Was hoping to avoid this but here is a more complex way to try.
First define a ResolveEventHandler in the class where you are doing the
loading. It would look something like the following. Sorry for ugly
look. This UseNet Reader is wrapping stuff
private ResolveEventHandler resolveEventHandler;
Then somewhere before you try to load add a handler. Something like this.
resolveEventHandler = new ResolveEventHandler(AssemblyResolver);
Thread.GetDomain().AssemblyResolve += resolveEventHandler;
Then create a resolver method something like this.
In my case i had a command line argument to specify
additional directories where to search for support
dlls. So the handler will also search there.
public Assembly AssemblyResolver(Object sender,ResolveEventArgs args)
{
String path;
// try looking in same directory as the original one first
// assembly is a class variable containing the starting loaded
// assembly
// assemblyNameToResolve is a class string variable.
path=assembly.Location.Substring(0,assembly.Locati on.LastIndexOf("\\") + 1);
assemblyNameToResolve = args.Name;
if ((assemblyNameToResolve.IndexOf(",") != -1) &&
(assemblyNameToResolve.IndexOf("Culture") != -1))
assemblyNameToResolve=assemblyNameToResolve.Substr ing(0,assemblyNameToResolve.IndexOf(","));
// I had a collection of loaded assemblies.
// This check to see if i already loaded it and just
// return it if it was already loaded
Assembly assm = assembliesLookup[assemblyNameToResolve] as Assembly;
if (assm != null)
return(assm);
try
{
assm =
Assembly.LoadFrom(String.Concat(path,assemblyNameT oResolve,".dll"));
}
catch (Exception)
{
}
// if not found try looking in directories passed in
// as command line arguments
if (assm == null)
{
foreach (String assemblyPath in extAssemblyDirectory)
{
try
{
assm =
Assembly.LoadFrom(String.Concat(assemblyPath,assem blyNameToResolve,".dll"));
if (assm != null)
break;
}
catch (Exception)
{
}
}
}
if (assm == null)
throw(new Exception("Cant find assembly " +
assemblyNameToResolve));
// add to collection of already looked up assemblies
assembliesLookup.Add(assemblyNameToResolve,assm);
return(assm);
}
When done using the loading class add the following code to remove the
handler.
Thread.GetDomain().AssemblyResolve -= resolveEventHandler;
This should work because it did for me. Sorry for the ugliness because
of line wrap
Leon Lambert
Jozsef Bekes wrote:
Hi Leon,
thank you for the suggestion. I could not manage to make it work even with
the lines you suggested, but this might also be needed for making the stuff
run.
Thank you,
Jozsi
"Leon Lambert" <la******@inil.com> wrote in message
news:Or**************@TK2MSFTNGP09.phx.gbl...
Try this before you load and see if it helps.
String path = Path.GetDirectoryName(Path.GetFullPath(assemblyNam e));
#if VS2003
AppDomain.CurrentDomain.AppendPrivatePath(path);
#else
AppDomain.CurrentDomain.SetupInformation.PrivateBi nPath = path;
#endif
Hope it helps
Leon Lambert
Jozsef Bekes wrote:
Hi All,
I am trying to use reflection for getting all the classes from the dlls
of a software written by my company. I am using this line:
Assembly.LoadFile(s).GetTypes()
Gettypes fails, I guess because when one dll refers to another one of
mine, Reflection does not find that dll. This is what the exception
contains anyway. So I realized that I'd need to copy the dlls, or
register them to the GAC. And then I tried Reflector, and to my
amazement, everything was working fine! Then I tried some tricks, invoked
Assembly.LoadFile() for all the referenced dlls before trying GetTypes()
on the one in question, still no success. Does anyone have an idea how it
can be done without copying and GAC?
I appreciate all your answers.
Thanks,
Jozsi
