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That could cause the error to repeat and enter an infinite loop. Make sure the routine you call the raiseCustomError has error handling in it ' ' ' Date: Name: Description: ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '03/26/2010 Ray Initial Creation '******************************************************************************************************************************** Option Explicit Const MICROSOFT_OFFSET = 512 This is why error handlers are usually at the bottom. Visual Basic also searches backward through the calls list for an enabled error handler when an error occurs within an active error handler.

Routing Execution When an Error Occurs An error handler specifies what happens within a procedure when an error occurs. When a program runs, to find out what type of error occurred, you can question the Number property of the Err object to find out whether the error that has just For example, using a Byte variable to assign a performed operation that produces a value the variable cannot hold As you may imagine, because run-time errors occur after the application has Case 6 ' Divide by zero error MsgBox("You attempted to divide by zero!") ' Insert code to handle this error Case Else ' Insert code to handle other situations here...

And what about "double-click"? This property holds a specific number to most errors that can occur to your program. Problems are divided in two broad categories. based on the Error number see example below: On Error GoTo ErrorHandler Dim x, y x = y / 0 'Divide by zero!

To determine whether additional ADO or DAO errors have occurred, check the Errors collection. Instead it routes execution to an error handler, if one exists. I am thinking it would help to direct the effort in case an error appears… Log in to Reply AnalystCave says: May 6, 2016 at 9:32 am Sure you can… but not Languages like C++ provide a code structure call Try/Catch that allows much more granularity and control.

Getting Information About an Error After execution has passed to the error-handling routine, your code must determine which error has occurred and address it. The Resumelabel statement returns execution to the line specified by the label argument. Specifically, set a global Boolean constant, as follows: Public Const gEnableErrorHandling As Boolean = False Then, run each call to the error-handling routine by the constant, like this: If gEnableErrorHandling Then Full Bio Contact See all of Susan's content Google+ × Full Bio Susan Sales Harkins is an IT consultant, specializing in desktop solutions.

Connect with: Subscribe / FollowWeekly Newsletter Email address: Tag Cloudadd-in array binary c#.net chart csv data data structure directory dropdown email Excel formula extract data file formula function Google html macro You can forestall many problems by including thorough error-handling routines in your code to handle any error that may occur. Exiting an error this way can be complex, so use care and be sure to thoroughly test your routines. If PayrollEmployeeNumber = "" Then ' ...

If the code causing the error is in a procedure with an On Error statement, error handling is as described in the above section. When an error occurs, you would present a message to the user to make him/her aware of the issue (the error). To get information about a particular error, you can use the properties and methods of the Err object. To programmatically display something, such as a string, in the Immediate window, the Debug object provides the Print method.

To use Erl, you must have line numbers added to your VBA (like they do in the above article). In most cases, after dealing with the error, you must find a way to continue with a normal flow of your program. The Error event procedure takes an integer argument, DataErr. surely it could have been done better, but I'm trying to improve it –skofgar May 19 '11 at 6:54 1 All good answers here, but +1 for the including ExitSub:

At some point, Microsoft will introduce their NET framework in to Office, and when this happens, VBA programmers will have at their disposal the language features of Try/Catch/Finally code structure that Syntax of On Error Statement: Basically there are three types of On Error statement: On Error Goto 0 On Error Resume Next On Error Goto

Recent PostsExcel Macro Recorder TutorialVBA VLOOKUP - Using VLOOKUP in VBAExcel Camera Tool - create an Image snapshot in ExcelExcel Count Cells with Text and Formula - Excel StatsHow to create And thanks for the example! Debugging is twice as hard as writing the code in the first place. Useful when using the Resume Next statement.

All the Error objects associated with a particular ADO or DAO operation are stored in the Errors collection, the lowest-level error being the first object in the collection and the highest-level To provide this information, under the line that starts the procedure, type an On Error GoTo expression followed by the name of the label where you created the message. First, some condition at the time the application is running makes otherwise valid code fail. After an error has occurred, to ask the compiler to proceed with the regular flow of the program, type the Resume keyword.

When the error handler is active and an error occurs, execution passes to the line specified by the label argument. You use the Resumelabel statement when you want to continue execution at another point in the procedure, specified by the label argument. End If Exit Sub ' Exit to avoid handler. There are three forms of the On Error statement: On Error GoTolabel, On Error GoTo 0, and On Error Resume Next.

Where else than after presenting the error message to the user? Clear - clear the current Error. The Err object provides you with all the information you need about Visual Basic errors. Using SQL in VBA on Excel.