Unity Framework Cheat Sheet

**var entity = entityRepository.FindById(entity.Id)**

//Load with properties
**var entity = entityRepository.FindById(entity.Id, x=> x.OtherEntity, t=>t.AnotherEntityCollection);**

//Parameterles.
**entityRepository.FindAll();**

//Get entities which SomeProperty = Predicate
**entity.Repository.FindAll(x=>x.SomeProperty == "Predicate");**

//Get entity and its Child Collection
**entity.Repository.FindAll(x=>x.ChildCollection)**

//Get entities which SomeProperty = Predicate and include Child Collection
**entity.Repository.FindAll(x=>x.SomeProperty= "Predicate" , t=>t.ChildCollection);**

//Entity without a parent
entity = new entity() { ... };
entityRepository.Add(entity);

//Child object that has parent
entity = new entity() { ... , parentId= 3 };
entityRepository.Add(entity);
//OR
//Child Object that has parent
entity = new entity() { ... };
parent = parentRepository.FindyById(parentId);
parent.ChildEntityCollection.Add(entity);

//With Entity Id
**someModelRepository.Remove(entity.Id);**

//With Entity
**someModelRepository.Remove(entity);**

//One-To-One Relation
**parent.Child = null;**

//One-To-Many Relation
**parent.ChildCollection.Remove(Child);**
//OR
**parent.ChildCollection.Clear()**

**try**
**{**
    **using (unitOfWorkFactory.Create())**
    **{**
         //Add, Remove, Modify
    **}**
**}**
**catch (ModelValidationException mvex)**
**{**
    **foreach (var error in mvex.ValidationErrors)**
    **{**
        **ModelState.AddModelError(error.MemberNames.FirstOrDefault() ?? "", error.ErrorMessage);**
    **}**
**}**