Disco.Services.DocumentTemplateExpressionExtensions.FilterExpressionMatches C# (CSharp) Method

        public static bool FilterExpressionMatches(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, System.DateTime TimeStamp, DocumentState State)
        {
            if (!string.IsNullOrEmpty(dt.FilterExpression))
            {
                var compiledExpression = dt.FilterExpressionFromCache();
                var evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, State);
                try
                {
                    var er = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
                    if (er is bool)
                    {
                        return (bool)er;
                    }
                    bool erBool;
                    if (bool.TryParse(er.ToString(), out erBool))
                    {
                        return erBool;
                    }
                }
                catch
                {
                    return false;
                }
            }
            return true;
        }