TdxBackendCustomParameter.AllowNull Property

Specifies if an empty field is treated as Null.

Declaration

delphi

property AllowNull: Boolean read; write; default False;

Type	Default	Description
Boolean	False	`False` Default. An empty field is treated as Null.`True`An empty field is treated as an empty string.

Set the AllowNull property to True to interpret empty fields as Null Variant.

The AllowNull property’s default value is False.