Data.DB.TExtendedField Properties

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InheritedProtected

Alignment	published	Determines how the data of the field is displayed within a data-aware control.
AsAnsiString	public	Represents the field's value as an AnsiString.
AsBCD	public	Represents the field's value as a TBcd value.
AsBoolean	public	Represents the field's value as a boolean value.
AsBytes	public	Represents the value of the field as an array of bytes.
AsCurrency	public	Represents the field's value as a Currency value.
AsDateTime	public	Represents the value of the field as a TDateTime value.
AsExtended	public	Represents the field's value as a high-precision floating-point number.
AsFloat	public	Represents the field's value as a double value.
AsGuid	public	Represents the value of the field as a Globally Unique Identifier (GUID).
AsInteger	public	Represents the field's value as a 32-bit integer.
AsLargeInt	public	Represents the field value as a large integer.
AsLongWord	public
AsSingle	public	Represents the field's value as a Single floating-point number.
AsSQLTimeStamp	public	Represents the field's value as a TSQLTimeStamp.
AsSQLTimeStampOffset	public	Represents the field's value as a highly accurate date-time value.
AsString	public	Represents the field's value as a string (Delphi) or an AnsiString (C++).
AsVariant	public	Represents the Value of the field as a Variant.
AsWideString	public	Represents the field's value as a WideString.
AttributeSet	public	Specifies the name of an attribute set in the data dictionary to apply to the field component.
AutoGenerateValue	published	Indicates whether the field values can be generated by the server rather than entered by the user.
Calculated	public	Determines whether the value of the field is calculated by the OnCalcFields event handler of its dataset.
CanModify	public	Specifies whether a field can be modified.
ComObject	public	Specifies the interface reference implemented by the component.
ComponentCount	public	Indicates the number of components owned by the component.
ComponentIndex	public	Indicates the position of the component in its owner's Components property array.
Components	public	Lists all components owned by the component.
ComponentState	public	Describes the current state of the component, indicating when a component needs to avoid certain actions.
ComponentStyle	public	Governs the behavior of the component.
ConstraintErrorMessage	published	Specifies a customized error message that appears when the user tries to set a value that violates the data constraints of the field.
currency	published	Indicates whether the field's value should be represented as a currency value in a string.
CurValue	public	Represents the current value of the field component including changes made by other users of the database.
CustomConstraint	published	Specifies an SQL string the enforces any application-specific constraints on the field's value.
DataSet	public	Identifies the dataset to which a field component belongs.
DataSize	public	Indicates the amount of memory needed to store a field component's value.
DataType	public	Identifies the data type of the field component.
DefaultExpression	published	Specifies an SQL expression that is assigned to the field if the user does not provide a value.
DesignInfo	public	Contains information used by the Form designer.
DisplayFormat	published	Determines how a numeric field's value is formatted for display in a data-aware control.
DisplayLabel	published	Contains the text to display in the corresponding column heading of a data grid.
DisplayName	public	Represents the name of the field for display purposes.
DisplayText	public	Represents the field's value as it is displayed in a data-aware control.
DisplayWidth	published	Specifies the number of characters that should be used to display a field's value by a cooperating data-aware control.
Disposed	protected	Disposed is a read-only property that shows the current state of this object.
EditFormat	published	Determines how a numeric field's value is formatted when it is being edited in a data-aware control.
EditMask	public	Contains a mask that restricts the data that can be entered into a data field.
EditMaskPtr	public	Provides read-only access to the EditMask property.
FieldKind	published	Indicates whether a field represents a column in a dataset, a calculated field, or a lookup field.
FieldName	published	Indicates the name of the physical column in the underlying table or query result to which a field component is bound.
FieldNo	public	Indicates the ordinal position of the field's column in the underlying table or query result.
FullName	public	Indicates the field name qualified by the full name of the parent field, if any.
HasConstraints	published	Indicates whether field values are constrained.
ImportedConstraint	published	Represents an SQL clause that enforces constraints stored on the server.
Index	published	Specifies the field component's index in the Fields property of the dataset.
IsIndexField	public	Indicates whether a field is an index field.
IsNull	public	Indicates whether the field has a value assigned to it.
KeyFields	published	Identifies the field or fields in the dataset that must be matched in a lookup dataset when doing a lookup.
LifeCycle	public	Specifies whether the field is automatic or persistent.
Lookup	public	Determines whether the field is specified as a lookup field.
LookupCache	published	Determines whether the values of a lookup field are cached or looked up dynamically every time the current record in the dataset changes.
LookupDataSet	published	Identifies the dataset used to look up field values.
LookupKeyFields	published	Identifies the field or fields in the lookup dataset to match when doing a lookup.
LookupList	public	Indicates a cache of values from the LookupDataSet indexed by a set of values from the KeyFields property.
LookupResultField	published	Identifies the field from the lookup dataset whose value becomes the Value property of the field component.
MaxValue	published	Sets and gets the upper limit of the field value.
MinValue	published	Sets and gets the lower limit of the field value.
Name	published	Specifies the name of the component as referenced in code.
NewValue	public	Represents the current value of the field component including pending cached updates.
Observers	public	Indicates the TObservers object added to the TComponent.
Offset	public	Indicates the number of bytes added to the end of the current record buffer in the dataset for storing cached values (for calculated fields or BLOB fields).
OldValue	public	Represents the original value of the field (as a Variant).
Origin	published	Indicates the name of the field in its original database table.
Owner	public	Indicates the component that is responsible for streaming and freeing this component.
ParentField	public	Specifies the TObjectField object from which this field is derived.
Precision	published	Sets and gets the display precision of the field value.
ProviderFlags	published	Specifies how a provider uses the field value when applying updates.
ReadOnly	published	Determines whether the field can be modified.
Required	published	Specifies whether a nonblank value for a field is required.
Size	public	Indicates the size used in the definition of the physical database field for data types that support different sizes.
Tag	published	Stores a NativeInt integral value as a part of a component.
Text	public	Contains the string to display in a data-aware control when the field is in edit mode.
Validating	public
ValidChars	public	Specifies the characters that can be included in the text representation of the field's value.
Value	public	Sets and gets the field's floating-point value.
VCLComObject	public	Represents information used internally by components that support COM.
Visible	published	Determines whether the field appears in a data grid.