CODEWITHSUNDEEP
c#.netdebugging
Ansis Māliņš
Ansis Māliņš

Reputation: 1712

How do I wrap Debugger.Break nicely?

Debug.Assert shows a confusing message box, but I want it to just break if condition is false.

The following works, but is tedious to write:

#if DEBUG
    if (!condition) Debugger.Break()
#endif

So I wrote the following function:

public class Util
{
    [Conditional("DEBUG")]
    public static void Assert(bool condition)
    {
        if (!condition) Debugger.Break();
    }
}

It works, but it breaks in the function and not at its call site. How do I make my Assert function behave like the Break function it wraps?

Upvotes: 2

Views: 197

Answers (2)

Tom
Tom

Reputation: 799

The DebuggerStepThrough attribute as mentioned in Patrick Hofman's answer did not work in my case. I am using Visual Studio 2022, maybe they changed how the debugger handles those attributes.

I had to use the DebuggerHidden attribute. It works with and without enabling Just my code.

Upvotes: 1

Patrick Hofman
Patrick Hofman

Reputation: 156968

Matze's comment is correct. Decorating your Assert method with the DebuggerStepThrough attribute sets the break point on the call of the Assert method.

Test program:

[DebuggerStepThrough]
public static void Assert(bool condition)
{
    if (!condition) Debugger.Break();
}

static void Main(string[] args)
{
    Assert(false); // <-- break point here

    Console.ReadKey();
}

Note that you have to turn Just my code on. Go to Options -> Debugging -> Enable Just My Code.

Upvotes: 4

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