RE: [Mono-list] Using Exceptions with external Plugins
[EMAIL PROTECTED] wrote:
Cool! Thanks!
Now, how can I get sure that the InnerException is a
XmlRpcFaultException or a XmlRpcMissedSomething?, I'm trying with this:
} catch(TargetInvocationException e) {
if(e.InnerException.GetType().ToString() ==
CookComputing.XmlRpc.XmlRpcFaultException) {
Console.WriteLine(yes);
}
But I don't think it's the correct way/code, any suggestions?
You might want to take advantage of the fact that Type.InvokeMember actually
performs virtual dispatch based on the runtime type of the object *AND* all
of the parameters, IE, it performs double/triple/ntuple dispatch.
That means the following will work the way you want it to:
catch( TargetInvocationException e )
{
Type t = this.GetType();
t.InvokeMember( HandleException, BindingFlags.InvokeMethod |
BindingFlags.Instance | BindingFlags.NonPublic, null,
this, new object[]{ e } );
}
// ...
private void HandleException( CookComputing.XmlRpc.XmlRpcFaultException e )
{
//...
}
private void HandleException( FooException e )
{
//...
}
private void HandleException( Exception e )
{
// called if there are no other matching signatures
}
Of course, it isn't particularly fast...
--
Arild
AnkhSVN: http://ankhsvn.tigris.org
Blog: http://ankhsvn.com/blog
IRC: irc://irc.freenode.net/ankhsvn
Weaseling out of things is good. It's what separates us from the other
animalsexcept weasels. -- Homer Simpson
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RE: [Mono-list] Using Exceptions with external Plugins
Thanks!
However, I think the best idea is to use generic Exceptions, if I try to
use the CookComputing.XmlRpc Exceptions I need to compile ALL my
application with CookComputing.dll and I'm not looking that, that's why
I'm working with plugins to just compile CookComputing.XmlRpc in the
plugins and not in all the application.
Thanks for these suggestions!
Pablo
El mar, 29-06-2004 a las 09:06, Arild Fines escribió:
[EMAIL PROTECTED] wrote:
Cool! Thanks!
Now, how can I get sure that the InnerException is a
XmlRpcFaultException or a XmlRpcMissedSomething?, I'm trying with this:
} catch(TargetInvocationException e) {
if(e.InnerException.GetType().ToString() ==
CookComputing.XmlRpc.XmlRpcFaultException) {
Console.WriteLine(yes);
}
But I don't think it's the correct way/code, any suggestions?
You might want to take advantage of the fact that Type.InvokeMember actually
performs virtual dispatch based on the runtime type of the object *AND* all
of the parameters, IE, it performs double/triple/ntuple dispatch.
That means the following will work the way you want it to:
catch( TargetInvocationException e )
{
Type t = this.GetType();
t.InvokeMember( HandleException, BindingFlags.InvokeMethod |
BindingFlags.Instance | BindingFlags.NonPublic, null,
this, new object[]{ e } );
}
// ...
private void HandleException( CookComputing.XmlRpc.XmlRpcFaultException e )
{
//...
}
private void HandleException( FooException e )
{
//...
}
private void HandleException( Exception e )
{
// called if there are no other matching signatures
}
Of course, it isn't particularly fast...
