How to tell from a CIL instruction whether a field is read or written to?

I am currently using Mono Cecil to extract data from C# projects. Now I need to check whether a field is read or written to in each method.

How can tell from the CIL instruction that a field is being read or written to?

Because I doubt there a library in Mono Cecil similar to Assignment in Eclipse's JDT 开发者_如何学编程that allows me to extract the left hand side and right hand side. If there is, then I can just work from there.

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The instruction for direct field stores is stfld, so you'll have to look out for that.

Note that fields can also be indirectly written to via pointers (both * and & kind), which is impossible to detect in the most general case (as pointer can come from the outside).