Variants.NullStrictConvert
From RAD Studio VCL Reference
C++ Information
From Variants.hpp
bool NullStrictConvert;
Unit: Variants
Type: variable
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. |