To extend the dataset

Hello,

I am writing an application in C# where I am using HDF file. I want to write
data using dataset.
I have come across a condition where I need to extend the dimensions
of dataset, but the API
for the same is not available in the wrapper provided by the HDF5.

We have the API for the same in C library provided by HDF5 but I don't want
to use marshalling or any other stuff like that
in my application as the performance is the key requirement of my
application.

Can you please help me to achieve this.

Regards,
Santosh