«

Hi,


I am using Assembly.LoadFrom within a web service to load assemblies from a

web site. This web site is in the same machine where I am running the web

service.

The Assembly.LoadFrom(httpsite) method throws a file not found exception.

I used the same code within a windows based application on the same machine

and it worked, so if the windows based application can load the assembly why

can't the web service find the same? I have been working on this problem

for a couple of days and can't figure out why it throws this exception. Is

this a security issue and if so why does it throw a file not found

exception?


Help is greatly appreciated.


Thanks in advance

Surya

Can you post some code how you load the dll? How does the httpsite string
looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)

--
Greetz

Jan Tielens
________________________________
Read my weblog: http://weblogs.asp.net/jan


"surya" <> wrote in message
news:#...
> Hi,
>
>
> I am using Assembly.LoadFrom within a web service to load assemblies from
a
>
> web site. This web site is in the same machine where I am running the web
>
> service.
>
> The Assembly.LoadFrom(httpsite) method throws a file not found exception.
>
> I used the same code within a windows based application on the same
machine
>
> and it worked, so if the windows based application can load the assembly
why
>
> can't the web service find the same? I have been working on this problem
>
> for a couple of days and can't figure out why it throws this exception. Is
>
> this a security issue and if so why does it throw a file not found
>
> exception?
>
>
> Help is greatly appreciated.
>
>
> Thanks in advance
>
> Surya
>
>
>
>
>

From the documentation:
http://tinyurl.com/2r7g4
Requirements
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows
2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003
family, .NET Compact Framework

..NET Framework Security:

a.. ReflectionPermission when invoked late-bound through mechanisms such
as Type.InvokeMember. Associated enumeration:
ReflectionPermissionFlag.MemberAccess.
b.. FileIOPermission for reading a URI that begins with "file://".
Associated enumeration: FileIOPermissionAccess.Read
c.. WebPermission for reading a URI that does not begin with "file://".
So it could be a security issue. Which OS are you using? xp, 2000
server/pro, 2003?

--
Greetz

Jan Tielens
________________________________
Read my weblog: http://weblogs.asp.net/jan


"surya" <> wrote in message
news:...
> Hi,
>
> Below is the code i am using in both the web service as well as the
> windows based application:
>
> Assembly ass =
> Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
>
> Type cls1 = Type.GetType("ShareAssembly.Class1");
>
> object obj1 = ass.CreateInstance("ShareAssembly.Class1");
>
> System.Reflection.MethodInfo meth = cls1.GetMethod("Delete");
>
> meth.Invoke(obj1,null);
>
> This code works within a windows based/ console based application but
> throws a File not found exception within a web service.
>
> Within a web service, the code works if the assembly is loaded from a
> local directory but fails if it is loaded from a url site or from a
network
> share.
>
>
>
> Regards
>
> Surya
>
>
>
>
>
> "Jan Tielens" <> wrote in message
> news:...
> > Can you post some code how you load the dll? How does the httpsite
> string
> > looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
> >
> > --
> > Greetz
> >
> > Jan Tielens
> > ________________________________
> > Read my weblog: http://weblogs.asp.net/jan
> >
> >
> > "surya" <> wrote in message
> > news:#...
> > > Hi,
> > >
> > >
> > > I am using Assembly.LoadFrom within a web service to load assemblies
> from
> > a
> > >
> > > web site. This web site is in the same machine where I am running
the
> web
> > >
> > > service.
> > >
> > > The Assembly.LoadFrom(httpsite) method throws a file not found
> exception.
> > >
> > > I used the same code within a windows based application on the same
> > machine
> > >
> > > and it worked, so if the windows based application can load the
> assembly
> > why
> > >
> > > can't the web service find the same? I have been working on this
> problem
> > >
> > > for a couple of days and can't figure out why it throws this
> exception. Is
> > >
> > > this a security issue and if so why does it throw a file not found
> > >
> > > exception?
> > >
> > >
> > > Help is greatly appreciated.
> > >
> > >
> > > Thanks in advance
> > >
> > > Surya
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>

Hi,

Below is the code i am using in both the web service as well as the
windows based application:

Assembly ass =
Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");

Type cls1 = Type.GetType("ShareAssembly.Class1");

object obj1 = ass.CreateInstance("ShareAssembly.Class1");

System.Reflection.MethodInfo meth = cls1.GetMethod("Delete");

meth.Invoke(obj1,null);

This code works within a windows based/ console based application but
throws a File not found exception within a web service.

Within a web service, the code works if the assembly is loaded from a
local directory but fails if it is loaded from a url site or from a network
share.



Regards

Surya





"Jan Tielens" <> wrote in message
news:...
> Can you post some code how you load the dll? How does the httpsite
string
> looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
>
> --
> Greetz
>
> Jan Tielens
> ________________________________
> Read my weblog: http://weblogs.asp.net/jan
>
>
> "surya" <> wrote in message
> news:#...
> > Hi,
> >
> >
> > I am using Assembly.LoadFrom within a web service to load assemblies
from
> a
> >
> > web site. This web site is in the same machine where I am running the
web
> >
> > service.
> >
> > The Assembly.LoadFrom(httpsite) method throws a file not found
exception.
> >
> > I used the same code within a windows based application on the same
> machine
> >
> > and it worked, so if the windows based application can load the
assembly
> why
> >
> > can't the web service find the same? I have been working on this
problem
> >
> > for a couple of days and can't figure out why it throws this
exception. Is
> >
> > this a security issue and if so why does it throw a file not found
> >
> > exception?
> >
> >
> > Help is greatly appreciated.
> >
> >
> > Thanks in advance
> >
> > Surya
> >
> >
> >
> >
> >
>
>

I am using a Windows 2000 server with IIS5.0.
I use the following code to load the assembly and then use it to create an
instance of a particular type.
Assembly ass =
Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
This line goes through if it is called within a windows/console based app
but fails only within a web service.



