appdomain configuration file error

[hB]

Hi.
Error = "The configuration system can only be set once. Configuration
system is already set"
Exception Details: System.InvalidO perationExcepti *on: The
configuration
system can only be set once. Configuration system is already set
....
System.Web.Conf iguration.HttpC *onfigurationSy stemBase.Ensure I*nit()
System.Web.Http Runtime.InitCon *figuration(Htt pContext context)
System.Web.Http Runtime.FirstRe *questInit(Http Context context)
....
I am not on IIS. I am hosting ASP dotnet, in a dotnet console
applicaiton.
The console app has its own default app domain.
When i create as
ApplicationHost .CreateApplicat *ionHost(Type.G etType("url.ASP N*etHost"),

"/",Directory.Get CurrentDirect*o ry());
it worx fine.
but when i create myself an appdomain //due to some reason regarding
[web]application base directory
....loDomain = AppDomain.Creat eDomain(domainI *d, null, setup);...
as mentioned in here (reference)
http://radio.weblogs.com/0105476/sto...cutingAspxPage...

in my code:
msh =
ASPNetHost.Crea teApplicationHo *st(Type.GetTyp e("url.ASPNetHo s*t"),
"/",Directory.Get CurrentDirect*o ry()+"\\web",Di rectory.GetCur* rentDirectory() );

and when i do
msh.ProcessRequ est(file_name, query,tw);
Then this error comes when i use my own appdomain creation.
I think this is some one console exe with its domian create another
appdomain with its (need to be separately own) configuraiton file
(which is there or not there does gives problem) (i do AppDomainSetup
setup = new AppDomainSetup( ); | setup.Configura tionFile = "web.config ";

BUT IT gives same problem)
I hope you guys understand.
Thanks in advance
Awaiting replies.
regards,
---
hB

[Juan T. Llibre]

Hi, hB.

Maybe it would help to review these links :

Application Domain FAQ :
http://www.gotdotnet.com/team/clr/AppdomainFAQ.aspx

There's also good info here :
http://www.andymcm.com/dotnetfaq.htm

Finally, there's example code at :
http://msdn.microsoft.com/library/de...nfiletopic.asp


Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
=============== =======

"hB" <ha*********@gm ail.com> wrote in message
news:11******** **************@ f14g2000cwb.goo glegroups.com.. .
Hi.
Error = "The configuration system can only be set once. Configuration
system is already set"
Exception Details: System.InvalidO perationExcepti *on: The
configuration
system can only be set once. Configuration system is already set
....
System.Web.Conf iguration.HttpC *onfigurationSy stemBase.Ensure I*nit()
System.Web.Http Runtime.InitCon *figuration(Htt pContext context)
System.Web.Http Runtime.FirstRe *questInit(Http Context context)
....
I am not on IIS. I am hosting ASP dotnet, in a dotnet console
applicaiton.
The console app has its own default app domain.
When i create as
ApplicationHost .CreateApplicat *ionHost(Type.G etType("url.ASP N*etHost"),

"/",Directory.Get CurrentDirect*o ry());
it worx fine.
but when i create myself an appdomain //due to some reason regarding
[web]application base directory
....loDomain = AppDomain.Creat eDomain(domainI *d, null, setup);...
as mentioned in here (reference)
http://radio.weblogs.com/0105476/sto...cutingAspxPage...

in my code:
msh =
ASPNetHost.Crea teApplicationHo *st(Type.GetTyp e("url.ASPNetHo s*t"),
"/",Directory.Get CurrentDirect*o ry()+"\\web",Di rectory.GetCur* rentDirectory() );

and when i do
msh.ProcessRequ est(file_name, query,tw);
Then this error comes when i use my own appdomain creation.
I think this is some one console exe with its domian create another
appdomain with its (need to be separately own) configuraiton file
(which is there or not there does gives problem) (i do AppDomainSetup
setup = new AppDomainSetup( ); | setup.Configura tionFile = "web.config ";

BUT IT gives same problem)
I hope you guys understand.
Thanks in advance
Awaiting replies.
regards,
---
hB

[hB]

Its not just a simple appdomain configuration problem.

I am doing it this way, may some errors in it.
Code fragment:
--------------------------------------------------------------------------
string aspDir = HttpRuntime.Asp InstallDirector y;
string domainId = "ASPHOST_" +
DateTime.Now.To String().GetHas hCode().ToStrin g("x");
string appName = (virtualDir +
physicalDir).Ge tHashCode().ToS tring("x");
AppDomainSetup setup = new AppDomainSetup( );
setup.Applicati onName = appName;
setup.Configura tionFile = "app.config ";
if (ApplicationBas e != null && ApplicationBase != "")
setup.Applicati onBase = ApplicationBase ;
AppDomain loDomain = AppDomain.Creat eDomain(domainI d, null, setup);
loDomain.SetDat a(".appDomain ", "*");
loDomain.SetDat a(".appPath", physicalDir);
loDomain.SetDat a(".appVPath" , virtualDir);
loDomain.SetDat a(".domainId" , domainId);
loDomain.SetDat a(".hostingVirt ualPath", virtualDir);
loDomain.SetDat a(".hostingInst allDir", aspDir);
System.Runtime. Remoting.Object Handle oh =
loDomain.Create Instance(hostTy pe.Module.Assem bly.FullName,
hostType.FullNa me);
ASPNetHost loHost = (ASPNetHost) oh.Unwrap();
loHost.cVirtual Path = virtualDir;
loHost.cPhysica lDirectory = physicalDir;
loHost.oAppDoma in = loDomain;
return loHost;
--------------------------------------------------------------------------

when quering from my internet client (browser) as http://localhost/
i get this error

Server Error in '/' Application.
--------------------------------------------------------------------------------
The configuration system can only be set once. Configuration system is
already set.
Exception Details: System.InvalidO perationExcepti on: The configuration
system can only be set once. Configuration system is already set.

