how to implement barcode system in c# Lesson 2 in .NET

Paint QR in .NET Lesson 2

Lesson 2
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Barcode Maker In .NET
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Using the Performance Console
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QR-Code Generation In VS .NET
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12-9
QR Creation In VB.NET
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1D Generation In Visual Studio .NET
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Lesson 2: Using the Performance Console
Encoding Code 128A In .NET
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Generate Bar Code In .NET Framework
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With the Performance Console, you can measure the activity of any computer on the network. System Monitor and the Performance Logs And Alerts snap-ins are built in as parts of the Performance console (perfmon.msc). The System Monitor snap-in allows for the viewing of real-time performance data as collected from configurable counters. The Performance Logs And Alerts snap-in allows for the recording of performance data (logs) and configurable actions when a threshold for a counter is breached (alerts). The Performance console allows you to perform multiple tasks, including the following:
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Collect and view real-time performance data View data collected in a log Present data in a graph, histogram, or report view Create HTML pages from views by importing of log file settings Save monitoring configurations that can be loaded into System Monitor on other computers
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After this lesson, you will be able to
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Making Code-128 In Objective-C
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Monitor real-time performance data Record performance data into a log file Configure system and performance data alerts
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Generating USS Code 128 In Visual Studio .NET
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Estimated lesson time: 20 minutes
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Configuring System Monitor
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With System Monitor, you can collect and view data by configuring counters that report hardware, application, and service activity for any computer on your network. Three configurations must be made for the data you wish to collect.
Type of data You can specify one or more counter instances of performance monitor objects for which you want data to be reported. Source of data Either local or remote computer data can be collected by a counter. You must be a local administrator or a member of the Performance Log Users group on the computer from which you wish to collect data. Sampling intervals Data can be recorded manually in real time, or set to a peri odic interval that you specify.
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Monitoring Microsoft Windows Server 2003
Viewing Data
When you first open System Monitor, three counters are loaded and begin to report real-time data:
Memory: Pages/Second
Physical Disk(_Total): Average Disk Queue Length
Processor(_Total): % Processor Time
Figure 12-3 shows the System Monitor with the default counters loaded.
Figure 12-3
The System Monitor of the Performance console
Additional counters can be added or removed by choosing Add (Ctrl+I) on the toolbar, or right-clicking anywhere in the details pane and choosing Add Counters from the shortcut menu. In the Add Counters dialog box, you can select any of the available counters for either the local computer or any remote computer on your network. Counters are arranged and available for use based on the type of object, the counter in the object category, and the instance of the counter.
Object Counter counter.
A logical collection of resource, service, or application counters. A data-reporting item. The data reported depends on the type of
Instance Refers to one or more occurrences of a counter, indexed by the num ber available on the computer. For example, on a computer with two processors, Instance 0 would refer to the first processor, Instance 1 to the second, and _Total the aggregate of both instances. In the case of a single instance of a counter, Instance 0 and _Total will be available.
Lesson 2
Using the Performance Console
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Figure 12-4 shows the %Processor Time counter for Server01, which is a singleprocessor computer.
Figure 12-4
%Processor Time Counter Single Processor
Exam Tip Remember that _Total represents the combined data from multiple instances of a counter when multiple instances are available.
Logging and Alerts
With Performance Logs And Alerts, you can collect performance data automatically from local or remote computers. You can view logged counter data by using System Monitor, or you can export the data to spreadsheet programs or databases for analysis and report generation. You can configure any counters available within System Monitor for use in Performance Logs And Alerts, with the following options:
Collect data in a CSV or tab-separated format for exporting. View Counter Log data during logging and post-collection. Set Trace Logs (event-driven) based on available providers. Define parameters for the log file including start and stop times and maximum file size. Set an alert on a counter with options to send an administrative message, an appli cation is executed, or a log is started when the configured threshold on the counter is breached.
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