Database.PrefetchObjects 方法 (Type)
Prefetches database objects of a specified type.
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 _
)
用法
Dim instance As Database
Dim objectType As Type
instance.PrefetchObjects(objectType)
public void PrefetchObjects(
Type objectType
)
public:
void PrefetchObjects(
Type^ objectType
)
member PrefetchObjects :
objectType:Type -> unit
public function PrefetchObjects(
objectType : Type
)
参数
- objectType
类型：System.Type
A Type object that limits the type of object that is to be prefetched.
注释
This enables collections to 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 default initialization of fields for prefetching database objects.
示例
VB
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
'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("AdventureWorks2012")
$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()
请参阅
参考
Microsoft.SqlServer.Management.Smo 命名空间