I'm trying to follow the instructions on Creating an IQueryable LINQ Provider, but when I implement the classes which inherit from ExpressionVisitor as instructed I am told that ExpressionVisitor is inaccessible due to its protection level. Am I missing something incredibly basic?
System.Linq.Expressions.ExpressionVisitor is inaccessible due to its protection level
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The class is sealed, stupidly enough. Use the ExpressionVisitor at the end of this post instead. I can definitely recommend that walk-through, btw, it's really comprehensive and helpful in every way.
Good luck!