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I want to pass my query from Business Layer to Service Layer but when doing this i have to convert my DTO to Entity model. Normally i can convert Type1 to Type2 via Autommaper but now i want to map Expression<Func<Type1,bool>> to Expression<Func<Type2, bool>> I got error from Automapper Missing type map configuration or unsupported mapping. Mapping types: Expression`1 -> Expression`1 How can i achieve this? luksan I just updated my answer to the another question you commented on, which I think addresses this: AutoMapper for Func's between selector types As for the error you posted above, that

I have written a class called QueueManager: class QueueManager { Queue functionsQueue; public bool IsEmpty { get { if (functionsQueue.Count == 0) return true; else return false; } } public QueueManager() { functionsQueue = new Queue(); } public bool Contains(Action action) { if (functionsQueue.Contains(action)) return true; else return false; } public Action Pop() { return functionsQueue.Dequeue() as Action; } public void Add(Action function) { functionsQueue.Enqueue(function); } public void Add(Func<CacheObject,Boolean> function) { functionsQueue.Enqueue(function); } and when I create an

I didn't know how to express it clearly. I have this interface: interface IConverter { Dictionary<Type, Func<string, object>> ConversionMethods { get; } } Basically, it defines a contract saying that a class implementing it should provide conversion methods for all the custom types it uses (be them enums or anything). Is it possible to replace object in Func 's generic types with its corresponding dictionary key's type (so it is impossible to have two unmatching types)? I think it's not possible, but the alternatives are a bit annoying (using dynamic or object , creating a specialized

My method receives all DataTables parameters to sort table by column clicked. I call this method from controller of each page list. I'm looking for a better way to do this like a generic method for all types: string , int , decimal , double , bool ( nullable or not ). But I can't find it. My current code: public List<T> OrderingList<T>(List<T> list, DataTablesParam model) { var iColumn = model.Order.FirstOrDefault().Column; var property = typeof(T).GetProperty(model.Columns.ToArray()[iColumn].Data); var param = Expression.Parameter(typeof(T)); var final = Expression.Property(param, property);

If I have a class Product: public class Product { public string Title { get; set; } public string Make { get; set; } public Decimal Price { get; set; } //(Edit) - Added non-string } And I have a property in another class declared as: Func<Product, object> SortBy { get; set; } I can set SortBy using: SortBy = p => p.Title; But how would I, using reflection, make the same assignment if I had the property name for SortBy stored as a string e.g. string sortField = "Title"; SortBy = /*Some reflection using sortField*/; You need to use expression trees to create a new method at runtime: var p =

I have a small dependency injection framework, and I am trying to make it resolve Lazy<> instances dynamically. The idea is to do something like that: DIContainer.Register<IDbCommand,SqlCommand>(); var lazyCommand = DIContainer.Resolve<Lazy<IDbCommand>>(); I read the other day that Autofac was able of doing that. I am stuck trying to set the constructor for that Lazy<> instance. In the next test code, a exception is thrown because the desired type constructor is expecting a Func<arg> , but I am passing a Func<Object> : static readonly Type _lazyType = typeof(Lazy<>); static Object ResolveTest

I'm trying to build a query that will execute against the database as an IQueryable, and not in memory (IEnumerable). The query will be used for several different purposes and each purpose has a slightly different way in which the Total property is calculated. Because I'm using a Func for calculating the total, i get an error advising me that sql doesn't know how to deal with the Invoke method of my Func, which is understandable. To get past the problem, i have had to list the groupings into memor by calling ToList() which is not good for performance. Is there a way that i can execute this