Error Handling Using Vbscript
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Error Handling In Vbscript Examples
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Error Handling In Vbscript Tutorial
favorite 13 I want to use VBScript to catch errors and log them (ie on error "log something") then resume the next line of the script. For example, On Error Resume Next 'Do Step 1 'Do Step 2 'Do Step 3 When an error occurs on step 1, I want it to log that error (or perform other custom functions with it) then resume at step 2. Is this vbscript trap error possible? and how can I implement it? EDIT: Can I do something like this? On Error Resume myErrCatch 'Do step 1 'Do step 2 'Do step 3 myErrCatch: 'log error Resume Next vbscript error-handling share|improve this question edited Oct 1 '08 at 14:13 asked Oct 1 '08 at 14:04 apandit 2,50111831 1 Dylan's response is about as good as VB gets in the Error handling department. This is why I always used Javascript when I could get away with it. –wcm Oct 1 '08 at 14:23 add a comment| 2 Answers 2 active oldest votes up vote 102 down vote accepted VBScript has no notion of throwing or catching exceptions, but the runtime provides a global Err object that contains the reuslts of the last operation performed. You have to explicitly check whether the Err.Number property is non-zero after each operation. On Error Resume Next DoStep1 If Err.Number <> 0 Then WScript.Echo "Error in DoStep1: " & Err.Description Err.Clear End If DoStep2 If Err.Number <> 0 Then WScript.Echo "Error in DoStop2:" & Err.Description Err.Clear End If 'If you no longer want to continue following an error after that block's completed, 'call this. On Error Goto 0 The "On Error Goto [label]" synta
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Vbscript On Error Resume Next
Documentation APIs and reference Dev centers Retired content Samples We’re sorry. vbscript on error continue The content you requested has been removed. You’ll be auto redirected in 1 second. VBScript VBScript Language Reference vbscript clear error Objects and Collections Objects and Collections Err Object (VBScript) Err Object (VBScript) Err Object (VBScript) Class Object Debug Object Err Object (VBScript) Err Object Properties and Methods Match http://stackoverflow.com/questions/157747/vbscript-using-error-handling Object Matches Collection Regular Expression (RegExp) Object SubMatches Collection TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Err Object (VBScript) Contains information about run-time errors. Accepts the Raise and Clear methods for generating and clearing run-time errors.RemarksThe https://msdn.microsoft.com/en-us/library/sbf5ze0e(v=vs.84).aspx Err object is an intrinsic object with global scope — there is no need to create an instance of it in your code. The properties of the Err object are set by the generator of an error — Visual Basic, an Automation object, or the VBScript programmer.The default property of the Err object is Number. Err.Number contains an integer and can be used by an Automation object to return an SCODE.When a run-time error occurs, the properties of the Err object are filled with information that uniquely identifies the error and information that can be used to handle it. To generate a run-time error in your code, use the Raise method.The Err object's properties are reset to zero or zero-length strings ("") after an On Error Resume Next statement. The Clear method can be used to explicitly reset Err.The following example illustrates use of the Err object: Copy On Error Resume Next Err.Raise 6 ' Raise an overflow error. MsgBox ("Error # " & CStr(Err.Number) & " " & Err.Description) Err.Clear ' Cl
VBScript in a Nutshell by Matt Childs... Published by O'Reilly Media, Inc. VBScript in a Nutshell Preface Why This Book? Who Should Read This Book? How This Book Should Be Used How This Book Is https://www.safaribooksonline.com/library/view/vbscript-in-a/1565927206/ch04s02.html Structured Conventions in This Book How To Contact Us I. The Basics 1. Introduction 2. Program Structure 3. Data Types and Variables 4. Error Handling and Debugging 5. VBScript with Active Server Pages 6. Programming Outlook Forms 7. Windows Script Host 8. VBScript with Internet Explorer II. Reference 9. The Language Reference III. Appendixes A. Language Elements by Category B. VBScript Constants C. Operators Index Colophon Error Handling Error handling does not involve error handling finding errors in your scripts. Instead, use error handling techniques to allow your program to continue executing even though a potentially fatal error has occurred. Ordinarily, all runtime errors that are generated by the VBScript engine are fatal, since execution of the current script is halted when the error occurs. Error handling allows you to inform the user of the problem and either halt execution of the program or, if it is prudent, continue vbscript error handling executing the program.The On Error Resume Next StatementThere are two main elements to error handling in VBScript. The first is the On Error statement, which informs the VBScript engine of your intention to handle errors yourself, rather than to allow the VBScript engine to display a typically uninformative error message and halt the program. This is done by inserting a statement like the following at the start of a procedure:On Error Resume NextThis tells the VBScript engine that, should an error occur, you want it to continue executing the program starting with the line of code which directly follows the line in which the error occurred. For example, in the simple WSH script:On Error Resume Next x = 10 y = 0 z = x / y Alert za “Cannot divide by Zero” error is generated on the fourth line of code because the value of y is 0. But because you’ve placed the On Error statement in line 1, program execution continues with line 5. The problem with this is that when an error is generated, the user is unaware of it; the only indication that an error has occurred is the blank Alert box (from line 5) that’s displayed for the user.TipA particular On Error statement is valid until another On Error statement in the line of execut