free barcode generator in asp net c# Part II Designing Types in .NET

Compose Denso QR Bar Code in .NET Part II Designing Types

orderid 30004 30001 30007 10001 10005 40001 10006 20001 40005 20002 30003 orderdate 2002-04-18 00:00:00.000 2002-08-02 00:00:00.000 2002-09-07 00:00:00.000 2002-12-24 00:00:00.000 2002-12-24 00:00:00.000 2003-01-09 00:00:00.000 2003-01-18 00:00:00.000 2003-02-12 00:00:00.000 2004-02-12 00:00:00.000 2004-02-16 00:00:00.000 2004-04-18 00:00:00.000 empid custid qty 3 3 3 1 1 4 1 2 4 2 3 C A D A B A C B A C B 22 10 30 12 20 40 14 12 10 20 15

(<col> = <@parameter> OR <@parameter> IS NULL)

Within the count_requests_in_session method, a hash provided by Rails called session is used. Automatically, session is always a data store associated with the current session, so anything you write to it or read from it is always associated with the current session. In this case, you initialize session[:requests] with 0 if it not already defined, and then you increase the count on the next line. You can access this information from your views now quite easily. Go to app/views/entries/view_all.html.erb and add this line to the top of the file: <%= session[:requests] %> If you now load http://localhost/entries/view_all (or just http://localhost/ if you followed the Routing section earlier), you ll see 1 at the top of the page. Reload the page, and the number increases for each reload. Sessions in action!

CHAR[(n)] VARCHAR[2](n) DATE TIMESTAMP INTERVAL BLOB CLOB RAW(n) NUMBER NUMBER(n) NUMBER(n,m) BINARY_FLOAT BINARY_DOUBLE

You may be unable to fully reproduce some of the effects listed above . There may be technical and other reasons . One of these spells bad news in terms of this chapter s topic: you may not see the colors exactly as I saw them when preparing the sample file . Unfortunately, no two monitors will display colors in exactly the same way, even if they re two identical models from the same production line . In addition, the colors change as the screen ages, as will our perception of these colors as we ourselves grow older . There s not a lot anyone can do about that, and these kinds of problems don t get in the way of technology . All you can do is calibrate your monitor, which will have the effect of fine-tuning it to the standard . You require appropriate software to do this, although software provided with the monitor usually only appears to do so . But even if you have the right calibration software (which doesn t come cheap) and use it every couple of weeks as you should, what benefit is it to you in this context Well, if you adorn your elegant presentation chart with a soft, light, pleasant, and freshly calibrated shade of brown, and this then appears on the customer s

The first difference from previous examples you ll notice in Listing 5-8 is the Page directive, shown here: <%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="ControlShowAndTell.WebForm1"%> AutoEventWireup and Codebehind are attributes specific to Visual Studio .NET. AutoEventWireup is almost always set to false. Setting this attribute to true or omitting it causes an event handler named Page_Init to automatically be wired up to the Init event of the page. Using AutoEventWireup seemed like a good idea at the time but can cause some confusion in practice. There were many reports during early ASP.NET betas of developers accidentally using AutoEventWireup and manually wiring up the events as well, resulting in two calls to the event rather than the desired single call. Visual Studio .NET uses Codebehind at design time, and the .NET Framework ignores it. Projects that don t use Visual Studio .NET commonly use the Src attribute of the Page directive to point to the code to run for the page.

STATISTICS TIME is a session option that returns the net CPU and elapsed clock time information about the statements that you run. It returns this information for both the time it took to parse and compile the query and the time it took to execute it. To demonstrate the use of this session option, rst clear both the data and execution plans from cache:

private void Button_Click(object sender, RoutedEventArgs e) { NavigationService.Navigate( new Uri("/InnerView1.xaml", UriKind.Relative)); }