how to implement barcode system in c# Assign Permissions to the Printers in VS .NET

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Assign Permissions to the Printers
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1. From the Printers And Faxes folder, open the Properties page of the SalesPrinter. 2. Click the Security tab. 3. Select the Everyone group and click Remove. 4. Click Add. 5. Type Sales Printer Users and click OK.
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6. Assign Allow Print permission to the Sales Printer Users.
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7. Repeat steps 1 through 6 to allow only the Marketing Printer Users group Print
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permission to the MarketingPrinter.
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Configure a Performance Log
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1. Open the Performance MMC from the Administrative Tools group.
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2. Expand the Performance Logs And Alerts node and select Counter Logs.
3. Right-click Counter Logs and choose New Log Settings.
4. Enter the log name Printer Utilization.
5. Click OK. The Printer Utilization log s Properties dialog box appears.
6. Click Add Counters.
7. From the Performance Object drop-down list, select Print Queue.
8. In the Counters list, select Total Pages Printed.
9. In the Instances list, select SalesPrinter.
10. Click Add.
11. In the Instances list, select MarketingPrinter.
12. Click Add.
13. Click Close. The Printer Utilization dialog box indicates that the log will now track
Total Pages Printed for each print queue.
14. Select 30 minutes as the sampling interval by typing 30 in the Interval box and
selecting Minutes from the Units drop-down list.
Note
Because Total Pages Printed is cumulative, from the time a print server starts, or from the time the spooler service is restarted, it is unnecessary to maintain a short sampling interval. You could sample at very long intervals as long as the server or the spooler service is not restarted in the middle of those intervals.
15. Click OK to close the Printer Utilization dialog box.
16. If you have not configured another performance log on this computer, you will be
prompted to create the C:\Perflogs folder, in which logs are saved by default.
Click Yes to confirm.
17. In the Performance Logs detail pane, the Printer Utilization log is green, indicating
that it is running.
18. Stop the log by right-clicking it and choosing Stop.
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Once a performance log has been created, you can examine the log in System Monitor. Click the View Log Data button on the System Monitor toolbar and you can add the performance log you generated. This particular log will not be valid for two reasons. First, two samples must be saved in a performance log for System Monitor to make use of the log s data. Unless you wait 60 minutes, or decrease the sampling interval, you will not be able to load the log. Second, Total Pages Printed will not increment because the printer does not exist, so pages do not print.
Troubleshooting Lab
The Marketing department is complaining about print quality on the MarketingPrinter. When they print from their Windows XP desktops using Microsoft Office applications, documents print perfectly. But when they print from Adobe applications, the docu ments do not always reflect the desired results. The Sales department, which uses a mix of Windows 2000 and Windows XP workstations, Microsoft Office, and Microsoft Customer Relationship Management (CRM), does not report any problems with the SalesPrinter. As you consider the problem, it occurs to you that some applications produce different results depending on whether the printer is using PostScript or a non-PostScript driver.
Analyze the Solution
Where should you consider adding PostScript drivers (Choose all that apply.) a. The Server Properties dialog box of the print server. b. The printer Properties dialog box of the MarketingPrinter. c. The printer Properties dialog box of the SalesPrinter. d. The printers installed on the desktops of each marketing department user.
The correct answer is b. Adding the PostScript driver for the MarketingPrinter will cause that printer to use the PostScript driver, without affecting the SalesPrinter. Although each client printer will require the PostScript driver as well, you do not need to add the driver manually. Windows 2000 and Windows XP clients will download the new driver automatically.
Change the Printer Driver
1. Open the Printers And Faxes folder. 2. Open the Properties dialog box of the MarketingPrinter. 3. Click the Advanced tab. 4. Click New Driver. The Add Printer Driver Wizard appears. 5. Click Next.
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Printers
6. Select the Manufacturer: HP. 7. Select the Printer: HP LaserJet 8100 Series PS. 8. Click Next, and then click Finish. 9. Notice that the PostScript driver is now the default driver. 10. Click the Driver drop-down list and you will find that the former, PCL driver is still listed. If changing the driver to PostScript does not solve the problem, you can easily switch back to the PCL driver.
Summary
Printer implementation in Windows Server 2003 is modular, consisting of the printer hardware itself, a print server with a shared, logical printer representing the physical printer by indicating that printer s local or network attached port, and a logical printer on a client that connects to the shared printer on the print server. Understanding the structure and the terminology is critical because documentation and the user interface is inconsistent and sometimes misleading. Shared printers are published to Active Directory, which enables users to easily search for printers based on location or other printer properties. When a user finds a printer in the Find Printers dialog box, double-clicking the printer installs the printer to the user s computer. Computers running the Windows operating system download the driver from the server automatically if an admin istrator has loaded all appropriate drivers in the shared printer. A single logical printer can direct jobs to more than one port, creating a printer pool. A single physical printer (port) can be served by multiple logical printers, each of which can configure unique properties, drivers, settings, permissions, or monitor ing characteristics. Such a structure enables you to leverage printer hardware with incredible flexibility. Printers can be managed, installed, and printed to via the Web if Internet Printing has been installed and enabled on the print server. Event logs and performance counters allow you to monitor printers for potential signals of trouble, and for utilization statistics.
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