Entity Framework Graph Diff - Knowledge Base (KB)
31 results
Exception in Expression Trees
This is my model:... - Business - BusinesType - FK - Categories (*) - FK - Branch (*) - BranchType - FK - Address - Phone (*) - CustomFields (*) - OpeningTimes (*) - WorkingPeriods (*) - ..... ...Now I have a co...
asked by Shimmy
Disconnected Complex Graph With Disconnected Child Entities
I have a complex graph with a collection child entities.The relationship between parent and child entities is one-many relationship and has an Independent association. I know that I cant persist my graph without manual synchronization which I want to avoi...
asked by Mady
How to update an expression tree with GraphDiff
The object graph I'm working with is basically:...public class Resource { public string Forename { get; set; } public string Surname { get; set; } public int EmployeeNumber { get; set; } public ICollection<Skill> Skills...
asked by DaveF
Update Many-to-Many Association with GraphDiff
I have the following data model:...My business logic works with detached entities so I'm using GraphDiff to perform updates. I'm having trouble updating the PerfModes/CalcPoints association. Conceptually, Block owns CalcPoints and PerfModes, but CalcPoint...
asked by Matt
Casting an expression to another one
I have following expression...Expression<Func<T, object>> expr1;...Is there any way to cast it to ...Expression<Func<IUpdateConfiguration<T>, object>>...?...[Update]...Or create a new ...Expression<Func<IUpdateConfiguration<T>, object>>... from the existi...
asked by Masoud
Update entity graph Ids with Db generated Ids in Disconnected environment(EF)
I'm working with ...EF6 code first... in a ...WinForm... project. I used following method for reading entities from ...Db..., updating them and then save back them to ...Db...:...Read Entity graph using ...Linq to entities...(after reading the ...DbContex...
asked by Masoud
How do you perform service-oriented parent-child transactions?
Example:...A SalesOrder is composed of a SalesOrderHeader and one or more SalesOrderItems. When editing an existing SalesOrder, the SalesOrderHeader can be modified and SalesOrderItems can be added, modified and deleted. All changes must be saved in a sin...
asked by BahKoo
GraphDiff and EF6.1 – Recursive Many-to-Many Relationship
I am having an issue with GraphDiff attaching an object which has a recursive many-to-many relationship. I am using GraphDiff 2.0.1 and Entity Framework 6.1.1....The progam manages Recipes which can have 0-n RecipeLines which contains a link to another Re...
asked by Croberts
Updating a many-to-many relation using GraphDiff cause an error
I'm using ...EF code first 6.1... with ....NET 4... in my application and have following classes in my model(I cut other unrelated parts of diagram. e.g ...Permission... has other navigations): ...My business logic works with detached entities so I'm usin...
asked by Masoud
How do I combine two expression tree bodies?
If I have:...m => m.OwnedCollection(p => p.Addresses) ...and...m => m.OwnedCollection(p => p.Contacts) ...I'd like to combine them to be:...m => m.OwnedCollection(p => p.Addresses).OwnedCollection(p => p.Contacts) ...Is there a way of doing this?...I'd al...
asked by user2363071
Graphdiff is removing entities
I have the following entities: ...public class Profile { [Required] public string Name { get; set; } [Required] public string Description { get; set; } [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)] public int ID { g...
asked by Cesar
Using GraphDiff on three tables
I have three tables...ShippingZone ShippingZoneID -> PK ZoneShippingMethod: ZoneShippingMethodID -> PK ShippingZoneID -> FK ZoneShippingMethodRange ZoneShippingMethodID -> FK ...The context:...public ShippingZonesContext() : ...
asked by Codehelp
UpdateGraph with self referencing entity
I'm using ...GraphDiff... with EF to update state of disconnected objects acquired from a REST Service....It's working rather well from now but I got a problem with self referencing entities....Entities :...public class Foo { [Key] public int Id {...
asked by Florian F.
Setting association to foreign key to inherited object using graphdiff and Entity Framework
I have a issue with updating value on a foreign key which is inheriting from another class. I am working with detached object in Entity Framework, so I'm using graphdiff to handle it....I've simplified the code to make it easier to read...Project class:..
asked by Arne H. Bitubekk
Updating data in two related tables using GraphDiff
I have two tables, Order and OrderItems...The Order table has a OrderId column that's the primary key The OrderItems also has this column as foriegn key....For a given Order, if the OrderId is 1 and it has two items the OrderItems table will have two rows...
asked by Codehelp
Optimize GraphDiff performance on first update (subsequent updates are quick)
I am working on a project with a very complex entity. The object graph contains approximately 30 objects in a tree with two levels (there are children of children)....The entity is managed in a browser, and sent as Json to a Web API endpoint. The endpoint...
asked by Tibor Molnar
Empty rows insertion in Many-to-One and Many-to-Many relationships in GraphDiff
I am using GraphDiff, along with the latest version of the Entity Framework, following the code-first approach....I am trying to update a ...Food... entity this way:...public void Update(Food food) { using (var db = new DatabaseMappingContext()) {...
asked by Nick Louloudakis
Inserting entity doesn't update Key field
I'm trying to insert a detached entity into database using GraphDiff....It goes something like :...public IHttpActionResult Post([FromBody] Foo foo) { var newFoo = fooBusiness.AddObject(foo); if (newFoo != null) { return CreatedAtRoute("Ge...
asked by Florian F.
Can GraphDiff be used for partial updates of simple entities too?
I have a WebApi2 project with EF6 CodeFirst. I'm also using AutoMapper to map between my models and dto's. I'm not using OData. ...I'm trying to find a solution to handle updates of entities. As I'm not using OData I can't use Delta and I would not like t...
asked by Ivan-Mark Debono
Should foreign Id properties be mapped from Model to Dto?
If I have the following model:...public class Customer { public int Id {get; set;} public int CustomerTypeId {get; set;} public virtual CustomerType {get; set;} } ...Should the Dto exclude foreign Id's to look like this:...public class Custome...
asked by Ivan-Mark Debono
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