Can't find ExpressionVisitor.VisistMemberAcess

Question

I am following this blog to try to create an IQueryable provider for MSAccess for a project I am working on at the moment.

I got as far as the page I linked to above, but a couple of pieces of code create classes which inherit from ExpressionVisitor and override its VisitMemberAccess method, in this method for example:

protected override Expression VisitMemberAccess(MemberExpression m)
    {
        if (m.Expression != null && m.Expression.NodeType == ExpressionType.Parameter)
        {
            if (this.sb.Length > 0)
            {
                this.sb.Append(", ");
            }
            this.sb.Append(m.Member.Name);
            return Expression.Convert(Expression.Call(this.row, miGetValue, Expression.Constant(iColumn++)), m.Type);
        }
        else
        {
            return base.VisitMemberAccess(m);
        }
    }

The problem is that this does not compile because the VisitMemberAccess method is not available anymore. I have googled this for a while and found a few references to this method, but they all seem to date back to .NET 3.5 (see here for e.g.).

I would like to know what happened to that method? And more importantly what to do instead of overriding VisitMemberAccess.

Answer 1

The equivalent method for the .NET 3.5 framework's ExpressionVisitor.VisitMemberAccess in .NET 4.0 is ExpressionVisitor.VisitMember. I'm not sure why they changed the name of the method.