how to create barcode in c#.net 10: Debugging and Handling Errors in Microsoft Office

Make UPC-A Supplement 2 in Microsoft Office 10: Debugging and Handling Errors

10: Debugging and Handling Errors
UPC-A Supplement 5 Printer In C#.NET
Using Barcode creator for .NET framework Control to generate, create UPC-A Supplement 5 image in Visual Studio .NET applications.
Making UPC-A Supplement 5 In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create Universal Product Code version A image in ASP.NET applications.
Figure 10-4 The script displays this alert if the Finder can t find the file it s supposed to delete
UPC Code Generation In .NET
Using Barcode creator for VS .NET Control to generate, create UCC - 12 image in Visual Studio .NET applications.
Creating GS1 - 12 In Visual Basic .NET
Using Barcode encoder for VS .NET Control to generate, create UCC - 12 image in .NET applications.
If the if statement isn t true, the else if statement runs This statement checks to see whether myErrorNumber is equal to 45, the error that means the Finder couldn t delete the file because it was locked If this is the error number, the script displays an alert (see Figure 10-5) telling the user what is amiss and asking them to unlock the file If the else if statement isn t true either, the else statement displays an alert saying that the script cannot delete the file and showing the error message for the error that has occurred
EAN / UCC - 14 Generation In .NET
Using Barcode printer for Reporting Service Control to generate, create UCC.EAN - 128 image in Reporting Service applications.
Painting EAN 13 In None
Using Barcode generation for Online Control to generate, create EAN13 image in Online applications.
try tell the application "Finder" delete file "Picture 5" of desktop end tell on error myErrorMessage number myErrorNumber if myErrorNumber is equal to -1728 then display alert "Finder can t find the file" message "Please check that the file name is correct" else if myErrorNumber is equal to -45 then display alert "The file is locked" message "Please unlock the file and run this script again" else display alert "Cannot delete the file" message "The following error occurred:" & return & return & myErrorMessage end if end try
Bar Code Printer In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Scanning GS1 - 13 In Visual Basic .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
Figure 10-5 The script displays this alert if the file is locked
Generate Data Matrix ECC200 In None
Using Barcode printer for Online Control to generate, create Data Matrix image in Online applications.
Barcode Maker In C#
Using Barcode generator for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
AppleScript: A Beginner s Guide
Code 128B Generator In Objective-C
Using Barcode creation for iPhone Control to generate, create Code 128 image in iPhone applications.
Decode UPC Symbol In Visual Basic .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Try This
Making Barcode In Java
Using Barcode creation for BIRT Control to generate, create bar code image in Eclipse BIRT applications.
EAN / UCC - 13 Generator In None
Using Barcode maker for Software Control to generate, create EAN13 image in Software applications.
Building an Error Handler
Draw EAN 128 In Visual Basic .NET
Using Barcode creation for Visual Studio .NET Control to generate, create GS1-128 image in Visual Studio .NET applications.
Decoding Code 3 Of 9 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
In this example, you create the error handler shown in the previous section but adapt it to work with a file on your Mac Follow these steps:
Bar Code Encoder In Java
Using Barcode printer for Java Control to generate, create bar code image in Java applications.
Code 128 Encoder In None
Using Barcode printer for Office Word Control to generate, create Code 128 image in Office Word applications.
1 In AppleScript Editor, press z-N or choose File | New to create a new script 2 Type the code shown in the previous section 3 Edit the delete file statement near the beginning so that it works with a file in your file
Generating Bar Code In Java
Using Barcode drawer for Android Control to generate, create barcode image in Android applications.
Making Data Matrix In Java
Using Barcode drawer for Android Control to generate, create ECC200 image in Android applications.
system that you re prepared to delete
Unless you ve recently emptied the Trash, the easiest way to pick a victim is to open the Trash and then drag a file from it to your Desktop If the Trash is empty, open a Finder window to a folder that contains a blameless file Press z-D to duplicate the file, and then drag the duplicate to your Desktop so that you ll remember to get rid of it later if the script doesn t trash it for you
4 Lock the file on your Desktop Click the file, press z-I to display the Info window, and
then select the Locked check box Leave the Info window open for the time being
5 Press z-R or click the Run button on the toolbar to run the script Because the file is
locked, AppleScript cannot delete it, so error 45 occurs, and the alert warning that the file is locked appears
6 In the Info window, clear the Locked check box to unlock the file, and then close the
Info window
7 Press z-R or click the Run button on the toolbar to run the script again This time, the
script deletes the file, and you will see it disappear from your Desktop
8 Press z-R or click the Run button on the toolbar to run the script a third time Because
the file is no longer there, error 1728 occurs, and AppleScript displays the alert warning you that Finder cannot find the file
9 Save the script under a name of your choice
Finding Out Which Errors You Need
To deal effectively with errors in your scripts, you need to find out which errors are likely to occur, and then build handlers for them
10: Debugging and Handling Errors
Handling a Cancel Button in a Dialog Box
The error that s most likely to occur in any script that uses a dialog box is error 128 As you saw earlier in this chapter, this is the error that occurs when the user clicks the Cancel button, and it has special status: AppleScript doesn t display an error dialog box, the way it does for other errors, but simply stops running the code So the user gets to see neither the error number nor its message, User canceled, which is laconic but mostly unambiguous To prevent the click of a Cancel button from stopping a script in its tracks, put the command for the dialog box (the display dialog command, the display alert command, the choose from list command, or whatever) inside a try block Include an on error number 128 statement to test whether the user has clicked the Cancel button, and then take action accordingly The following example shows a try block set up this way The display dialog statement craftily includes only a Cancel button, so that s all the user has to click When error 128 occurs, the on error number 128 error handler catches it You can then take whatever action is necessary; in the example, the script simply displays a dialog box with the information that the user clicked the Cancel button
try display dialog "Cancel me!" buttons {"Cancel"} on error number -128 -- take other actions here instead of display dialog display dialog "User clicked the Cancel button" buttons {"OK"} end try
Copyright © OnBarcode.com . All rights reserved.