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‎source/includes/code-examples/UpdateArrays.cs

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using MongoDB.Bson;
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using MongoDB.Bson.Serialization.Attributes;
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using MongoDB.Bson.Serialization.Conventions;
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using MongoDB.Driver;
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using WriteData.Models;
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using static System.Console;
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namespace CSharpExamples.WriteData;
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public static class UpdateArrays
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{
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private static IMongoCollection<Restaurant> _restaurantsCollection;
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//private static string _mongoConnectionString = "<Your MongoDB URI>";
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private static string _mongoConnectionString =
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"mongodb+srv://mikewoofter:[email protected]/?retryWrites=true&w=majority";
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public static UpdateResult UpdateOneArrayPush()
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{
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// start-update-one-push
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var update = Builders<Restaurant>.Update
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.Push(restaurant => restaurant.Grades, new GradeEntry()
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{
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Date = DateTime.Now,
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Grade = "A",
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Score = 96
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});
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var result = _restaurantsCollection.UpdateOne(filter, update);
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return result;
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// end-update-one-push
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}
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public static async Task<UpdateResult> UpdateOneArrayPushAsync()
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{
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// start-update-one-push-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var update = Builders<Restaurant>.Update
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.Push(restaurant => restaurant.Grades, new GradeEntry()
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{
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Date = DateTime.Now,
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Grade = "A",
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Score = 96
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});
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var result = await _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-one-push-async
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}
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public static UpdateResult UpdateOneArrayAddToSet()
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{
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// start-update-one-addtoset
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = _restaurantsCollection.UpdateOne(filter, update);
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return result;
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// end-update-one-addtoset
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}
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public static async Task<UpdateResult> UpdateOneArrayAddToSetAsync()
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{
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// start-update-one-addtoset-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = await _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-one-addtoset-async
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}
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public static UpdateResult UpdateManyArrayAddToSet()
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{
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// start-update-many-addtoset
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = _restaurantsCollection.UpdateMany(filter, update);
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return result;
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// end-update-many-addtoset
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}
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public static async Task<UpdateResult> UpdateManyArrayAddToSetAsync()
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{
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// start-update-many-addtoset-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = await _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-many-addtoset-async
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}
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public static UpdateResult UpdateManyArrayPushEach()
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{
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// start-update-many-pusheach
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var newGrades = new List<GradeEntry>
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{
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new GradeEntry { Date = DateTime.Now, Grade = "A", Score = 95 },
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new GradeEntry { Date = DateTime.Now, Grade = "B+", Score = 89,}
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};
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var scoreSort = Builders<GradeEntry>.Sort.Descending(g => g.Score);
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var update = Builders<Restaurant>.Update.PushEach(
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"Grades",
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newGrades,
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position: 0,
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sort: scoreSort);
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var result = _restaurantsCollection.UpdateMany(filter, update);
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return result;
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// end-update-many-pusheach
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}
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public static UpdateResult UpdateManyArrayPushEach()
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{
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// start-update-many-pusheach
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var newGrades = new List<GradeEntry>
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{
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new GradeEntry { Date = DateTime.Now, Grade = "A", Score = 95 },
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new GradeEntry { Date = DateTime.Now, Grade = "B+", Score = 89,}
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};
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var scoreSort = Builders<GradeEntry>.Sort.Descending(g => g.Score);
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var update = Builders<Restaurant>.Update.PushEach(
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"Grades",
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newGrades,
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position: 0,
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sort: scoreSort);
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var result = _restaurantsCollection.UpdateMany(filter, update);
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return result;
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// end-update-many-pusheach
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}
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public static async Task<UpdateResult> UpdateManyArrayPushEachAsync()
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{
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// start-update-many-pusheach-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = await _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-many-pusheach-async
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}
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public static UpdateResult UpdateOneArrayPushEach()
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{
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// start-update-one-pusheach
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var newGrades = new List<GradeEntry>
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{
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new GradeEntry { Date = DateTime.Now, Grade = "A", Score = 95 },
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new GradeEntry { Date = DateTime.Now, Grade = "B+", Score = 89,}
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};
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var scoreSort = Builders<GradeEntry>.Sort.Descending(g => g.Score);
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var update = Builders<Restaurant>.Update.PushEach(
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"Grades",
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newGrades,
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position: 0,
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sort: scoreSort);
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var result = _restaurantsCollection.UpdateOne(filter, update);
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return result;
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// end-update-one-pusheach
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}
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public static async Task<UpdateResult> UpdateOneArrayPushEachAsync()
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{
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// start-update-one-pusheach-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var newGrades = new List<GradeEntry>
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{
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new GradeEntry { Date = DateTime.Now, Grade = "A", Score = 95 },
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new GradeEntry { Date = DateTime.Now, Grade = "B+", Score = 89,}
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};
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var scoreSort = Builders<GradeEntry>.Sort.Descending(g => g.Score);
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var update = Builders<Restaurant>.Update.PushEach(
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"Grades",
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newGrades,
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position: 0,
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sort: scoreSort);
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var result = _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-one-pusheach-async
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}
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public static async Task<UpdateResult> UpdateOneArrayPushEachAsync()
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{
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// start-update-one-addtoset-async
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "Downtown Deli");
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var firstGradeEntry = _restaurantsCollection.Find(filter).FirstOrDefault().Grades[0];
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var update = Builders<Restaurant>.Update
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.AddToSet(restaurant => restaurant.Grades, firstGradeEntry);
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var result = await _restaurantsCollection.UpdateOneAsync(filter, update);
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return result;
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// end-update-one-addtoset-async
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}
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// private static void LinqTest()
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// {
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// var x = _restaurantsCollection.UpdateOne(l => l.Id == another.Id && l.AnArrayMember.Any(l => l.Id == anArrayId),
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// Builders<Restaurant>.Update.Set(l => l.AnArrayMember.ElementAt(-1).Deleted, true));
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//
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// Builders<ReplaceOne.Restaurant>.Update.
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// }
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public 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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public static void ResetSampleData()
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{
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var filter = Builders<Restaurant>.Filter
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.Eq("name", "2 Bagels 2 Buns");
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var update = Builders<Restaurant>.Update
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.Set(restaurant => restaurant.Name, "Bagels N Buns");
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_restaurantsCollection.UpdateOne(filter, update);
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}
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}

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