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SetDefaultInitFields 方法 (Type, String[])

指定在实例化指定类型的对象时提取的属性。

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 SetDefaultInitFields ( _
    typeObject As Type, _
    ParamArray fields As String() _
)
用法
Dim instance As Server
Dim typeObject As Type
Dim fields As String()

instance.SetDefaultInitFields(typeObject, _
    fields)

public void SetDefaultInitFields(
    Type typeObject,
    params string[] fields
)

public:
void SetDefaultInitFields(
    Type^ typeObject, 
    ... array<String^>^ fields
)

member SetDefaultInitFields : 
        typeObject:Type * 
        fields:string[] -> unit 

public function SetDefaultInitFields(
    typeObject : Type, 
    ... fields : String[]
)

参数

  • fields
    类型：array<System. . :: . .String> [] () [] []
    一个 String 数组值，该值指定在实例化对象时要提取的属性字段。

注释

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.

示例

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)