Access Error Handling Module
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Ms Access Error Handling Best Practice
2010 Contribute to this content Use GitHub to suggest and submit changes. See our guidelines for contributing to VBA documentation. Errors and Error Handling When you are programming an application, you need to consider what happens when an error occurs. An error can occur in your application for one of two of reasons. First, some condition at the time the application is running makes otherwise valid code fail. For example, if your code attempts to open a table that the user has deleted, an error occurs. Second, your code may contain improper logic that prevents it from doing what you intended. For example, an error occurs if your code attempts to divide a value by zero. If you have not implemented error handling, Visual Basic halts execution and displays an error message when an error occurs in your code. The user of your application is likely to be confused and frustrated when this happens. You can forestall many problems by including thorough error-handling routi
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Microsoft Access Error Handling
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Advertisment Error Handling (Global) error handling in access macro Options Error Handling (Global) This article describes How-To content for a given task Related Content: Error Handling <-- see for more links on handling errors At some point in the journey to https://msdn.microsoft.com/en-us/library/office/ff193267.aspx learn and master Access, the generation our VBA code will supercede the use of certain wizards. One of those will eventually be the VBA Code Wizard. Although it is a quick method of generating a procedural ‘shell’, it’s auto-generated error handling can be more robust when we more effectively manage any errors that may occur. Writing error handling routines for each and every procedure can http://www.utteraccess.com/wiki/index.php/Error_Handling_(Global) be tedious. The code example(s) and demo app of this tutorial can provide a way to trap and manage unexpected errors. But then, what other kind of error is there? (Random, undocumented features, to be sure!) A ‘global’ approach to error handling is the thrust of this discussion, where we will employ ‘global’ variables to assist in the management of the information collected during an error trapping process. We will also explore the primary Error Handling routine(s)/module in detail and how the ‘global’ variables play their part in passing a procedure’s error info to the primary routine. Then, once the primary routine has been given a procedural call and error info, we will be able to present a user with an on-screen message, a text-based error file and/or the ability to email the error to a developer and/or application administrator. Also demonstrated will be how to bring these Global Error Handling routines into your working Access application. Contents 1 Discussion 2 The Variables 3 The Code 4 The Demo 5 The File: [edit] Discussion Always backup any database before making changes of any kind. The primary module, modErrorHandler, contains both the global variable dehere for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring http://stackoverflow.com/questions/27828316/error-handling-in-a-class-module-function developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error handling in a Class Module Function up vote 4 down vote favorite I have several Class Modules in my Workbook. One of public functions in Class Module 1 relies on data error handling from a function in Class Module 2, this happens four times. In the event that the object is missing from Class 2 the program crashes (as expected). I am having difficulty debugging the code properly as it seems that I can only exit the program from the main subroutine. I would prefer to kill the program from the Class function, but I don't know if that is possible (we can squash this here if it is). I am currently access error handling using On Error statements in the main subroutine, but these don't execute in a timely manner because the function in Class 1 gets data from Class 2 four times. Class Module 1 Function Function oload(ByVal pload As Double, ByVal cord As cCordCol, ByVal grid As cGridCol) ' cord is a scripting.dictionary of Class Module Objects (cCord) ' grid is a scripting.dictionary of Class Module Objects (cGrid) n1 = grid.Item(pg1).toGlobal(cord) n2 = grid.Item(pg2).toGlobal(cord) n3 = grid.Item(pg3).toGlobal(cord) n4 = grid.Item(pg4).toGlobal(cord) ' do something here oload = sum_Ploads End Function Above the n1 thru n4 is where I am calling on the public function of Class Module 2. Below is the Class Module 2 Function Function toGlobal(ByVal cord As cCordCol) On Error Resume Next ctype = cord.Item(Me.cord1).sys ' Missing Coordinate System Error If Err.Number <> 0 Then i = MsgBox("The definition of Coordinate " & Me.cord1 & " was missing from the Bulk Data " & Chr(10) & _ "File. Include this Coord in the .bdf and re-execute the program.", vbOKOnly, "Runtime Error") ' *** TERMINATE MAIN SUBROUTING HERE *** End If This will raise a message box indicating that an object was missing, specifically the (me.cord1) part - this is an item in a scripting.dictionary. I want to terminate the program here. The main subroutine (greatly reduced) is here: Sub main() ' lookup Element ID, Calc OLOAD, Sum Load Set OLOAD On Error GoTo PROC_ERR If dict_quad.Exists(EID) The