Switched to sync for consistency. Added clarifying comment. Added limit to reduce time spent processing in-memory. Updates triggered by review

Author: LuceCarter

dotnet/100_aggregation_pipeline_match.ipynb

@@ -217,6 +217,7 @@
    },
    "outputs": [],
    "source": [
+    "// _id is included by default so unlike other fields, you don't need to explicitly include it here.\n",
     "var showTitleAndYear = Builders<Book>.Projection.Include(b => b.Title)\n",
     ".Include(b => b.Year);\n",
     "\n",
@@ -270,7 +271,7 @@
     "    .Match(matchStage)\n",
     "    .Project<Book>(projection);\n",
     "\n",
-    "List<Book> booksFrom2010Projected = await pipeline.ToListAsync();\n",
+    "List<Book> booksFrom2010Projected = pipeline.ToList();\n",
     "\n",
     "if(booksFrom2010Projected != null)\n",
     "{\n",

dotnet/20_project_sort_limit.ipynb

@@ -97,6 +97,7 @@
     "\n",
     "List<Book> sortedBooks = booksCollection.Find(b => true) // Empty filter to find all books\n",
     ".Project<Book>(projection)\n",
+    ".Limit(50)\n",
     ".Sort(descendingPagesSort).ToList();\n",
     "\n",
     "if(sortedBooks != null)\n",
@@ -147,7 +148,7 @@
     "{\n",
     "    foreach(var book in sortedBooksLimitedToTen)\n",
     "    {\n",
-    "    Console.WriteLine($\"Book Title: {book.Title} - Pages: {book.Pages}\");\n",
+    "        Console.WriteLine($\"Book Title: {book.Title} - Pages: {book.Pages}\");\n",
     "    }\n",
     "}\n",
     "else \n",
@@ -191,7 +192,7 @@
     "{\n",
     "    foreach(var book in sortedBooksLimitedToTenSkipFour)\n",
     "    {\n",
-    "    Console.WriteLine($\"Book Title: {book.Title} - Pages: {book.Pages}\");\n",
+    "        Console.WriteLine($\"Book Title: {book.Title} - Pages: {book.Pages}\");\n",
     "    }\n",
     "}\n",
     "else \n",