Explore the power of OEC One Link ® and see how it can help you create add-on applications or develop systems that leverage all of our advanced functionality and DMA by viewing our API documentation.

OEC One Link ®

OEC API is a software component intended for development of applications accessing OEC System. Technically, it is a .NET 2.0 assembly (DLL library), which can be accessed from any .NET 2.0 enabled platform and language, such as Microsoft Visual Studio 2005, C#, C++/.NET and VB.NET.

There is also OEC COM API library intended for environments, which could not access .NET directly, but supports Microsoft component object model (COM), such as C++, Delphi, VBA (Excel) etc. OEC COM API is a .NET COM Interop library and requires OEC API presence.

OEC API library encapsulates network communication between client application and OEC Servers and provided object-oriented access to OEC functionality through exposed components (objects), their properties, methods and events.

OEC API is a multi-threaded library and processes user requests asynchronously, but it should be accessed only from creating thread and serializes responses in form of events (callbacks) to the same thread.

Click below to view the complete OEC One Link ® online documentation.

OEC One Link ® Remoting

The ability to share a single API instance among several software applications.

The OEC System does not support multiple connections from the single user (login name). However, some clients use distributed frameworks for separate order and price processing. The OEC API Remote Connection avoids using a secondary login name and downloading the same data twice. Also, it does not require significant changes in the client code - so multiple client applications share the OEC API instance exactly as before.

Click below to view the OEC One Link ® Remoting documentation in PDF format.

One Link Remoting

Compiled API Documentation

Click below to download the complete OEC One Link ® Documentation files in CHM format (Microsoft Compiled HTML Help).

API COM Interface

COM is Microsoft's Component Object Model, another technology available for building applications from binary software components to OEC.

There is also OEC One Link ® COM library intended for environments, which could not access .NET directly, but supports Microsoft component object model (COM), such as C++, Delphi, VBA (Excel) etc. OEC One Link ® COM is a .NET COM Interop library and requires OEC One Link ® presence.

Click below to download the executable file containing the API COM Interface with samples.

API COM Interface No Samples

Click below to download the executable file containing the API COM Interface without samples.