Using ANTLR to walk a C# project

Question

I have some ANTLR/C# classes capable of parsing a T-SQL stored procedure, walking its dependencies and identifying the required permissions to execute said stored procedure.

I now need to analyse a couple of relatively large C# .NET projects to identify what stored procedures are called.

It is not enough to just locate ALL stored procedure calls, I need to work from a given method and identify stored procedure calls from that.

We can assume that stored procedures are the only means of invoking SQL.

I suppose ANTLR would assist again, but I am uncertain about a few things

1. Is ANTLR the only approach to walking the chain of method calls?
2. If I use ANTLR where do I find the 'best' C# .g4 grammar files?
3. How would I walk from a method call in one unit to its declaration in another - this is the point on which I am most unsure at the moment

---

To simplify the problem let us suppose that all stored procedure calls take the form

            new SqlCommand()
            {
                Connection = GetConnection(),
                CommandText = "dbo.SomeProcName",
                CommandType = CommandType.StoredProcedure
            };

for my purposes that is almost true.

My Principal concern is 3. above