"An unexpected error has occurred in your program." & _ Msg$ = msg$ & "Please notify the developer." Msg$ = "Macro cannot locate an essential file." Now you are in a position to revise your error handler to respond to this specific error (in this example the error number 1234): Therefore you are presented with the message box from which you learn the error number and the nature of the error.
EXCEL VBA ON ERROR GOTO RESUME CODE
Let’s assume you have wrapped a new procedure in the error-handling code described above. Resume procDone instructs the macro to resume executing at the procDone label. Err.Description is a description of that error.Err.Number is a unique identification number for the error object drawn from VBA’s library of errors.MsgBox Err.Number & ": " & Err.Description sends a message box to the screen displaying information about the nature of the error: In the event of an error, the On Error Goto errHandler statement instructs the procedure to stop executing your code at the point at which the error occurs and to pick it up again at the errHandler label. Information about any error that occurs subsequent to this statement is stored in a VBA error object named Err. The On Error statement turns on error trapping. MsgBox Err.Number & ": " & Err.Description This is the skeleton code for a simple way: There are a number of ways in which you might choose to include code for error handling in a macro. Your users could be faced with loss of changes they have made to their data or application, or with their application freezing and refusing to function at all.
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EXCEL VBA ON ERROR GOTO RESUME HOW TO
Introducing error trapping in all your VBA procedures puts you in control of errors and in a position to direct the code to make appropriate responses.īy managing errors you can spare your users from being thrown into a panic at not knowing how to respond to threatening looking error messages, like this one.įailure to include error handling may result in unwelcome and undesirable behaviour of the software.
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(e) How to Include Error Handling in VBA Codeįor Microsoft ® Access, Excel and Word, how to include error handling in VBA code to intercept and process errors if and when they occur.Įrrors occur during the execution of a VBA function or sub procedure due to a variety of reasons, including the use of incorrect code and the macro running under circumstances for which it was not intended.