Aspose::Words::Settings::Odso::get_DataSource method. Specifies the location of the external data source to be connected to a document to perform the mail merge. The default value is an empty string in C++....Aspose::Words::Settings::Odso::get_DataSource method. Specifies the location of the external data source to be connected to a document to perform the mail merge. The default value is an empty string in C++.