How to do $in query in c# using LINQ

[Bob]

I want to fetch all records from a collection in one request, given a
list of keys (like a list of document IDs). So I want to use C#
driver to do the following type of query (probably using some form of
LINQ query):

db.Documents.find({DocumentId:{$in: ["a","b","c"]}});

I'm not sure what type of Linq queries are supported with the
driver.

Thanks.
Bob

[Robert Stam]

With the official C# driver you would write the query this way:

var documentIds = new BsonValue[] { "a", "b", "c" };
var query = Query.In("DocumentId", documentIds);
foreach (var document in collection.Find(query)) {
// process document
}

Support for querying using LINQ will be added post v1.0.

[craiggwilson]

Which driver are you using Bob?