Added printing all collections on each database

Author: dfreniche

dotnet/01_connect_database.ipynb

@@ -56,7 +56,7 @@
    "id": "03c03c08",
    "metadata": {},
    "source": [
-    "# List all databases in the cluster"
+    "# List all databases and collections in the cluster"
    ]
   },
   {
@@ -77,6 +77,13 @@
     "foreach(var db in dbs)\n",
     "{\n",
     "    Console.WriteLine(db);\n",
+    "    var database = client.GetDatabase(db);  \n",
+    "    var collectionNames = database.ListCollectionNames().ToList();  \n",
+    "\n",
+    "    foreach (var collName in collectionNames)  \n",
+    "    {  \n",
+    "        Console.WriteLine($\"  - {collName}\");  \n",
+    "    }  \n",
     "}"
    ]
   }