An application does not create an instance of the IColumnMapping interface directly, but creates an instance of a class that inherits IColumnMapping.
Classes that inherit IColumnMapping must implement all inherited members, and typically define additional members to add provider-specific functionality. For example, the IColumnMapping interface defines the DataSetColumn property. In turn, the DataColumnMapping class inherits this property, and also defines the GetDataColumnBySchemaAction method.
Notes to Implementers:
When you inherit from the IColumnMapping interface, you should implement the following constructors:
Initializes a new instance of the ColumnMapping class.
The following example creates an instance of the derived class, DataColumnMapping, and adds it to a DataColumnMappingCollection collection. It then tells the user that the mapping was added to the collection and shows the parent for the mapping.