共用方式為

SPField.Sealed property

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取得一個值，指出Microsoft SharePoint Foundation欄位類型 (如Type屬性所指定) 是否可以擔任的父代為衍生的自訂欄位類型。

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

'宣告
Public Property Sealed As Boolean
    Get
    Set
'用途
Dim instance As SPField
Dim value As Boolean

value = instance.Sealed

instance.Sealed = value

public bool Sealed { get; set; }

Property value

Type: System.Boolean
true如果無法衍生的 SharePoint 欄位類型 ； 的上層欄位。否則，請false。

Exceptions

Exception Condition
InvalidOperationException

嘗試將值指派給 SharePoint 內建欄位類型。true/false的這類欄位的值必須保持在其原廠設定。
NotSupportedException

An attempt is made to assign false when the SharePoint field is an external data column. (For more information about external data columns, see Where Can You Show External Data?.)

備註

此屬性是不需是否密封SPField類別或衍生自，任何類別。

請參閱

參照

SPField class

SPField members

Microsoft.SharePoint namespace