Field.FromBaseType 属性
Gets a Boolean value that indicates whether the field derives from a base field type.
命名空间： Microsoft.SharePoint.Client
程序集： Microsoft.SharePoint.Client.Silverlight（位于 Microsoft.SharePoint.Client.Silverlight.dll 中）; Microsoft.SharePoint.Client.Phone（位于 Microsoft.SharePoint.Client.Phone.dll 中） Microsoft.SharePoint.Client（位于 Microsoft.SharePoint.Client.dll 中）
语法
声明
Public ReadOnly Property FromBaseType As Boolean
Get
用法
Dim instance As Field
Dim value As Boolean
value = instance.FromBaseType
public bool FromBaseType { get; }
属性值
类型：System.Boolean
Returns Booleantrue if the field derives from a base field type; otherwise, returns false.
备注
The base field types are defined in FLDTYPES.XML, which defines the default schema for lists. Every built-in list in a site inherits its schema from a base type. If the FromBaseType property returns true, the field cannot be converted to another field type, nor can it be deleted.
提示
If you want to prevent a field from being modified or deleted, set the Sealed property to true.