Replace a Document
You can replace one document with another by using the ReplaceOne() synchronous method
or the ReplaceOneAsync() asynchronous method on a collection object.
Example
The examples on this page use the following Restaurant, Address, and GradeEntry
classes as models:
public class Restaurant { public ObjectId Id { get; set; } public string Name { get; set; } [] public string RestaurantId { get; set; } public string Cuisine { get; set; } public Address Address { get; set; } public string Borough { get; set; } public List<GradeEntry> Grades { get; set; } }
public class Address { public string Building { get; set; } [] public double[] Coordinates { get; set; } public string Street { get; set; } [] public string ZipCode { get; set; } }
public class GradeEntry { public DateTime Date { get; set; } public string Grade { get; set; } public float Score { get; set; } }
Note
The documents in the restaurants collection use the camel-case naming
convention. The examples in this guide use a ConventionPack
to deserialize the fields in the collection into Pascal case and map them to
the properties in the Restaurant class.
To learn more about custom serialization, see Custom Serialization.
The following code replaces the first document in the restaurants collection that has a
value of "Pizza" in the cuisine field. After the replacement, this document will
have a name field with a value of "Mongo's Pizza" and new values for the
address and borough fields.
Select the Asynchronous or Synchronous tab to see the corresponding code.
Expected Result
Running either of the preceding full examples prints the following results:
First pizza restaurant before replacement: J&V Famous Pizza Restaurants modified by replacement: 1 First pizza restaurant after replacement: Mongo's Pizza Resetting sample data...done.
Additional Information
To learn more about replacing documents, see the Replace Operation guide.
To learn more about using builders, see Operations with Builders.