Debugging a Class

Is there a way to test and debug a class without plugging it into an app using Visual Studio?

For example, there is this

class MyApp


    public void Test(string yourString

Sorta like debugging but you don't have to compile it to see if it works.
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The only way I can suggest would be within the same solution create another Project called Debugger and use it to debug the class, that way you can watch runtime variables and use breakpoints within you class library.

I am guessing that you are create a project that will generate a .dll and you want to debug that.

Once you create another new project you will have to goto the solution properties and change the startup project.
JoshDaleAuthor Commented:
Yea something like that. I was thinking of a feature where you could change the value of variables at runtime. Sorta like writing an application while it is running and watching the output.
JoshDale -

You'll always have to compile the class to see if it works.  What kind of class are you working on?  Is it a console app?  Why not use VS?
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Daniel Van Der WerkenIndependent ConsultantCommented:
You have to compile it.  In Visual Studio, it's possible to slightly change some things via the debugger, for example, memory.  However, this doesn't work well with other things, like strings.

Behind the scenes, the runtime creates the memory allocations based on the way the program is written. You don't want to try to "dynamically" change a string lenght from one to another bypassing the correct route or you'll overwrite the wrong memory addresses.
You should look into Visual Studio 2005. It has a new feature allowing you break on a statement, make certain allowable changes, and manually adjust
the next instruction pointer if necessary.
It creates a dramatic improvement in debugging time.


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JoshDaleAuthor Commented:
Nice, I was just playing with it on the 2005 beta, I didn't know it was there. It is close enough to what I was looking for, thanks.
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