Possibility to create a constant memory

Hello,

once again for my C# implementations I tried to use the constant memory.
Since there is not constant keyword and no preprocessor I need to create a host memory and copy this memory to a symbol.
The problem here is that I have not symbol, where I can copy the data into.

Is there a method to allocate constant memory and copy the data from the host into the device’ constant memory?

Thank you
Martin