ShardStrategy.ShardingOn Example - taken from RavenDB.NET docs

ShardExample.cs

//from http://ravendb.net/docs/server/scaling-out/sharding
var shards = new Dictionary<string, IDocumentStore>
                {
                    {"Asia", new DocumentStore {Url = "http://localhost:8080"}},
                    {"Middle East", new DocumentStore {Url = "http://localhost:8081"}},
                    {"America", new DocumentStore {Url = "http://localhost:8082"}},
                };
 
var shardStrategy = new ShardStrategy(shards)
    .ShardingOn<Company>(company => company.Region)
    .ShardingOn<Invoice>(x => x.CompanyId);
 
var documentStore = new ShardedDocumentStore(shardStrategy).Initialize();