TStringField¶

Field class to handle ansistring fields.

Declaration¶

Source position: db.pas line 504

type

  TStringField = class(TField)
  public
    constructor Create;
    procedure SetFieldType;
    property CodePage: TSystemCodePage; {r}
    property FixedChar: Boolean; {rw}
    property Transliterate: Boolean; {rw}
    property Value: string; {rw}
  published
    property EditMask;
    property Size; {d}
  end;

Inheritance¶

Description¶

TStringField is the class used whenever a dataset has to handle a string field type (data type ftString). This class overrides some of the standard TField methods to handle string data, and introduces some properties that are only pertinent for data fields of string type. It should never be necessary to create an instance of TStringField manually, a field of this class will be instantiated automatically for each string field when a dataset is opened.

Properties¶

Member	Visibility	Description
CodePage read only	public	Codepage of the field string data.
EditMask read only	published	Specify an edit mask for an edit control.
FixedChar	public	Is the string declared with a fixed length ?
Size read only	published	Maximum size of the string.
Transliterate	public	Should the field value be transliterated when reading or writing.
Value	public	Value of the field as a string.

See all Properties

Methods¶

Member	Visibility	Description
Create	public	Create a new instance of the TStringField class.
SetFieldType	public	Set the field type.

See all Methods

Name	Description
TField	Provide access to the contents of a single field in a record.
TWideStringField	Field class for widestring data.
TDataset	Base class for records-based data-access.