Keep Getting 'The LINQ expression node type 'Invoke' is not supported in LINQ to Entities' Exception

Question

I am using C# (including Linq) to develop a web application. I have written a generic method to extend Get method of any entity. However when I get the runtime exception \'T

Answer 1

I beleive the problem is in your And method. You can create the expression yourself using the static Expression methods

public static IEnumerable GetActive(this ICrudService crudService, Expression> where)
        where T : class, IDeletable
    {


    var parameter = where.Parameters.FirstOrDefault();
    var property = Expression.PropertyOrField(parameter, "IsDeleted");
    var notProperty = Expression.Not(property);
    var andExpression = Expression.AndAlso(where.Body, notProperty);

    var lambda = Expression.Lambda>(andExpression, parameter);



    return crudService.Get(lambda);
}