TFields class

Declaration

Inheritance

1. TFields
2. TObject

Description

TFields mimics a TCollection class for the Fields property of TDataset instance. Since TField is a descendent of TComponent, it cannot be an item of a collection, and must be managed by another class.

See also

• TField
• TDataset
• Fields

Properties

ValidFieldKinds	protected
Count	public	Number of fields in the list.
Dataset	public	Dataset the fields belong to.
Fields	public	Indexed access to the fields in the list.

Methods

ClearFieldDefs	protected
Changed	protected
CheckfieldKind	protected
GetCount	protected
GetField	protected
SetField	protected
SetFieldIndex	protected
Create	public	Create a new instance of TFields.
Destroy	public	Free the TFields instance.
Add	public	Add a new field to the list.
CheckFieldName	public	Check field name for duplicate entries.
CheckFieldNames	public	Check a list of field names for duplicate entries.
Clear	public	Clear the list of fields.
FindField	public	Find a field based on its name.
FieldByName	public	Find a field based on its name.
FieldByNumber	public	Search field based on its fieldnumber.
GetEnumerator	public	Return an enumerator for the for..in construct.
GetFieldNames	public	Get the list of fieldnames.
IndexOf	public	Return the index of a field instance.
Remove	public	Remove an instance from the list.

Events

OnChange

protected

Inherited

From TObject (40)

AfterConstruction BeforeDestruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance DefaultHandler DefaultHandlerStr Dispatch DispatchStr Disposed DisposeOf Equals FieldAddress Free FreeInstance GetDisposed GetHashCode GetInterface GetInterfaceByStr GetInterfaceEntry GetInterfaceEntryByStr GetInterfaceTable GetInterfaceWeak GetLastCastErrorInfo InheritsFrom InitInstance InstanceSize MethodAddress MethodName newinstance QualifiedClassName SafeCallException StringMessageTable SystemHasExtendedRTTI ToString UnitName