项目
04/01/2012

PrefetchObjects 方法 (Type, ScriptingOptions)

使用脚本选项预提取指定类型的数据库对象。

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

语法

声明
Public Sub PrefetchObjects ( _
    objectType As Type, _
    scriptingOptions As ScriptingOptions _
)
用法
Dim instance As Database
Dim objectType As Type
Dim scriptingOptions As ScriptingOptions

instance.PrefetchObjects(objectType, _
    scriptingOptions)

public void PrefetchObjects(
    Type objectType,
    ScriptingOptions scriptingOptions
)

public:
void PrefetchObjects(
    Type^ objectType, 
    ScriptingOptions^ scriptingOptions
)

member PrefetchObjects : 
        objectType:Type * 
        scriptingOptions:ScriptingOptions -> unit

public function PrefetchObjects(
    objectType : Type, 
    scriptingOptions : ScriptingOptions
)

参数

objectType
类型：System. . :: . .Type
一个 Type 对象，该对象限制预提取的对象类型。

scriptingOptions
类型：Microsoft.SqlServer.Management.Smo. . :: . .ScriptingOptions
一个 ScriptingOptions 对象值，该值指定预提取的数据库对象的脚本选项。

注释

This lets collections be fully populated with objects by making one network trip to the instance of SQL Server. Prefetching is an optimization used when the whole collection of objects is required.

This method uses the scripting initialization of fields for prefetching database objects.

示例

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server

'Reference the AdventureWorks2008R2 database.
Dim db As Database
db = srv.Databases("AdventureWorks2008R2")

'Assign the Table object type to a System.Type object variable.
Dim tb As Table
Dim typ As Type
tb = New Table
typ = tb.GetType

'Set scripting options.
Dim so As ScriptingOptions
so = New ScriptingOptions
so.AllowSystemObjects = True

'Prefetch all Table type objects, including system objects.
db.PrefetchObjects(typ, so)

PowerShell

$srv = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2008R2")

$tb = New-Object Microsoft.SqlServer.Management.Smo.Table
$typ = $tb.GetType()

$so = New-Object Microsoft.SqlServer.Management.Smo.ScriptingOptions
$so.AllowSystemObjects = $TRUE

$db.PrefetchObjects($typ, $so)

Write-Host $db.GetTransactionCount()