c# - MongoCollection 到 Collection

Question

我有一个名为 Employee 的类。从我的 Controller 我传递 IEnumerable<Employee>查看。如何转换 MongoDB.Driver.MongoCollection<Employee>至 IEnumerable<Employee> ？

public ActionResult Index()
{
    var server = MongoServer.Create("mongodb://127.0.0.1");
    var db = server.GetDatabase("employee");
    var employeeCollection = new Collection<Employee>
    {
        new Employee
        {
            EmployeeId = new ObjectId(),
            EmployeeName = "A"
        },
        new Employee
        {
            EmployeeId = new ObjectId(),
            EmployeeName = "B"
        }
    };
    var collection = db.GetCollection<Employee>("employee");

    collection.InsertBatch(employeeCollection);

    return View(collection);
}

Answer 1

您可以只使用 FindAll，这样您就可以枚举整个集合:

return View(collection.FindAll());

您也可以使用 AsQueryable 来获得相同的结果:

return View(collection.AsQueryable());

但是你应该小心这样做。该集合可能包含数百万个文档。