barcode library c# DEBUGGING AND EXCEPTION HANDLING in Font

Creator Code 3/9 in Font DEBUGGING AND EXCEPTION HANDLING

CHAPTER 11 DEBUGGING AND EXCEPTION HANDLING
Code 3 Of 9 Drawer In None
Using Barcode maker for Font Control to generate, create Code 3/9 image in Font applications.
www.OnBarcode.com
Barcode Generator In None
Using Barcode printer for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Caution Be sure to specify the exact casing shown here when setting the <trace> element attributes in
Drawing QR Code ISO/IEC18004 In None
Using Barcode maker for Font Control to generate, create QR Code JIS X 0510 image in Font applications.
www.OnBarcode.com
Drawing UCC.EAN - 128 In None
Using Barcode drawer for Font Control to generate, create UCC.EAN - 128 image in Font applications.
www.OnBarcode.com
the Web.config file, because attributes are case-sensitive. If you specify any with the wrong case, you will get an error.
UPC-A Generation In None
Using Barcode creation for Font Control to generate, create UPC Code image in Font applications.
www.OnBarcode.com
UPC - 13 Printer In None
Using Barcode encoder for Font Control to generate, create EAN-13 image in Font applications.
www.OnBarcode.com
Using the Trace Viewer
Code 128 Code Set B Maker In None
Using Barcode encoder for Font Control to generate, create Code128 image in Font applications.
www.OnBarcode.com
Printing ABC Codabar In None
Using Barcode drawer for Font Control to generate, create ANSI/AIM Codabar image in Font applications.
www.OnBarcode.com
You have seen how to enable tracing for a single page or an entire application and how to add your own tracing statements. Although all that may seem to be sufficient ASP .NET tracing capability, one more important feature needs to be covered: trace.axd, or the trace viewer. The server stores the tracing information for a specified number of the most recently requested pages. (By default, this number is 10, but you can use the requestLimit attribute of the <trace> element in Web.config to change this value, as described in the previous section.) You can use the trace viewer to access all that trace information. This means that you can step through a number of different pages in the course of testing the application, and then review the trace for all those pages at your leisure when you re finished. Try It Out: Use the Trace Viewer In this example, you ll use the trace viewer to access the tracing information recorded by the server for the last ten pages requested. You ll see summary and detailed views of the tracing information all with just a browser and a few clicks! 1. Enable tracing at the application level. Do this by locating the <trace> element in the <system.web> section of the Web.config file and changing its enabled attribute to true (as described in the previous section). 2. Point your browser to Friends Reunion, log in, and start surfing to different pages (News, Assign Places, Search, and so on). 3. Browse to the trace.axd file in the application directory of Friends Reunion (http:// localhost/FriendsReunion/trace.axd). Your output should look like Figure 11-9. As you can see, trace.axd presents a summary list of the last ten pages for which you have tracing information recorded. For each entry, you have a link named View Details, which will take you to a details page. Note that in the example in Figure 11-9, we only navigated through seven pages, so the Remaining label at the right of the table heading indicates we have three more pages we could view. 4. Click any of the View Details links, and you will see the details page for that particular page. Figure 11-10 shows the details page for Default.aspx. Note that you re just getting the tracing information for a particular page; you re not getting regular content. That s because you re not actually requesting the pages now. You re just looking at the trace information that was generated at the time the page was requested.
ANSI/AIM Code 39 Recognizer In .NET Framework
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Create USS Code 39 In Objective-C
Using Barcode maker for iPad Control to generate, create Code 3/9 image in iPad applications.
www.OnBarcode.com
CHAPTER 11 DEBUGGING AND EXCEPTION HANDLING
PDF417 Encoder In Java
Using Barcode generation for Java Control to generate, create PDF-417 2d barcode image in Java applications.
www.OnBarcode.com
EAN 13 Scanner In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Figure 11-9. Viewing trace information in the trace viewer
Code 39 Extended Recognizer In C#
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
QR Code Creation In Java
Using Barcode drawer for Android Control to generate, create QR Code JIS X 0510 image in Android applications.
www.OnBarcode.com
Figure 11-10. Viewing details of the Default.aspx page tracing information
Create EAN / UCC - 13 In None
Using Barcode creation for Software Control to generate, create GS1-128 image in Software applications.
www.OnBarcode.com
Barcode Generator In VS .NET
Using Barcode creator for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
CHAPTER 11 DEBUGGING AND EXCEPTION HANDLING
Making EAN 13 In Java
Using Barcode generation for Eclipse BIRT Control to generate, create GTIN - 13 image in BIRT applications.
www.OnBarcode.com
1D Creator In VB.NET
Using Barcode generation for .NET framework Control to generate, create 1D image in VS .NET applications.
www.OnBarcode.com
How It Works When tracing is enabled at the application level, the server records the tracing information for pages most recently visited. The trace viewer makes this trace information available after the event. This trace recording is totally transparent and doesn t require any special intervention by the user; it just happens as users request pages. When you want to take a look at the tracing information captured by the server, just open a browser and navigate to trace.axd. In fact, you can actually access the trace viewer by using any URL that begins with the application directory and ends with the filename trace.axd, so something as random as http://localhost/ FriendsReunion/f1/f2/trace.axd will also do the job. Note that there s no such file as trace.axd in your application. What happens here is that the request is intercepted by a specialized HTTP Handler that responds by showing the recorded tracing information, instead of going to disk to look for the specified file name.
Decode EAN / UCC - 13 In C#
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Create GTIN - 12 In .NET
Using Barcode encoder for ASP.NET Control to generate, create UPC-A Supplement 5 image in ASP.NET applications.
www.OnBarcode.com
Note An HTTP Handler is a piece of code that gets a chance to work with HTTP requests at a basic level.
To learn more about the topic, refer to Pro ASP.NET 1.1 in VB .NET, by Steven Livingstone and John Timney (Apress; ISBN: 1-59059-352-9) or the MSDN article at http://msdn.microsoft.com/msdnmag/issues/ 02/09/HTTPPipelines/.
Copyright © OnBarcode.com . All rights reserved.