ADO » Collections » FieldsVersion: 2.5The Fields Collection is a collection of all of the Field objects associated with a
specific Record object.The Fields Collection has a wider selection of methods than the various other collections in ADO.
For example, the Append method allows you to add Field objects to the collection and
the Update and CancelUpdate methods give you control over updates.
If you reference by name a Field object that does not exist,
a new Field object with that name will be appended automatically to the Fields Collection.
The Status property for this newly appended Field will be assigned a
FieldStatusEnum value of adFieldPendingInsert.
Further, if allowed by your provider, the Field will be created in the data source the next time
you call the Update method.
There are two special fields which can be referenced in a Record object by using the
FieldEnum constants.
FieldEnum Constants
Constant
Value
Description
adDefaultStream
-1
References the field containing the default stream
adRecordURL
-2
References the field containing the absolute URL
A Recordset object can also have a Fields Collection.
The Fields Collection has two properties and six methods.Properties
- Count
- The Count property returns a long value that is the number of items in the collection.
Methods
- Append
-
Syntax: Fields.Append
Name, Type, DefineSize, Attrib, FieldValueThe Append method is used to add (append) a Field object to the Fields Collection.
- CancelUpdate
- The CancelUpdate method cancels all pending deletions, insertions, or updates
to the Fields Collection for a specific Record object.
- Delete
-
Syntax: Fields.Delete
IndexThe Delete method designates that a specified Field object
is to be deleted from the Fields Collection.
- Refresh
- Although, the Refresh method is used to update objects in a collection,
this method has no effect on the Fields Collection of the Record object. - Resync
- The Resync method is used to refetch the data from the underlying data source and
to update (resynchronize) the values in the OriginalValue, UnderlyingValue, and Value properties
of Field objects that are in the Fields Collection object of a Record object,
or just to update the UnderlyingValue property.
- Update
- The Update method is called to make additions, deletions, and updates to the
Fields Collection of the Record object.
See Also:
