// Define a new entity type var customerType = new EntityType("Customer"); // Add properties to the entity type customerType.AddProperty(new EdmProperty("ID", PrimitiveTypeKind.Int32)); customerType.AddProperty(new EdmProperty("Name", PrimitiveTypeKind.String)); customerType.AddProperty(new EdmProperty("Address", PrimitiveTypeKind.String)); customerType.AddProperty(new EdmProperty("Email", PrimitiveTypeKind.String)); // Define relationships with other entity types var ordersType = new EntityType("Order"); var orderLinesType = new EntityType("OrderLine"); var ordersNavigation = new NavigationPropertyInfo(); ordersNavigation.Name = "Orders"; ordersNavigation.TargetMultiplicity = RelationshipMultiplicity.Many; ordersNavigation.Target = ordersType; var orderLinesNavigation = new NavigationPropertyInfo(); orderLinesNavigation.Name = "OrderLines"; orderLinesNavigation.TargetMultiplicity = RelationshipMultiplicity.Many; orderLinesNavigation.Target = orderLinesType; customerType.AddNavigationProperty(ordersNavigation); customerType.AddNavigationProperty(orderLinesNavigation);
// Get an entity type from the model var entityType = context.Model.FindEntityType(typeof(Customer)); // Check if the entity type has properties if (entityType?.Properties.Count > 0) { // Loop through the properties and print their names foreach (var property in entityType.Properties) { Console.WriteLine(property.Name); } }In this example, we retrieve an existing entity type from the Entity Framework context, and check if it has any properties. If it does, we loop through them and print their names to the console. The System.Data.Entity.Core.Metadata.Edm namespace is part of the Entity Framework Core package, which is a part of the Microsoft.EntityFrameworkCore NuGet package library.