public static async Task Run()
{
Console.WriteLine();
Console.WriteLine("Getting started with Cosmos:");
Console.WriteLine();
#region HelloCosmos
using (var context = new OrderContext())
{
await context.Database.EnsureDeletedAsync();
await context.Database.EnsureCreatedAsync();
context.Add(new Order
{
Id = 1,
ShippingAddress = new StreetAddress {
City = "London", Street = "221 B Baker St"
},
PartitionKey = "1"
});
await context.SaveChangesAsync();
}
using (var context = new OrderContext())
{
var order = await context.Orders.FirstAsync();
Console.WriteLine($"First order will ship to: {order.ShippingAddress.Street}, {order.ShippingAddress.City}");
Console.WriteLine();
}
#endregion
#region PartitionKey
using (var context = new OrderContext())
{
context.Add(new Order
{
Id = 2,
ShippingAddress = new StreetAddress {
City = "New York", Street = "11 Wall Street"
},
PartitionKey = "2"
});
await context.SaveChangesAsync();
}
using (var context = new OrderContext())
{
var order = await context.Orders.Where(p => p.PartitionKey == "2").LastAsync();
Console.Write("Last order will ship to: ");
Console.WriteLine($"{order.ShippingAddress.Street}, {order.ShippingAddress.City}");
Console.WriteLine();
}
#endregion
#region OwnedCollection
var distributor = new Distributor
{
Id = 1,
ShippingCenters = new HashSet <StreetAddress> {
new StreetAddress {
City = "Phoenix", Street = "500 S 48th Street"
},
new StreetAddress {
City = "Anaheim", Street = "5650 Dolly Ave"
}
}
};
using (var context = new OrderContext())
{
context.Add(distributor);
await context.SaveChangesAsync();
}
#endregion
#region ImpliedProperties
using (var context = new OrderContext())
{
var firstDistributor = await context.Distributors.FirstAsync();
Console.WriteLine($"Number of shipping centers: {firstDistributor.ShippingCenters.Count}");
var addressEntry = context.Entry(firstDistributor.ShippingCenters.First());
var addressPKProperties = addressEntry.Metadata.FindPrimaryKey().Properties;
Console.WriteLine($"First shipping center PK: ({addressEntry.Property(addressPKProperties[0].Name).CurrentValue}, {addressEntry.Property(addressPKProperties[1].Name).CurrentValue})");
Console.WriteLine();
}
#endregion
#region Attach
using (var context = new OrderContext())
{
var distributorEntry = context.Add(distributor);
distributorEntry.State = EntityState.Unchanged;
distributor.ShippingCenters.Remove(distributor.ShippingCenters.Last());
await context.SaveChangesAsync();
}
using (var context = new OrderContext())
{
var firstDistributor = await context.Distributors.FirstAsync();
Console.WriteLine($"Number of shipping centers is now: {firstDistributor.ShippingCenters.Count}");
var distributorEntry = context.Entry(firstDistributor);
var idProperty = distributorEntry.Property <string>("__id");
Console.WriteLine($"The distributor 'id' is: {idProperty.CurrentValue}");
}
#endregion
}