RAD Studio VCL Reference
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TDBXReaderValue.IsNull Method
TDBXReaderValue Class | TDBXReaderValue Members | DBXCommon Namespace | Description
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Returns true if the value is null.

Pascal
function IsNull: Boolean; override;
C++
virtual __fastcall Boolean IsNull();
Description

Returns true if the value is null. This method should be called before calling any of the Get methods. If the value is null, the Get methods will throw a TDBXError exception if they are called. 

 

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