注释
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
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。 不保证所有实例成员都对于线程安全的。
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。