Howto debug a dll loaded at runtime?

[Fabio Cannizzo]

I load an assembly DLL dynamically using
System.AppDomai n.CurrentDomain .Load(... ).
I create the istance of an object contained in the assembly and invoke one
of its method.
How can I make the debugger stop within the code of this DLL?

If my question is not clear, please have a look below... Thanks a lot


In ClassLibrary1.d ll I have

interface MyInterface {
int MyMethod();
}

In ClassLibrary2.d ll I have

public MyClass : MyInterface {
int MyMethod() { retrun 10; );
}


In Main.exe I have

.....
FileStream fs = new FileStream(@"Cl assLibrary2.dll ", FileMode.Open);
byte[] buffer = new byte[(int) fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
Assembly asm = System.AppDomai n.CurrentDomain .Load( buffer ); // load the
assembly
Type[] tp = asm.GetTypes();
foreach ( Type t in tp )
if (null != t.GetInterface( "MyInterfac e" ) ) { // scan for types
which implement MyInterface
// call default constructor with no parameters
Object obj = t.InvokeMember( null, BindingFlags.De claredOnly |
BindingFlags.Pu blic | BindingFlags.In stance | BindingFlags.Cr eateInstance,
null, null, null);
// invole a method
int i = (int) ((MyInterface)o bj).MyMethod(); // I would like the
debugger to stop during the execution of MyMethod. How can I do???
}
.....

[Joshua Flanagan]

Re: Howto debug a dll loaded at runtime?

Assuming you have the ClassLibrary2.d ll project loaded in Visual Studio
(along with ClassLibrary1), you should be able to step into the code if
you put a breakpoint on the call to MyMethod.

Curious - do you need to load the assembly as a stream?

If not, your code might be simpler load the assembly like this:

Assembly asm = Assembly.Load(" ClassLibrary2") ;



Joshua Flanagan

http://flimflan.com/blog

[Fabio Cannizzo]

Re: Howto debug a dll loaded at runtime?

Hi Joshua.

Thanks for the tip. I had to use AssemblyLoadFil e(..) instead of
Assembly.Load() , but now it seems to work (also the debugger).

Regards,
Fabio

"Joshua Flanagan" <josh@msnews.co m> wrote in message
news:%23TAH$JeA GHA.984@tk2msft ngp13.phx.gbl.. .[color=blue]
> Assuming you have the ClassLibrary2.d ll project loaded in Visual Studio
> (along with ClassLibrary1), you should be able to step into the code if
> you put a breakpoint on the call to MyMethod.
>
> Curious - do you need to load the assembly as a stream?
>
> If not, your code might be simpler load the assembly like this:
>
> Assembly asm = Assembly.Load(" ClassLibrary2") ;
>
>
>
> Joshua Flanagan
> http://flimflan.com/blog[/color]