Microsoft Excel Visual Basic Error Handling
Contents |
soon) Ruby (coming soon) Getting Started Code Samples Resources Patterns and Practices App Registration Tool Events Podcasts Training API Sandbox Videos Documentation Office Add-ins Office Add-in Availability Office Add-ins Changelog Microsoft Graph API Office 365 Connectors Office vba error handling best practices 365 REST APIs SharePoint Add-ins Office UI Fabric Submit to the Office Store All excel vba try catch Documentation https://www.yammer.com/ http://feeds.feedburner.com/office/fmNx How do I... Miscellaneous Maintenance Maintenance Handle Run-Time Errors in VBA Handle Run-Time Errors in VBA Handle Run-Time on error goto vba Errors in VBA Compact and Repair a Database Recover Tables Deleted from a Database Handle Run-Time Errors in VBA TOC Collapse the table of content Expand the table of content This documentation is archived and
Vba Error Handling In Loop
is not being maintained. This documentation is archived and is not being maintained. Handle Run-Time Errors in VBA Office 2013 and later Other Versions Office 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 vba error numbers 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 routines in your code to handle any error that may occur. When adding error handling to a procedure, you should consider how the procedure will route execution when an error occurs. The first step in routing execution to an error handler is to enable an error handler by including some form of the On Error statement within the procedure. The On Error statement directs execution in event of an error. If there is no On Error statement, Visual Basic simply halts execution and displays an error message when an error occurs. When
the wrong time. The application may crash. A calculation may produce unexpected results, etc. You can predict some of these effects and take appropriate actions. Some other problems on error goto line are not under your control. Fortunately, both Microsoft Excel and the VBA language provide
Vba On Error Exit Sub
various tools or means of dealing with errors. Practical Learning:Introducing Error Handling Open the Georgetown Dry Cleaning Services1 spreadsheet and click
Vba Error Handling Display Message
the Employees tab Click the Payroll tab Click the TimeSheet tab To save the workbook and prepare it for code, press F12 Specify the folder as (My) Documents In the Save As Type https://msdn.microsoft.com/en-us/library/office/ff193267.aspx combo box, select Excel Macro-Enabled Workbook Click Save Introduction to Handling Errors To deal with errors in your code, the Visual Basic language provides various techniques. One way you can do this is to prepare your code for errors. When an error occurs, you would present a message to the user to make him/her aware of the issue (the error). To prepare a message, you create a section http://www.functionx.com/vbaexcel/Lesson26.htm of code in the procedure where the error would occur. To start that section, you create a label. Here is an example: Private Sub cmdCalculate_Click() ThereWasBadCalculation: End Sub After (under) the label, you can specify your message. Most of the time, you formulate the message using a message box. Here is an example: Private Sub cmdCalculate_Click() ThereWasBadCalculation: MsgBox "There was a problem when performing the calculation" End Sub If you simply create a label and its message like this, its section would always execute: Private Sub cmdCalculate_Click() Dim HourlySalary As Double, WeeklyTime As Double Dim WeeklySalary As Double ' One of these two lines could produce an error, such as ' if the user types an invalid number HourlySalary = CDbl(txtHourlySalary) WeeklyTime = CDbl(txtWeeklyTime) ' If there was an error, the flow would jump to the label WeeklySalary = HourlySalary * WeeklyTime txtWeeklySalary = FormatNumber(WeeklySalary) ThereWasBadCalculation: MsgBox "There was a problem when performing the calculation" End Sub To avoid this, you should find a way to interrupt the flow of the program before the label section. One way you can do this is to add a line marked Exit Sub before the label. This would be done as follows: Private Sub cmdCalculate_Click() Dim H
generally put more focus on the coding part and getting the desired result but during this process we forget an important thing i.e. Error handling. http://www.exceltrick.com/formulas_macros/vba-on-error-statement/ Error handling is an important part of every code and VBA On Error Statement is an easy way for handling unexpected exceptions in Excel Macros. A well written macro is one that includes proper exception handling routines to catch and tackle every possible error. Error handling is important because in case of any unexpected exceptions your code doesn’t break. Even if any fatal unexpected error handling error occurs in the code then also you should ensure that the code should terminate gracefully. Definition of VBA On Error Statement: On Error statement instructs VBA Compiler, what to do in case any runtime exception are thrown. 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