On Error Goto Line Number Vba
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Vba On Error Exit Sub
or line number. Remarks GoTo can branch only to lines within the procedure where it appears. My question is, how can I jump to a line number using GoTo? (I know how to jump to a label.) (Note: I'm asking this for curiosity's sake. I have no intention of actually using GoTo this way.) excel vba goto share|improve this question edited Apr 23 '15 at 18:57 niton 3,36051433 asked May 17 '13 at 1:18 TheIronKnuckle 2,83322137 4 I will not accept or upvote vba error handling best practices answers that try to get around things by labelling the individual lines with their line numbers well that's just how it's done! @TomCollins has your answer :) –Mat's Mug May 17 '13 at 3:05 2 Try the "what if..." approach to answering this question. Imagine if it did support just jumping to the Nth line. What would happen if you adding 1 line, even a blank line somewhere above it, or even accidentally added one? The entire code logic goes to pot. Gotos can be hard to follow code flow, let alone when they're going to non specific locations. –Deanna May 17 '13 at 7:45 Please stop tagging VBA questions as VB6. VB6 programmers really don't care about Excel macros. –Bob77 May 18 '13 at 17:54 add a comment| 4 Answers 4 active oldest votes up vote 17 down vote accepted I understand your dislike of the answer "start the line with a line number", but you can't argue with facts. That is exactly what they mean. The syntax of VBA/VB6 is designed to be backwards-compatible with the syntax of QuickBasic, and before that with the syntax of GW-Basic/MS-Basic, which dates to the late 1970's and even earlier: the original Dartmouth BASIC Language was created in the '60s. In MS-Basic, like in every other Basic implementation of the era, every line you added to a program had to start with a line number. The line number told the Basic interpreter two things: a) that
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. Error handling is an important part of every code and VBA On Error Statement is an easy way for
Vba Error Handling In Loop
handling unexpected exceptions in Excel Macros. A well written macro is one that includes proper exception handling
Err.number Vba
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 vba iferror any fatal unexpected 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 http://stackoverflow.com/questions/16599982/goto-line-number-in-vba of On Error Statement: Basically there are three types of On Error statement: On Error Goto 0 On Error Resume Next On Error Goto
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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 are not under your control. Fortunately, both Microsoft Excel and the VBA language provide various tools or means of dealing with errors. Practical Learning:Introducing Error Handling Open the Georgetown Dry Cleaning Services1 spreadsheet and click 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 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 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 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) WeeklyTi