VS.NET Debugging: Variable watch

Posted on 2004-04-21
Medium Priority
Last Modified: 2012-06-27
I know in VisualAge for Java I used to be able to put a breakpoint on a variable...not at a particular point in the code, but in a debugging window, and the code would break as soon as that variable was changed, or became a certain value.. (useful for loops if you want to break a loop when it hits 100 iterations etc, or a boolean field validating to true).

yes.. I know I could just put a breakpoint on this line:   If var = true then var = true    or something like that..but you won't get any points for an answer like that.

Does anyone know? Even a work-around would be somewhat satisfactory.. (Ie i tried declaring the bool value 'WithEvents' but it wouldn't let me).

Question by:bswiftly
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LVL 28

Accepted Solution

mmarinov earned 120 total points
ID: 10878472

Author Comment

ID: 10878530

I remember trying this method before and it says that VB, or C# don't support variable breakpoints.

Does anyone have a work around or know how to declare a variable with events?
LVL 28

Expert Comment

ID: 10878690
actually i've tested it right know and it works fine with c# :)
the only special think is that when you set a break point in a function you can set it on the first function's line


Author Comment

ID: 10878961
well I am in a VB environment, and i entered in C# (just to see if i'd get the error too.. cuz i'm always looking for a reason to change to C#).

Alright.. you got it to work on a function..thats great.  and easy.  

try this:
declare  a boolean value.  
modify it in a few different places in your code...
set up a breakpoint not on a particular line of code, or at the entry point of a particular method, but when the boolean variable changes its vlaue.


Assisted Solution

Z_Beeblebrox earned 80 total points
ID: 10881396

The VB.Net debugger is very powerful. If you add a breakpoint, you can right click on the brown ball, and select breakpoint properties. From there, you can set the break point to only fire when a certain condition is true (e.g. a loop counter is a certain value) or when the break point has been hit a certain number of times (also useful for a loop!). That should suffice to meet  at least some of your requirements. Unfortunately, it doesn't do the variable watch thing that VB6 does which is very useful.


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