Delete or Remove data or documents from collection using C# and MongoDB

You can use the DeleteOneAsync method and the DeleteManyAsync method to remove documents from a collection. The method takes a conditions document that determines the documents to remove.

Follow the Install and Connect to MongoDB step to connect to a running MongoDB instance.

The following operation removes all documents that match the specified condition.

 using System;  
 using System.Threading.Tasks;  
 using MongoDB.Bson;  
 using MongoDB.Driver;  
 namespace MongoDB  
 {  
   class Program  
   {  
     static void Main(string[] args)  
     {  
       DeleteDoc(args).Wait();  
       Console.WriteLine("Press Enter");  
       Console.ReadLine();  
     }  
     static async Task DeleteDoc(string[] args)  
     {  
       var _connectionString = "mongodb://localhost:27017";  
       var _client = new MongoClient(_connectionString);  
       var _database = _client.GetDatabase("blog");  
       var _collection = _database.GetCollection("users");  
       var _filter = Builders.Filter.Eq("Name", "Test");  
       var _result = await _collection.DeleteManyAsync(_filter);  
     }  
   }  
 }