private static void LINQApplication()
{
bool exit = false;
while (!exit)
{
Console.Clear();
Console.WriteLine("LINQ Application Demo\n");
Console.WriteLine("<0> RETURN");
Console.WriteLine("<1> LINQ AuditTrailLog");
Console.Write("\nChoose an option... ");
ConsoleKeyInfo key = Console.ReadKey();
Console.WriteLine();
ZOperationResult operationResult = new ZOperationResult();
IAuditTrailGenericApplication <AuditTrailLog> application =
DIHelper.DIManager.GetService <IAuditTrailGenericApplication <AuditTrailLog> >();
IEnumerable <AuditTrailLog> enumerable;
Expression <Func <AuditTrailLog, bool> > where;
Func <IQueryable <AuditTrailLog>, IOrderedQueryable <AuditTrailLog> > orderBy;
switch (key.KeyChar) // <ENTER> = '\r'
{
case ('0'):
exit = true;
break;
case ('1'):
int id = 0;
Console.WriteLine("\nLINQ");
enumerable = application
.Search(operationResult, x => x.Id > id, o => o.OrderByDescending(x => x.Id));
if (operationResult.Ok)
{
foreach (AuditTrailLog entity in enumerable)
{
Console.WriteLine("{0} {1} {2}", entity.Id, entity.LogDate, entity.LogTime);
}
}
Console.WriteLine("\nLINQ with parameters");
where = x => x.Id > id;
orderBy = o => o.OrderByDescending(x => x.Id);
enumerable = application
.Search(operationResult, where, orderBy);
if (operationResult.Ok)
{
foreach (AuditTrailLog entity in enumerable)
{
Console.WriteLine("{0} {1} {2}", entity.Id, entity.LogDate, entity.LogTime);
}
}
Console.WriteLine("\nDynamic LINQ");
enumerable = application
.Search(operationResult, "Id > @0", new object[] { id }, "Id descending");
if (operationResult.Ok)
{
foreach (AuditTrailLog entity in enumerable)
{
Console.WriteLine("{0} {1} {2}", entity.Id, entity.LogDate, entity.LogTime);
}
}
break;
}
if (!exit)
{
Console.WriteLine("\n{0}\n{1}\n{2}",
application.GetType().FullName,
application.UnitOfWork.GetType().FullName,
application.UnitOfWork.DBMS.ToString());
if (!operationResult.Ok)
{
Console.WriteLine(operationResult.Text);
}
Console.Write("\nPress <KEY> to continue... ");
Console.ReadKey();
}
}
}
