Cris Cris - 8 days ago 5
C# Question

MongoDB for .Net simple display data example

I'm trying to display data from my MongoDB running on "mongodb://localhost:27017" to a .NET app.

This is how the Database looks.

enter image description here

This example is from the MongoDB C# Driver page on github and i can't even get pass the compile time errors:

1. I had to remove

await
.

2. The error i am getting now is under
list



foreach statement cannot operate on variables of type 'System.Threading.Tasks.Task>' because 'System.Threading.Tasks.Task>' does not contain a public definition for 'GetEnumerator'


using MongoDB.Bson;
using MongoDB.Driver;
using System;

namespace MongoTest2
{
class Program
{
public class Person
{
public ObjectId Id { get; set; }
public string Name { get; set; }
}

static void Main(string[] args)
{
var client = new MongoClient("mongodb://localhost:27017");
var database = client.GetDatabase("test");
var collection = database.GetCollection<Person>("messages");

collection.InsertOneAsync(new Person { Name = "Jack" });

var list = collection.Find(x => x.Name == "Jack")
.ToListAsync();

foreach (var person in list)
{
Console.WriteLine(person.Name);
}
}
}
}


Could anyone share a simple working code snippet, or a link to a working tutorial? This is the second day and i'm still stuck on this issue.

Answer

You should either call synchrone methods: InsertOne() and ToList() or wait for results of asynchrone methods:

collection.InsertOneAsync(new Person { Name = "Jack" }).Wait();

var list = collection.Find(x => x.Name == "Jack")
            .ToListAsync().Result;