Name 

Description 

 

AsBCD 

Represents the field's value as a TBcd value. 

 

AsBoolean 

Represents the field's value as a boolean value. 

 

AsCurrency 

Represents the field's value as a Currency value. 

 

AsDateTime 

Represents the field's value as a TDateTime value. 

 

AsFloat 

Represents the field's value as a double value. 

 

AsInteger 

Represents the field's value as a 32-bit integer. 

 

AsSQLTimeStamp 

Represents the field's value as a TSQLTimeStamp. 

 

AsString 

Represents the field's value as a string (Delphi) or an AnsiString (C++). 

 

AsVariant 

Represents the Value of the field as a Variant. 

 

AsWideString 

This is AsWideString, a member of class TField. 

 

AttributeSet 

Specifies the name of an attribute set in the data dictionary to apply to the field component. 

 

Calculated 

Determines whether the value of the field is calculated by the OnCalcFields event handler of its dataset. 

 

CanModify 

Specifies whether a field can be modified. 

 

CurValue 

Represents the current value of the field component including changes made by other users of the database. 

 

DataSet 

Identifies the dataset to which a field component belongs. 

 

DataSize 

Indicates the amount of memory needed to store a field component's value. 

 

DataType 

Identifies the data type of the field component. 

 

DisplayName 

Represents the name of the field for display purposes. 

 

DisplayText 

Represents the field's value as it is displayed in a data-aware control. 

 

EditMask 

Contains a mask that restricts the data that can be entered into a data field. 

 

EditMaskPtr 

Provides read-only access to the EditMask property. 

 

FieldNo 

Indicates the ordinal position of the field's column in the underlying table or query result. 

 

FullName 

Indicates the field name qualified by the full name of the parent field, if any. 

 

IsIndexField 

Indicates whether a field is an index field. 

 

IsNull 

Indicates whether the field has a value assigned to it. 

 

Lookup 

Determines whether the field is specified as a lookup field. 

 

LookupList 

Indicates a cache of values from the LookupDataSet indexed by a set of values from the KeyFields property. 

 

NewValue 

Represents the current value of the field component including pending cached updates. 

 

Offset 

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 

Represents the original value of the field (as a Variant). 

 

ParentField 

Specifies the TObjectField object from which this field is derived. 

 

Size 

Indicates the size used in the definition of the physical database field for data types that support different sizes. 

 

Text 

Contains the string to display in a data-aware control when the field is in edit mode. 

 

ValidChars 

Specifies the characters that can be included in the text representation of the field's value. 

 

Value 

Represents the data in a field component. 

 

Name 

Description 

 

Alignment 

Determines how the field's data is displayed within a data-aware control. 

 

AutoGenerateValue 

Indicates whether the field values can be generated by the server rather than entered by the user. 

 

ConstraintErrorMessage 

Specifies a customized error message that appears when the user tries to set a value that violates the data constraints of the field. 

 

CustomConstraint 

Specifies an SQL string the enforces any application-specific constraints on the field's value. 

 

DefaultExpression 

Specifies an SQL expression that is assigned to the field if the user does not provide a value. 

 

DisplayLabel 

Contains the text to display in the corresponding column heading of a data grid. 

 

DisplayWidth 

Specifies the number of characters that should be used to display a field's value by a cooperating data-aware control. 

 

FieldKind 

Indicates whether a field represents a column in a dataset, a calculated field, or a lookup field. 

 

FieldName 

Indicates the name of the physical column in the underlying table or query result to which a field component is bound. 

 

HasConstraints 

Indicates whether field values are constrained. 

 

ImportedConstraint 

Represents an SQL clause that enforces constraints stored on the server. 

 

Index 

Specifies the field component's index in the Fields property of the dataset. 

 

KeyFields 

Identifies the field or fields in the dataset that must be matched in a lookup dataset when doing a lookup. 

 

LookupCache 

Determines whether the values of a lookup field are cached or looked up dynamically every time the current record in the dataset changes. 

 

LookupDataSet 

Identifies the dataset used to look up field values. 

 

LookupKeyFields 

Identifies the field or fields in the lookup dataset to match when doing a lookup. 

 

LookupResultField 

Identifies the field from the lookup dataset whose value becomes the Value property of the field component. 

 

Origin 

Indicates the name of the field in its original database table. 

 

ProviderFlags 

Specifies how a provider uses the field value when applying updates. 

 

ReadOnly 

Determines whether the field can be modified. 

 

Required 

Specifies whether a nonblank value for a field is required. 

 

Visible 

Determines whether the field appears in a data grid.