SPFieldMultiColumn Class
Represents a multicolumn field type.
Inheritance Hierarchy
System.Object
Microsoft.SharePoint.SPField
Microsoft.SharePoint.SPFieldMultiColumn
Namespace: Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Syntax
<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel := True)> _
<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel := True)> _
Public MustInherit Class SPFieldMultiColumn _
Inherits SPField
Dim instance As SPFieldMultiColumn
[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
public abstract class SPFieldMultiColumn : SPField
Remarks
An SPFieldMulitColumn object emulates a field that contains multiple values. In actuality, the class contains a single string value, in which the values of the various "columns" are separated by special delimiter characters.
In Windows SharePoint Services 3.0, data for SPFieldMultiColumn fields is stored in the content database as a non-sortable SQL data type. For that reason, columns based on the SPFieldMultiColumn field type or on custom field types derived from it are not sortable. You can overcome this lack of direct sortability by using a "related field". See Custom Related Fields.
Notes to Inheritors
In Windows SharePoint Services 3.0, columns based on custom field types do not appear in Datasheet view and are not included when you export a list to a Microsoft Excel spreadsheet.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.