var mongo = new Mongo();
mongo.Connect();
// 打開myorders數據庫.
Database db = mongo.GetDatabase( "myorders" );
// 獲取orders 集合.
IMongoCollection orders = db.GetCollection( "orders" );
//插入文檔
   var order = new Document();
   order["OrderAmount"] = 57.22;
   order["CustomerName"] = "Elmer Fudd";
   // Add the new order to the mongo orders colleciton.
   orders.Insert( order );
//插入多個文檔
   // Create new orders.
   var order1 = new Document();
   order1["OrderAmount"] = 100.23;
   order1["CustomerName"] = "Bugs Bunny";
   var order2 = new Document();
   order2["OrderAmount"] = 0.01;
   order2["CustomerName"] = "Daffy Duck";
   IEnumerable< Document > orderList = new List< Document > {order1, order2};
   // Insert an IEnumerable.
   orders.Insert( orderList );
//更新
   var selector = new Document {{"CustomerName", "Daffy Duck"}};
   Document docToUpdate = orders.FindOne( selector );
   Console.WriteLine( "Before Update: " + docToUpdate );
   // I'm in the money!
   docToUpdate["OrderAmount"] = 1000000.00;
   // Update Daffy's account before Hasaan finds him.
   orders.Update( docToUpdate );
//查找
   // Create a specification to query the orders collection.
   var spec = new Document();
   spec["CustomerName"] = "Elmer Fudd";
   // Run the query.
   Document result = orders.FindOne( spec )
//linq 查找
   // Query the orders collection.
   IQueryable<Document> results =
     from doc in orders.AsQueryable()
     where doc.Key("CustomerName") == "Elmer Fudd"
     select doc;
   Document result = results.FirstOrDefault();
//刪除
   // Delete documents matching a criteria.
   orders.Delete( new Document {{"CustomerName", "Elmer Fudd"}} );
   Console.WriteLine( string.Format( "Document Count After Deleting Elmer Fudd: [ {0} ]", orders.Count() ) );

   // Delete all docs.
   orders.Delete( new Document() );