edmx

Hi everyone and thanks for taking the time to see my question. I'm running VS 2017 with Entity Framework 6 and asp.net MVC and have to add some field to one of my Entities. I added the corresponding fields in the database, but when I open the edmx file nothing shows apart the message "Entity Data Model Designer is unable to open this file." and it proposes me to open it in XML editor, but I have not the "Update model from Database" option when right clicking on the XML file. Is anyone knows what causes this ? I finally came accross my problem. I searched for like 5 hours how to make a new

Is there a way to get a list of tables and relationships from an EDMX using the MetadataLoader? Try this: MetadataWorkspace metadataWorkspace = null; bool allMetadataLoaded = loader.TryLoadAllMetadata(inputFile, out metadataWorkspace); StoreItemCollection itemCollection = (StoreItemCollection)metadataWorkspace.GetItemCollection(DataSpace.SSpace); // Tables foreach (var entity in itemCollection.GetItems<EntityType>()) { ... } // Relations foreach (var association in itemCollection.GetItems<AssociationType>()) { ... } 来源： https://stackoverflow.com/questions/7493299/get-tables-and-relationships

I am creating an OData service with WCF Data Services using an EDMX. How can I create a computed property for an entity type, so that its value gets computed in the service (C#) and does not come from the database? The value of this property is based on the value of other properties, which are mapped to fields in the database. If you are exposing your EDMX file directly, using the default Entity Framework Provider for Data Services, something like this: public class MyService: DataService<MyEntities> { Then unfortunately you can't expose any 'new' properties that aren't in the underlying