public ActionResult AnyQuery()
{
var awContext = new AdventureWorks();
var query = awContext.SalesOrderDetails.Any(x => x.SalesOrderHeader.Customer.Person.LastName == "Johnson");
var queryTextModel = new QueryTextModel() { QueryText = "AnyQuery" };
return View("QueryText", queryTextModel);
}
public ActionResult EagerLoadQuery(int id)
{
// 51739
var awContext = new AdventureWorks();
var query = awContext.SalesOrderHeaders
.Where(x => x.SalesOrderID == id)
.Include(x => x.SalesOrderDetails)
.FirstOrDefault();
var salesOrderDetails = query.SalesOrderDetails.Where(x => x.UnitPrice > 100).ToList();
var queryTextModel = new QueryTextModel() { QueryText = "EagerLoadQuery" };
return View("QueryText", queryTextModel);
}
public ActionResult DefaultIfEmptyQuery()
{
var awContext = new AdventureWorks();
var person = new Person()
{
LastName = "Sakson"
};
var people = awContext.People.Where(x => x.LastName == "Sakson").ToList().DefaultIfEmpty(person);
var queryTextModel = new QueryTextModel() { QueryText = people.First().LastName };
return View("QueryText", queryTextModel);
}
public ActionResult EagerLoadForEachQuery()
{
var awContext = new AdventureWorks();
var query = awContext.SalesOrderHeaders
.Include(x => x.SalesOrderDetails)
.Take(1000);
var totalUnitPrice = 0m;
foreach (var order in query)
{
foreach (var detail in order.SalesOrderDetails)
{
totalUnitPrice += detail.UnitPrice;
}
}
var queryTextModel = new QueryTextModel() { QueryText = "LazyLoadForEachQuery" };
return View("QueryText", queryTextModel);
}
public ActionResult EFCasingQuery()
{
var awContext = new AdventureWorks();
var lower = awContext.People.Where(x => x.LastName == "Johnson").ToList().Count;
var upper = awContext.People.Where(x => x.LastName == "JOHNSON").ToList().Count;
var mixed = awContext.People.Where(x => x.LastName == "JoHnSON").ToList().Count;
var queryTextModel = new QueryTextModel() { QueryText = "EFCasingQuery" };
return View("QueryText", queryTextModel);
}
public ActionResult SingleQuery()
{
var awContext = new AdventureWorks();
var query = awContext.SalesOrderDetails.Single(x => x.SalesOrderHeader.Customer.Person.LastName == "Sacksteder");
var queryTextModel = new QueryTextModel() { QueryText = "SingleQuery" };
return View("QueryText", queryTextModel);
}
public ActionResult SeeEFQueryWithToString()
{
var awContext = new AdventureWorks();
var query = awContext.Customers
.Where(x => x.Person.LastName == "Johnson")
.Include(x => x.SalesOrderHeaders)
.Include(x => x.Person);
var queryTextModel = new QueryTextModel() { QueryText = query.ToString() };
return View("QueryText", queryTextModel);
}
public ActionResult LazyLoadDisposedContextQuery()
{
SalesOrderHeader query;
var queryTextModel = new QueryTextModel();
using (var awContext = new AdventureWorks())
{
query = awContext.SalesOrderHeaders
.Where(x => x.SalesOrderID == 51739)
.FirstOrDefault();
}
try
{
var salesOrderDetail = query.SalesOrderDetails.Where(x => x.UnitPrice > 100).ToList();
}
catch(Exception ex)
{
queryTextModel.QueryText = ex.Message;
return View("QueryText", queryTextModel);
}
queryTextModel.QueryText = "Never going to get here.";
return View("QueryText", queryTextModel);
}
public ActionResult IncludeQuery()
{
var awContext = new AdventureWorks();
var query = awContext.SalesOrderDetails
.Where(x => x.SalesOrderHeader.Customer.Person.LastName == "Johnson")
.Include(x => x.SalesOrderHeader)
.Include(x => x.SalesOrderHeader.Customer.Person)
.Include(x => x.SalesOrderHeader.Customer.Person.PersonPhones)
.Include(x => x.SalesOrderHeader.Customer.Person.EmailAddresses).ToList();
var queryTextModel = new QueryTextModel() { QueryText = "IncludeQuery" };
return View("QueryText", queryTextModel);
}