DeleteOneAsync is used in .Net 4.5 and
later versions for deleting single record in MongoDB by using C#, We should add
MongoDB reference for the working solution
Find the example below, Deleting data
in MongoDB document with the exact match of 'MasterID' key as '140'.
var result = await
collection.DeleteOneAsync(
Builders<BsonDocument>.Filter.Eq("MasterID", 140));