This class embodies an implementation of an SQL Data Provider using the new Markup Layer Interface MarkupImageDataProvider, permitting multiple annotation or art documents to be associated with a viewable document. It retains and respects all of the configuration parameters of SqlImageDataProvider SqlImageDataProvider, and adds a few new parameters which permit it to store and retrieve documents and annotations from separate tables. Subject to user configuration, the intended schema is such that (DocumentIdentifier) is the primary key of a 2-column table (DocumentIdentifier, ImageData) used to store documents, and (DocumentIdentifier, MarkupLayerRecordID) is a composite key used to store annotations in a 4-column table (DocumentIdentifier, MarkupLayerRecordID, ArtData, MarkupLayerName) where DocumentIdentifier is a foreign key referencing the table used to store documents. An example schema is provided. table Documents ( DocumentID varchar(255) not null primary key, ImageData varbinary(max) not null ); table Annotations ( DocumentID varchar(255) not null, MarkupID varchar(255) not null, ArtData varbinary(MAX) not null, MarkupName varchar(255) null, primary key(DocumentID, MarkupID), foreign key(DocumentID) references Documents );

'Declaration
 
Public Class MarkupSqlImageDataProvider 
   Inherits MarkupImageDataProvider

'Usage
 
Dim instance As MarkupSqlImageDataProvider

public class MarkupSqlImageDataProvider : MarkupImageDataProvider 

public __gc class MarkupSqlImageDataProvider : public MarkupImageDataProvider 

public ref class MarkupSqlImageDataProvider : public MarkupImageDataProvider