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Usage Examples (#51)
* usage examples * DL feedback * make Main async * DL feedback 2 * DL feedback 3 * fix literal include * DL feedback 4 * DL feedback 5 * BD feedback * fix includes * DL feedback 6 * DL feedback 7 * compilation errors * DL feedback 8 Co-authored-by: Mike Woofter <[email protected]>
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‎source/includes/code-examples/delete-many/DeleteMany.cs‎

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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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namespace CSharpExamples.UsageExamples.DeleteMany;
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public class DeleteMany
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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private const string MongoConnectionString = "<Your MongoDB URI>";
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public static void Main(string[] args)
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{
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Setup();
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Borough, "Brooklyn");
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var docs = _restaurantsCollection.Find(filter).ToList();
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// Deleting documents using builders
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Console.WriteLine("Deleting documents...");
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var result = DeleteMultipleRestaurantsBuilder();
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Console.WriteLine($"Deleted documents: {result.DeletedCount}");
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Restore(docs);
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}
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private static DeleteResult DeleteMultipleRestaurantsBuilder()
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{
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// start-delete-many-builders
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Borough, "Brooklyn");
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return _restaurantsCollection.DeleteMany(filter);
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// end-delete-many-builders
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}
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private static void Restore(IEnumerable<Restaurant> docs)
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{
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_restaurantsCollection.InsertMany(docs);
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Console.WriteLine("Resetting sample data...done.");
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}
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private static void Setup()
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{
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// This allows automapping of the camelCase database fields to our models.
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var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
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ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
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// Establish the connection to MongoDB and get the restaurants database
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var mongoClient = new MongoClient(MongoConnectionString);
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var restaurantsDatabase = mongoClient.GetDatabase("sample_restaurants");
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_restaurantsCollection = restaurantsDatabase.GetCollection<Restaurant>("restaurants");
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}
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}

‎source/includes/code-examples/delete-many/DeleteManyAsync.cs‎

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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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namespace CSharpExamples.UsageExamples.DeleteMany;
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public class DeleteManyAsync
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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private const string MongoConnectionString = "<Your MongoDB URI>";
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public static async Task Main(string[] args)
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{
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Setup();
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Borough, "Brooklyn");
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var docs = _restaurantsCollection.Find(filter).ToList();
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// Deleting documents using builders
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Console.WriteLine("Deleting documents...");
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var result = await DeleteMultipleRestaurantsBuilderAsync();
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Console.WriteLine($"Deleted documents: {result.DeletedCount}");
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Restore(docs);
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return result;
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}
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private static async Task<DeleteResult> DeleteMultipleRestaurantsBuilderAsync()
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{
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// start-delete-many-async
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Borough, "Brooklyn");
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return await _restaurantsCollection.DeleteManyAsync(filter);
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// end-delete-many-async
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}
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private static void Restore(IEnumerable<Restaurant> docs)
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{
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_restaurantsCollection.InsertMany(docs);
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Console.WriteLine("Resetting sample data...done.");
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}
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private static void Setup()
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{
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// This allows automapping of the camelCase database fields to our models.
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var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
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ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
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// Establish the connection to MongoDB and get the restaurants database
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var mongoClient = new MongoClient(MongoConnectionString);
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var restaurantsDatabase = mongoClient.GetDatabase("sample_restaurants");
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_restaurantsCollection = restaurantsDatabase.GetCollection<Restaurant>("restaurants");
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}
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}

‎source/includes/code-examples/delete-many/Restaurant.cs‎

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using MongoDB.Bson;
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using MongoDB.Bson.Serialization.Attributes;
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namespace CSharpExamples.UsageExamples.DeleteMany;
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// start-model
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public class Restaurant
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{
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public ObjectId Id { get; set; }
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public string Name { get; set; }
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[BsonElement("restaurant_id")]
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public string RestaurantId { get; set; }
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public string Cuisine { get; set; }
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public object Address { get; set; }
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public string Borough { get; set; }
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public List<object> Grades { get; set; }
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}
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// end-model

‎source/includes/code-examples/delete-one/DeleteOne.cs‎

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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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namespace CSharpExamples.UsageExamples.DeleteOne;
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public class DeleteOne
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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private const string MongoConnectionString = "<Your MongoDB URI>";
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public static void Main(string[] args)
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{
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Setup();
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Name, "Ready Penny Inn");
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var doc = _restaurantsCollection.Find(filter).First();
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// Delete a document using builders
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Console.WriteLine("Deleting a document with builders...");
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var result = DeleteARestaurantBuilder();
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Console.WriteLine($"Deleted documents: {result.DeletedCount}");
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Restore(doc);
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}
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private static DeleteResult DeleteARestaurantBuilder()
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{
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// start-delete-one-builders
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Name, "Ready Penny Inn");
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return _restaurantsCollection.DeleteOne(filter);
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// end-delete-one-builders
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}
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private static void Restore(Restaurant doc)
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{
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_restaurantsCollection.InsertOne(doc);
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}
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private static void Setup()
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{
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// This allows automapping of the camelCase database fields to our models.
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var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
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ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
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// Establish the connection to MongoDB and get the restaurants database
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var mongoClient = new MongoClient(MongoConnectionString);
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var restaurantsDatabase = mongoClient.GetDatabase("sample_restaurants");
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_restaurantsCollection = restaurantsDatabase.GetCollection<Restaurant>("restaurants");
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}
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}

