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Developer guide for UPC-A generation and data encoding in ASP.NET using ASP . NET Barcode Generator.
Control serialization by making variables transient As stated earlier, the container performs serialization and deserialization of instance variables during passivation and activation. Serialization and deserialization are expensive processes. When you store large objects in your instance variables, the server spends a lot of CPU cycles and memory in the serialization and deserialization process. If you don t want to serialize a particular object, mark that object to be a transient object and the container will skip that object during passivation/activation. asp.net upc-a UPC-A . NET Control - UPC-A barcode generator with free . NET ...
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6 Apr 2005 ... Demonstrates a method to draw UPC-A barcodes using C#. ... NET 2003 - 7.87 Kb. Image 1 for Drawing UPC-A Barcodes with C# ... @Stateful public class PlaceOrderBean implements PlaceOrder { transient private Bidder bidder; private List<Item> items; private ShippingInfo shippingInfo; private BillingInfo billingInfo; .. } Copying via memcpy requires a temporary pin_ptr, too but a short-living one: extern "C"__declspec(dllimport) void NativeWeakEncrypt(unsigned char* rgb, int cb, unsigned char key); void CallNativeWeakEncrypt(array<unsigned char>^ bytes, unsigned char key) { if (!bytes) throw gcnew ArgumentNullException("bytes"); int cb = bytes->Length; unsigned char* nativeBytes = new unsigned char [cb]; { pin_ptr<unsigned char> pinptrBytes = &(bytes[0]); memcpy(nativeBytes, pinptrBytes, cb); } NativeWeakEncrypt(nativeBytes, cb, key); { pin_ptr<unsigned char> pinptrBytes = &(bytes[0]); memcpy(pinptrBytes, nativeBytes, cb); } delete[] nativeBytes; } The static function Copy from the helper class System::Runtime::InteropServices::Marshal can be a neat helper for copying between managed and native arrays The following code shows how it can be used: extern "C" __declspec(dllimport) void NativeWeakEncrypt(unsigned char* rgb, int cb, unsigned char key); void CallNativeWeakEncrypt(array<unsigned char>^ bytes, unsigned char key). asp.net upc-a Barcode UPC-A - CodeProject
UPC-A C# class that will generate UPC-A codes. ... Background. I originally built this application in VB. NET . While I was learning C#. NET , I decided to re-write it ... asp.net upc-a .NET UPC-A Generator for C#, ASP . NET , VB.NET | Generating ...
NET UPC-A Generator Controls to generate GS1 UPC-A barcodes in VB. NET , C# applications. Download Free Trial Package | Developer Guide included ... Here we have defined bidder as a transient object and the EJB container will not serialize the bidder object when a bean instance gets passivated or when its state is replicated to another server. If after marking several fields as transient you observe data missing from your objects, it simply means that you went a little overboard and will need to undo some of the fields you marked as transient. The following are some guidelines that you can use to optimize the performance of your MDB applications. We provided some MDB best practices in chapter 5 that you can use as a starting point. After implementing those techniques, you may want to revisit this section for some additional tips. asp.net upc-a UPC-A Barcode Generator for ASP . NET Web Application
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The UPC-A Code and the assignment of manufacturer ID numbers is controlled in the ... ASP . NET /Windows Forms/Reporting Services/Compact Framework ... namespace StockTrader { public abstract class StockTraderStub : System.Web.Services.WebService { public abstract Quote RequestQuote(string Symbol); } [XmlTypeAttribute(Namespace= "http://www.bluestonepartners.com/schemas/StockTrader/")] public class Quote { public string Symbol; public string Company; public string DateTime; public System.Double High; public System.Double Low; public System.Double Open; public System.Double Last; public System.Double Change; public System.Double PercentChange; public System.Double Previous_Close; public System.Double High_52_Week; public System.Double Low_52_Week; } } Notice the following important points: The definition file includes one stub class that encapsulates all operations and then any number of additional classes for the data types. The interface definitions for the operations are enclosed within an abstract class called StockTraderStub. The stub class derives from the System.Web.Services.WebService class, so it can be implemented in a Web service. In this listing it contains a single abstract function definition for the RequestQuote operation. The definition file contains a separate class definition for the Quote type. This is how you are able to reference the Quote type from code-behind. Most of the performance issues surrounding MDBs are generally related to the underlying JMS providers. Some general tips that we provided in chapter 4 include choosing the right messaging models and persistence strategy, using the correctly sized messages, setting the lifetime of messages, and using appropriate filters and handling of poison messages. Check your vendor documentation for the JMS provider you are using for your applications. { if (!bytes) throw gcnew ArgumentNullException("bytes"); int cb = bytes->Length; unsigned char* nativeBytes = new unsigned char[cb]; using System::Runtime::InteropServices::Marshal; Marshal::Copy( bytes, 0, // source IntPtr(nativeBytes), cb); // destination NativeWeakEncrypt(nativeBytes, cb, key); Marshal::Copy( IntPtr(nativeBytes), bytes, 0, cb); // source // destination Initializing resources Like stateless session beans, MDB instances are pooled, and initialization tasks are performed only once, for any given MDB instance. You can perform expensive tasks such as initialization of resources (opening database connections, sockets, files, etc.) in any method annotated with @PostConstruct. Methods marked with @PostConstruct will be invoked only once, immediately after creation. Similarly, close any resources in methods annotated with @PreDestroy. This will significantly improve the performance of your classes in general, and your MDBs in particular. Sizing the pool MDBs are pooled, and the pool size is usually configured using vendor-specific deployment descriptors. Improper sizing of MDB pools may degrade perfor-
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