Freigeben über

  • Artikel

SetDefaultInitFields-Methode (Type, Boolean)

Gibt an, dass alle Eigenschaften abgerufen werden, wenn Objekte des angegebenen Typs instanziiert werden.

Namespace:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)

Syntax

'Declaration
Public Sub SetDefaultInitFields ( _
    typeObject As Type, _
    allFields As Boolean _
)
'Usage
Dim instance As Server
Dim typeObject As Type
Dim allFields As Boolean

instance.SetDefaultInitFields(typeObject, _
    allFields)

public void SetDefaultInitFields(
    Type typeObject,
    bool allFields
)

public:
void SetDefaultInitFields(
    Type^ typeObject, 
    bool allFields
)

member SetDefaultInitFields : 
        typeObject:Type * 
        allFields:bool -> unit 

public function SetDefaultInitFields(
    typeObject : Type, 
    allFields : boolean
)

Parameter

  • allFields
    Typ: System. . :: . .Boolean
    Ein Boolean-Wert, der angibt, ob alle Eigenschaften abgerufen werden, wenn Objekte instanziiert werden.
    Wenn der Wert True ist, werden beim Instanziieren von Objekten alle Eigenschaften abgerufen.
    Wenn der Wert False ist, werden alle Objekte auf das Standardverhalten festgelegt.

Hinweise

SMO optimization allows only the minimum properties to be loaded when an object is created. When uninitialized properties are accessed, SMO makes individual requests to load the information from the instance of SQL Server. You can use this method to adjust which properties are initialized for an object when it is first created to further optimize performance.

Beispiele

Visual Basic

'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
'Assign the current default initialization fields for the Table object type to a 
'StringCollection object variable.
Dim sc As StringCollection
sc = srv.GetDefaultInitFields(typ)
'Set the default initialization fields for the Table object type to the CreateDate property.
srv.SetDefaultInitFields(typ, "CreateDate")
'Retrieve the Schema, Name, and CreateDate properties for every table in AdventureWorks2008R2.
'Note that the improvement in performance can be viewed in SQL Profiler.
For Each tb In db.Tables
    Console.WriteLine(tb.Schema + "." + tb.Name + " " + tb.CreateDate)
Next
'Set the default initialization fields for the Table object type back to the original settings.
srv.SetDefaultInitFields(typ, sc)

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()
$sc = $srv.GetDefaultInitFields($typ)
$srv.SetDefaultInitFields($typ, "CreateDate")
foreach ($tb in $db.Tables)
{
   Write-Host $tb.Schema,".",$tb.Name,".",$tb.CreateDate
}
$srv.SetDefaultInitFields($typ, $sc)