ASP.NET Web PDF Document Viewer/Editor Control Library

The next events, PreMapRequestHandler and PostMapRequestHandler, are new to ASPNET 20, and follow a different pattern in that there s no MapRequestHandler event In ASP NET 1x, however, MapRequestHandler was a well-known occurrence in the request processing pipeline For someone trying to dynamically map handlers based on the context of the request (user, path info, and so forth), it was a problem that no hook existed to intercept this event Other events further up or down the pipeline had to be leveraged for this purpose, even if they were designed for other types of processing To address this problem, the ASP NET team added this new pair of events You can use them to affect how the pipeline selects a handler, or to override the Framework s choice and select one programmatically yourself.

vb.net qr code sample, onbarcode.barcode.winforms.dll crack, winforms code 128, vb.net generate ean 128, vb.net generator ean 13 barcode, vb.net generator pdf417, itextsharp remove text from pdf c#, pdfsharp replace text c#, vb.net generate data matrix, itextsharp remove text from pdf c#,

The Oracle JDBC driver provides the following methods to enable and disable buffering of ARRAY contents: public void setAutoBuffering(boolean enable); public boolean getAutoBuffering(); The setAutoBuffering() method enables or disables auto-buffering, and the getAuto Buffering() method returns a boolean value indicating whether auto-buffering is enabled or not. By default, auto-buffering is disabled. When you enable auto-buffering, Oracle keeps a local copy of all converted elements. This avoids the data-conversion process for the second and subsequent access of the array elements. This can lead to substantial performance improvements, as you will see shortly in the benchmark. However, be aware that this could increase consumption of memory in your JDBC applications, which could have its own impact on performance and scalability.

Storing data in various files, reading them into memory, and querying and manipulating the resulting in-memory data collection is a sufficient approach for many applications working with data, but there comes a point where a more persistent data handling is required For example, consider a business that has two applications that need to access the same set of data about employees One way to do this is to store data in a text file and work with this data file from both applications But this approach is quite vulnerable; you would quickly realize how redundant text files can get when adding new pieces of data (say you wanted to add an address next to the name, department, and age of each employee) or if you wanted to group your employee data by introducing various relationships (say, multiple addresses per employee).

When the Post event fires, an instance of your handler has been created; so by examining the extension of the URL being requested, you can actually cast the generic Handler property of the Context (typed as IHttpHandler) into a concrete class We ll take a close look at these handy methods later in the chapter in the HTTP Handlers section The next event is AcquireRequestState This event exposes your first opportunity to use or create any Session variables It s also a hook you can use to implement custom session management, but the need for this is rare, since ASP NET exposes three options (in process, state server, and SQL Server) out of the box, and version 20 exposes a provider model for customizing that behavior of the session server.

Caution There is a bug in 10g Release 1 (and 9i Release 2), due to which if you use the numeric extension method (e.g., getIntArray()) when auto-buffering is enabled, the program can sometimes give a NullPointerException. In particular, in my tests, I was able to reproduce this bug consistently when I first used the getArray() method and then used the getIntArray() method immediately on the same array to retrieve collection elements (with auto-buffering enabled).

Even if you did manage to find a good storage alternative, you would still have to modify both applications to read and write this new data format Databases make scenarios like these much easier to cope with by enforcing centralized control of persistent data (data that is more persistent than what appears in a single application) and by giving you the freedom to define, manipulate, and query this data in an application-neutral way Databases give you many benefits; some of the more important ones are listed here: Data security: Having a centralized control of data, it becomes possible to erect a full security system around your data, giving specific access rules for each type of access or parts of the database.