C# and ONNX models

Hi, I have created a T5 based ONNX model, I would just like to load it into some C# code to use it.
The main problem is that I can’t tokenize a string into numbers and then vice versa (the model accepts long as input and float32 as output), but I need to input a string and receive one as output, as happens in Python using the transformers library and related tokenizers…
Does anyone have a working example?

Thank you.