System.Variants.NullStrictConvert
Delphi
NullStrictConvert: Boolean = True;
C++
extern DELPHI_PACKAGE bool NullStrictConvert;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| variable | public | System.Variants.pas System.Variants.hpp |
System.Variants | System.Variants |
Description
Specifies whether Null conversion is an error.
NullStrictConvert determines the outcome of attempts to convert Null variants to other types. If NullStrictConvert is true (default), attempting to convert a Null variant raises a EVariantTypeCastError, unless the conversion is to a custom variant that defines a conversion from Null. If NullStrictConvert is false, then conversion from Null follows the following rules:
| Destination | Conversion result |
|---|---|
|
Numeric type |
Zero |
|
String type |
Value of NullAsStringValue global variable. (Default: empty string.) |
|
Boolean |
False. |