Update specific field in mongodb document : <p>I using C# driver to use MongoDb in small projects, and now I stuck with updating documents.
trying to figure out how to update the field <strong>AVG</strong> (int)</p>

<p>here is my code:</p>

<pre><code>IMongoCollection&lt;Student&gt; studentCollection = db.GetCollection&lt;Student&gt;("studentV1");

Student updatedStudent = new Student() { AVG = 100, FirstName = "Shmulik" });

studentCollection.UpdateOne(
        o=&gt;o.FirstName == student.FirstName,
            **&lt;What should I write here?&gt;**);
</code></pre>

<p>there is simple and clean way to update specific field(s) like the method <code>ReplaceOne(updatedStudent)</code>?</p>