Stack Trace:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
[InvalidOperatio nException: The configuration system can only be set
once. Configuration system is already set]

System.Configur ation.Configura tionSettings.Se tConfigurationS ystem(IConfigur ationSystem
configSystem)

[TargetInvocatio nException: Exception has been thrown by the target of
an invocation.]
System.Reflecti on.RuntimeMetho dInfo.InternalI nvoke(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters,
CultureInfo culture, Boolean isBinderDefault , Assembly caller, Boolean
verifyAccess) +0
System.Reflecti on.RuntimeMetho dInfo.InternalI nvoke(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters,
CultureInfo culture, Boolean verifyAccess)
System.Reflecti on.RuntimeMetho dInfo.Invoke(Ob ject obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflecti on.MethodBase.I nvoke(Object obj, Object[] parameters)
System.Web.Conf iguration.HttpC onfigurationSys temBase.EnsureI nit()
System.Web.Http Runtime.InitCon figuration(Http Context context)
System.Web.Http Runtime.FirstRe questInit(HttpC ontext context)

[HttpException (0x80004005): ASP.NET Initialization Error]
System.Web.Http Runtime.FirstRe questInit(HttpC ontext context)
System.Web.Http Runtime.Process RequestInternal (HttpWorkerRequ est wr)
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Main Application Thread (MT in a console based app with TcpListener)
MT -> creates appdomain. (for asp.net)
The class in appdomain.doSoP rocessRequest() //proxy call. and then this
error comes upon first call to it by proxy call cross appdomain.
Thanks.

[hB]

Its not just a simple appdomain configuration problem.

I am doing it this way, may some errors in it.
Code fragment:
--------------------------------------------------------------------------
string aspDir = HttpRuntime.Asp InstallDirector y;
string domainId = "ASPHOST_" +
DateTime.Now.To String().GetHas hCode().ToStrin g("x");
string appName = (virtualDir +
physicalDir).Ge tHashCode().ToS tring("x");
AppDomainSetup setup = new AppDomainSetup( );
setup.Applicati onName = appName;
setup.Configura tionFile = "app.config ";
if (ApplicationBas e != null && ApplicationBase != "")
setup.Applicati onBase = ApplicationBase ;
AppDomain loDomain = AppDomain.Creat eDomain(domainI d, null, setup);
loDomain.SetDat a(".appDomain ", "*");
loDomain.SetDat a(".appPath", physicalDir);
loDomain.SetDat a(".appVPath" , virtualDir);
loDomain.SetDat a(".domainId" , domainId);
loDomain.SetDat a(".hostingVirt ualPath", virtualDir);
loDomain.SetDat a(".hostingInst allDir", aspDir);
System.Runtime. Remoting.Object Handle oh =
loDomain.Create Instance(hostTy pe.Module.Assem bly.FullName,
hostType.FullNa me);
ASPNetHost loHost = (ASPNetHost) oh.Unwrap();
loHost.cVirtual Path = virtualDir;
loHost.cPhysica lDirectory = physicalDir;
loHost.oAppDoma in = loDomain;
return loHost;
--------------------------------------------------------------------------

when quering from my internet client (browser) as http://localhost/
i get this error

Server Error in '/' Application.
--------------------------------------------------------------------------------
The configuration system can only be set once. Configuration system is
already set.
Exception Details: System.InvalidO perationExcepti on: The configuration
system can only be set once. Configuration system is already set.

Stack Trace:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
[InvalidOperatio nException: The configuration system can only be set
once. Configuration system is already set]

System.Configur ation.Configura tionSettings.Se tConfigurationS ystem(IConfigur ationSystem
configSystem)

[TargetInvocatio nException: Exception has been thrown by the target of
an invocation.]
System.Reflecti on.RuntimeMetho dInfo.InternalI nvoke(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters,
CultureInfo culture, Boolean isBinderDefault , Assembly caller, Boolean
verifyAccess) +0
System.Reflecti on.RuntimeMetho dInfo.InternalI nvoke(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters,
CultureInfo culture, Boolean verifyAccess)
System.Reflecti on.RuntimeMetho dInfo.Invoke(Ob ject obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflecti on.MethodBase.I nvoke(Object obj, Object[] parameters)
System.Web.Conf iguration.HttpC onfigurationSys temBase.EnsureI nit()
System.Web.Http Runtime.InitCon figuration(Http Context context)
System.Web.Http Runtime.FirstRe questInit(HttpC ontext context)

[HttpException (0x80004005): ASP.NET Initialization Error]
System.Web.Http Runtime.FirstRe questInit(HttpC ontext context)
System.Web.Http Runtime.Process RequestInternal (HttpWorkerRequ est wr)
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Main Application Thread (MT in a console based app with TcpListener)
MT -> creates appdomain. (for asp.net)
The class in appdomain.doSoP rocessRequest() //proxy call. and then this
error comes upon first call to it by proxy call cross appdomain.
Thanks.