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excel vba on error continue Crescent City, Illinois

It's habit I can't break :P End Sub A copy/paste of the code above may not work right out of the gate, but should definitely give you the gist. I prefer the use of Blocks 3 & 4 over 2 only because of a dislike of the GOTO statement; I generally use the Block4 method. Well my routines got more or less quite long, but I've splitted it in about 10 Modules and tried to decrease the sizes of the routines... 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...

Custom VBA errors In some cases you will want to raise a custom error. For example, if you are creating a binary arithmetic expression that expects a second operand after the operator, you would receive an error. Otherwise, your code will enter an endless loop, jumping between the line of code that caused the error and the error handling block. Error handling.

Before an error occurs, you would indicate to the compiler where to go if an error occurs. This allows you to skip a section of code if an error occurs. Code: Option Explicit Sub Sample() Dim i As Long For i = 7 To Range("Count").Value On Error Resume Next Workbooks.Open Cells(i, 1).Text If Err.Number <> 0 Then Err.Clear Else On Error Though Raise can be used in place of the Error statement, but because errors generated by using the Error statement give richer information in the Err object, Raise is useful to

Where the error occurrs in a called procedure, control is returned to the last calling statement in the procedure containing the error handler.   Resume Next: Where the error occurrs in The next (highlighted) statement will be either the MsgBox or the following statement. The best practice for error handling is putting all handlers (jump labels) at the end of your code block - whether its a VBA Sub or Function. In VBE, click Options on the Tools Menu, select the General tab in the dialog box.

This has been explained & illustrated in Example 4 above.   Arguments of Raise Method: The Number argument is the error's number. Dev centers Windows Office Visual Studio Microsoft Azure More... Please share this page on Google+ 3/6 Completed! This helps you to debug the code.

The following example shows how these features can be used with the existing exception handling support: VB Copy On Error GoTo Handler Throw New DivideByZeroException() Handler: If (TypeOf Err.GetException() Is DivideByZeroException) How to add an sObject to a sublislist? Each time the error handler passes control back to a calling procedure, that procedure becomes the current procedure. Only the Number argument is necessary to specify in the Raise Method, and all other arguments are optional.

Debug.Print "Continue execution" Exit Sub ErrorHandler: LogError Err.Description Resume Next End Sub Related Posts Web Scraping Kit – use Excel to get that Web... As to your objection to this format "jumping around", A) it's what VBA programmers expect, as stated previously, & B) your routines should be short enough that it's not far to In this case Sheet does not exist - active Workbook contains only 3 sheets) MsgBox Sheets(7).Name 'Run-time error '1004': Application-defined or object-defined error (invalid reference). For example, you can write an arithmetic operation and examine its result.

Last edited by Richard Schollar; Feb 18th, 2011 at 12:20 PM. This allows you to make sure you don't lose track of any errors that might have occurred in your Workbooks although you might not want to handle these errors directly. Block 1 is, IMHO, bad practice. To identify the application that caused an error, you can inquire about the value of this property.

To set Err.Number for your custom error, add the number you select as an error code to the vbObjectError constant (-2147221504) to ensure your custom error number is not in conflict Easy enough to correct by setting the wb to Nothing before the next iteration. Logical fallacy: X is bad, Y is worse, thus X is not bad (Somewhat) generalised mean value theorem Are there any rules or guidelines about designing a flag? What is a type system?

The Description argument describes the error providing additional information about it. In Excel VBA, you can use the For Each Next loop for this. Some other errors depend on the platform that is running the application (the operating system, the processor, the version of the application, the (available) memory, etc). The Description property returns a zero-length string ("") if no run-time error has occurred or ErrorNumber is 0.

Can an ATCo refuse to give service to an aircraft based on moral grounds? Error Handling With Multiple Procedures Every procedure need not have a error code. The more checking you do before the real work of your application begins, the more stable your application will be. This indicates that when a run time error occurs VBA should display its standard run time error message box, allowing you to enter the code in debug mode or to terminate

maybe I'll implement it :-) BTW The logo is marvelous :D I'll keep you posted if I need one like this –skofgar May 18 '11 at 9:10 add a comment| up For example, you can create a car rental application that is able to display pictures 100% of the time on your computer while locating them from the E: drive. Share it with others Like this thread? Want to raise a custom error?

For this you will use On Error statements or Resume statements. For one thing, if a new error is thrown while there's an Error condition in effect you will not get an opportunity to handle it (unless you're calling from a routine Where as in the DIR case, all your relevant code is sandwiched between IF/EndIF and you will not require additional checks. The Err object's Raise method is useful to regenerate an original error in a vba procedure - refer the section on Error Object for details on the Raise Method.

Only one error handler is enabled at any given time, and VBA will behave according to the enabled error handler. It doesn't seem right having the Error block in an IF statement unrelated to Errors. Select Case Err.Number ' Evaluate error number. This statement tells the VBA program to ignore the error and resume the execution with the next line of code.

Source - the source of the error - usually your VBAProject. So your code would be modified to On Error Resume Next Set picture = ActiveSheet.Pictures.Insert(ThisWorkbook.Path & "\Images\" & picname & ".jpg") On Error GoTo 0 share|improve this answer edited Jan 17