'loop will run only for i = 1 because iTotal would have exceeded 3 by then & the condition (Until iTotal > 3) is tested before the Do loop startsĬondition is tested at the end of the loop, for a Do.Until Loop: 'The condition (iTotal > 3) is tested at the start of the loop, for a Do.Until Loop 'the code runs once more after testing the condition of i > 2 so as to reach the value of 3Įxample 2: Using MsgBox to test dynamic variable values for a Do.Until loopĬondition is tested at the start of the loop, for a Do.Until Loop: 'using MsgBox to test variable values for a Do.Until loop Example 2 shows using the MsgBox being specifically useful for a Do Loop in determining the variance between when a condition is tested at the Start or at the End of the loop.Įxample 1: Using MsgBox to test variable values for a Do.Until loop Below examples show how to use MsgBox to test dynamic variable values as they change while the code is executed. Display a message box to get the value of a variable - MsgBox VariableName - after the code line which you want to validate, and then remove this after finishing writing the macro.
Use a message box immediately after the code line wherein the variable assumes a value, to check how the procedure runs with the dynamically changing variable values. Using a Message Box to check the changing values of a variable, is one of the most basic and often used methods while writing macro code. VBA provides numerous Debugging tools to troubleshoot problems at the development stage, and the ability to add error handling routines while writing macro code, and to provide quick fixes when users encounter errors during execution. Developers need to identify and pinpoint mistakes while writing code and be able to make rectifications quickly.
Excel VBA Debugging Tools in Visual Basic Editor - Breakpoints & Break Mode, Stepping Through Code, Debugging Viewsĭebugging is a very important aspect in VBA Programming.
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