Initial commit

vs4win/Chapter10/Ch10Ex02DataSerialization/Program.cs

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+using Microsoft.EntityFrameworkCore; // Include extension method
+using Packt.Shared; // Northwind, Category, Product
+
+WriteLine("Creating four files containing serialized categories and products.");
+
+using (Northwind db = new())
+{
+  // a query to get all categories and their related products 
+  IQueryable<Category>? categories = db.Categories?.Include(c => c.Products);
+
+  if (categories is null)
+  {
+    WriteLine("No categories found.");
+    return;
+  }
+
+  GenerateXmlFile(categories);
+  GenerateXmlFile(categories, useAttributes: false);
+  GenerateCsvFile(categories);
+  GenerateJsonFile(categories);
+
+  WriteLine($"Current directory: {Environment.CurrentDirectory}");
+}