i-net Clear Reports can be accessed by .NET applications using a process bridge. The bridge is a .NET library providing API access to the reporting engine. A Java process with the actual server is spawned during the startup of the bridge. The .NET bridge communicates with the server using inter process communication. More details can be found in the documentation of the SDK.
.NET Viewer Example
The .NET Viewer is an example of how you could render and display reports in your .NET application. Please have a look at the .NET Viewer example in the samples folder which comes included with the source files.