‎source/includes/code-examples/delete-one/DeleteOneAsync.cs‎

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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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namespace CSharpExamples.UsageExamples.DeleteOne;
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public class DeleteOneAsync
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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private const string MongoConnectionString = "<Your MongoDB URI>";
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public static async Task Main(string[] args)
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{
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Setup();
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Name, "Ready Penny Inn");
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var doc = _restaurantsCollection.Find(filter).First();
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// Delete a document using builders
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Console.WriteLine("Deleting a document with builders...");
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var result = await DeleteARestaurantBuilderAsync();
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Console.WriteLine($"Deleted documents: {result.DeletedCount}");
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Restore(doc);
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}
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private static async Task<DeleteResult> DeleteARestaurantBuilderAsync()
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{
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// start-delete-one-builders-async
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var filter = Builders<Restaurant>.Filter
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.Eq(r => r.Name, "Ready Penny Inn");
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return await _restaurantsCollection.DeleteOneAsync(filter);
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// end-delete-one-builders-async
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}
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private static void Restore(Restaurant doc)
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{
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_restaurantsCollection.InsertOne(doc);
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}
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private static void Setup()
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{
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// This allows automapping of the camelCase database fields to our models.
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var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
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ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
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// Establish the connection to MongoDB and get the restaurants database
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var mongoClient = new MongoClient(MongoConnectionString);
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var restaurantsDatabase = mongoClient.GetDatabase("sample_restaurants");
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_restaurantsCollection = restaurantsDatabase.GetCollection<Restaurant>("restaurants");
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}
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}

‎source/includes/code-examples/delete-one/Restaurant.cs‎

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using MongoDB.Bson;
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using MongoDB.Bson.Serialization.Attributes;
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namespace CSharpExamples.UsageExamples.DeleteOne;
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// start-model
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public class Restaurant
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{
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public ObjectId Id { get; set; }
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public string Name { get; set; }
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[BsonElement("restaurant_id")]
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public string RestaurantId { get; set; }
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public string Cuisine { get; set; }
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public object Address { get; set; }
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public string Borough { get; set; }
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public List<object> Grades { get; set; }
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}
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// end-model

‎source/includes/code-examples/find-many/FindMany.cs‎

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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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namespace CSharpExamples.UsageExamples.FindMany;
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public class FindMany
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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private const string MongoConnectionString = "<Your MongoDB URI>";
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public static void Main(string[] args)
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{
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Setup();
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// Find multiple documents using builders
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Console.WriteLine("Finding documents with builders...:");
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var restaurants = FindMultipleRestaurantsBuilderSync();
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Console.WriteLine($"Number of documents found: {restaurants.Count}");
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// Extra space for console readability
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Console.WriteLine();
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// Find multiple documents using LINQ
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Console.WriteLine("Finding documents with LINQ...:");
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restaurants = FindMultipleRestaurantsLinqSync();
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Console.WriteLine($"Number of documents found: {restaurants.Count}");
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Console.WriteLine();
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// Find all restaurants
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Console.WriteLine("Finding all documents...:");
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restaurants = FindAllRestaurantsSync();
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Console.WriteLine($"Number of documents found: {restaurants.Count}");
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}
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public static List<Restaurant> FindMultipleRestaurantsBuilderSync()
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{
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// start-find-builders-sync
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var filter = Builders<Restaurant>.Filter
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.Eq("cuisine", "Pizza");
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return _restaurantsCollection.Find(filter).ToList();
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// end-find-builders-sync
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}
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public static List<Restaurant> FindMultipleRestaurantsLinqSync()
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{
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// start-find-linq-sync
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return _restaurantsCollection.AsQueryable()
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.Where(r => r.Cuisine == "Pizza").ToList();
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// end-find-linq-sync
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}
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private static List<Restaurant> FindAllRestaurantsSync()
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{
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// start-find-all-sync
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var filter = Builders<Restaurant>.Filter.Empty;
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return _restaurantsCollection.Find(filter)
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.ToList();
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// end-find-all-sync
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}
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private static void Setup()
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{
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// This allows automapping of the camelCase database fields to our models.
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var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
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ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
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// Establish the connection to MongoDB and get the restaurants database
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var mongoClient = new MongoClient(MongoConnectionString);
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var restaurantsDatabase = mongoClient.GetDatabase("sample_restaurants");
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_restaurantsCollection = restaurantsDatabase.GetCollection<Restaurant>("restaurants");
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}
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}

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