--
Arild
AnkhSVN: http://ankhsvn.tigris.org
Blog: http://ankhsvn.com/blog
IRC: irc://irc.freenode.net/ankhsvn
Weaseling out of things is good. It's what separates us from the other
animalsexcept weasels. -- Homer Simpson
--
Pablo Fischer Sandoval (pablo [arroba/at] pablo.com.mx)
Fingerprint: 5973 0F10 543F 54AE 1E41 EC81 0840 A10A 74A4 E5C0
http://www.pablo.com.mx
http://www.debianmexico.org
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RE: [Mono-list] Using Exceptions with external Plugins
[EMAIL PROTECTED] wrote: Hi! I'm loading many plugins (assemblies, dll) from my App.exe, however sometimes a plugin can throw an exception, how can I catch it?, I can only catch the System.Reflection.TargetInvocationException cause I'm using Reflection/Invoke techniques.. but I can't 'catch' 'internal Exceptions' of these plugins. For example, a Plugin.dll can throw a CookComputing.XmlRpc.XmlRpcFaultException and it doesn't works, however System.Reflection.TargetInvocationException seems to catch it, but just the Invoke Exception. Any ideas? Pablo The docs on TargetInvocationException has this: When created, the TargetInvocationException is passed a reference to the exception thrown by the method invoked through reflection. The InnerException property holds the underlying exception. So tex.InnerException should give you what you need. -- Arild AnkhSVN: http://ankhsvn.tigris.org Blog: http://ankhsvn.com/blog IRC: irc://irc.freenode.net/ankhsvn Weaseling out of things is good. It's what separates us from the other animalsexcept weasels. -- Homer Simpson ___ Mono-list maillist - [EMAIL PROTECTED] http://lists.ximian.com/mailman/listinfo/mono-list
RE: [Mono-list] Using Exceptions with external Plugins
Cool! Thanks!
Now, how can I get sure that the InnerException is a
XmlRpcFaultException or a XmlRpcMissedSomething?, I'm trying with this:
} catch(TargetInvocationException e) {
if(e.InnerException.GetType().ToString() ==
CookComputing.XmlRpc.XmlRpcFaultException) {
Console.WriteLine(yes);
}
But I don't think it's the correct way/code, any suggestions?
Thanks!
Pablo
El lun, 28-06-2004 a las 18:54, Arild Fines escribió:
[EMAIL PROTECTED] wrote:
Hi!
I'm loading many plugins (assemblies, dll) from my App.exe, however
sometimes a plugin can throw an exception, how can I catch it?, I can
only catch the System.Reflection.TargetInvocationException cause I'm
using Reflection/Invoke techniques.. but I can't 'catch' 'internal
Exceptions' of these plugins.
For example, a Plugin.dll can throw a
CookComputing.XmlRpc.XmlRpcFaultException and it doesn't works, however
System.Reflection.TargetInvocationException seems to catch it, but just
the Invoke Exception.
Any ideas?
Pablo
The docs on TargetInvocationException has this:
When created, the TargetInvocationException is passed a reference to the
exception thrown by the method invoked through reflection. The
InnerException property holds the underlying exception.
So tex.InnerException should give you what you need.
--
Arild
AnkhSVN: http://ankhsvn.tigris.org
Blog: http://ankhsvn.com/blog
IRC: irc://irc.freenode.net/ankhsvn
Weaseling out of things is good. It's what separates us from the other
animalsexcept weasels. -- Homer Simpson
___
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--
Pablo Fischer Sandoval (pablo [arroba/at] pablo.com.mx)
Fingerprint: 5973 0F10 543F 54AE 1E41 EC81 0840 A10A 74A4 E5C0
http://www.pablo.com.mx
http://www.debianmexico.org
signature.asc
Description: Esta parte del mensaje =?ISO-8859-1?Q?est=E1?= firmada digitalmente
RE: [Mono-list] Using Exceptions with external Plugins
On Tue, 2004-06-29 at 11:14, Pablo Fischer wrote:
Cool! Thanks!
Now, how can I get sure that the InnerException is a
XmlRpcFaultException or a XmlRpcMissedSomething?, I'm trying with this:
} catch(TargetInvocationException e) {
if(e.InnerException.GetType().ToString() ==
CookComputing.XmlRpc.XmlRpcFaultException) {
Console.WriteLine(yes);
else
}
But I don't think it's the correct way/code, any suggestions?
You might try this:
if(e.InnerException is CookComputing.XmlRpc.XmlRpcFaultException)
You should also do something sensible with exceptions that fail all your
if statements. That might be rethrowing or some sort of generic error
message.
--
Iain McCoy [EMAIL PROTECTED]
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