OPC Data Client comes with large number of examples, in multiple programming languages and tools.
Some of these examples are installed with the product, and some are included in the documentation. There is also a huge overlap - many (but not all) examples appear both in the product, and are also listed in the documentation. Examples that were written for the documentation are typically somewhat shorter pieces of code, to illustrate a specific point, and are included in the product installation for convenience. Larger standalone examples ship primarily with the product, but pieces of them has been included in the documentation for easier understanding.
Additional examples can be found in the Knowledge Base.
We are continuously adding new examples, and extending our coverage of programming languages tools. If you think that an example is missing, let us know and we will try to add it.