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IProviderSupport2 Interface
IProviderSupport2 Methods | IProviderSupport2 Members | Description | See Also
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Interface datasets use to enable providers to represent them with Unicode support.

Class Hierarchy
Pascal
IProviderSupport2 = interface;
C++
__interface IProviderSupport2;
File

DB

Description

IProviderSupport2 is similar to IProviderSupport but provides Unicode support. 

TWideDataSet uses the IProviderSupport2 interface to interact with its associated dataset. Any dataset that implements the IProviderSupport2 interface can be connected to a client dataset or XML broker via a provider. 

The TWideDataSet class extends TDataSet to support the Unicode string type. TWideDataSet inherits the behavior of TDataSet and TDataSet's IProviderSupport interface, and TWideDataSet supports IProviderSupport2. 

BDE does not support a Unicode type, so TTable and TQuery are derived from TDataSet. However, TADODataSet and TSQLDataSet (dbExpress) derive from TWideDataSet, because ADO and dbExpress need to support Unicode data. 

 

See Also

IProviderSupport 

TADODataSet 

TDataSet 

TSQLDataSet 

TWideDataSet 

Determining the Source of Data

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