Regards
Surya


"Jan Tielens" <> wrote in message
news:...
> From the documentation:
> http://tinyurl.com/2r7g4
> Requirements
> Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition,
Windows
> 2000, Windows XP Home Edition, Windows XP Professional, Windows Server
2003
> family, .NET Compact Framework
>
> .NET Framework Security:
>
> a.. ReflectionPermission when invoked late-bound through mechanisms
such
> as Type.InvokeMember. Associated enumeration:
> ReflectionPermissionFlag.MemberAccess.
> b.. FileIOPermission for reading a URI that begins with "file://".
> Associated enumeration: FileIOPermissionAccess.Read
> c.. WebPermission for reading a URI that does not begin with
"file://".
> So it could be a security issue. Which OS are you using? xp, 2000
> server/pro, 2003?
>
> --
> Greetz
>
> Jan Tielens
> ________________________________
> Read my weblog: http://weblogs.asp.net/jan
>
>
> "surya" <> wrote in message
> news:...
> > Hi,
> >
> > Below is the code i am using in both the web service as well as the
> > windows based application:
> >
> > Assembly ass =
> > Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> >
> > Type cls1 = Type.GetType("ShareAssembly.Class1");
> >
> > object obj1 = ass.CreateInstance("ShareAssembly.Class1");
> >
> > System.Reflection.MethodInfo meth = cls1.GetMethod("Delete");
> >
> > meth.Invoke(obj1,null);
> >
> > This code works within a windows based/ console based application
but
> > throws a File not found exception within a web service.
> >
> > Within a web service, the code works if the assembly is loaded from
a
> > local directory but fails if it is loaded from a url site or from a
> network
> > share.
> >
> >
> >
> > Regards
> >
> > Surya
> >
> >
> >
> >
> >
> > "Jan Tielens" <> wrote in message
> > news:...
> > > Can you post some code how you load the dll? How does the httpsite
> > string
> > > looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
> > >
> > > --
> > > Greetz
> > >
> > > Jan Tielens
> > > ________________________________
> > > Read my weblog: http://weblogs.asp.net/jan
> > >
> > >
> > > "surya" <> wrote in
message
> > > news:#...
> > > > Hi,
> > > >
> > > >
> > > > I am using Assembly.LoadFrom within a web service to load
assemblies
> > from
> > > a
> > > >
> > > > web site. This web site is in the same machine where I am
running
> the
> > web
> > > >
> > > > service.
> > > >
> > > > The Assembly.LoadFrom(httpsite) method throws a file not found
> > exception.
> > > >
> > > > I used the same code within a windows based application on the
same
> > > machine
> > > >
> > > > and it worked, so if the windows based application can load the
> > assembly
> > > why
> > > >
> > > > can't the web service find the same? I have been working on this
> > problem
> > > >
> > > > for a couple of days and can't figure out why it throws this
> > exception. Is
> > > >
> > > > this a security issue and if so why does it throw a file not
found
> > > >
> > > > exception?
> > > >
> > > >
> > > > Help is greatly appreciated.
> > > >
> > > >
> > > > Thanks in advance
> > > >
> > > > Surya
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
> >
>
>

Ok, I've been able to reproduce this exception. It's a security issue, by
default the webservice can't download dll's (System.IO.FileLoadException:
HTTP download of assemblies has been disabled for this appdomain.).

Info I've found:
"HTTP download of assemblies has been disabled for this appdomain."

This error indicates that AppDomainSetup.DisallowCodeDownload has been set
on the domain. Setting his flag prevents any http:// download of assemblies
(or configuration files). ASP.NET sets this flag by default because the
internal usage of wininet/urlmon to download bits over http:// is not
supported under service processes.

So I don't know a solution for your problem... Is it possible to place this
dll in a file share instead of a website?
--
Greetz


Jan Tielens
________________________________
Read my weblog: http://weblogs.asp.net/jan


"surya" <> wrote in message
news:...
> I am using a Windows 2000 server with IIS5.0.
> I use the following code to load the assembly and then use it to create
an
> instance of a particular type.
> Assembly ass =
> Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> This line goes through if it is called within a windows/console based
app
> but fails only within a web service.
>
>
>
> Regards
> Surya
>
>
> "Jan Tielens" <> wrote in message
> news:...
> > From the documentation:
> > http://tinyurl.com/2r7g4
> > Requirements
> > Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition,
> Windows
> > 2000, Windows XP Home Edition, Windows XP Professional, Windows Server
> 2003
> > family, .NET Compact Framework
> >
> > .NET Framework Security:
> >
> > a.. ReflectionPermission when invoked late-bound through mechanisms
> such
> > as Type.InvokeMember. Associated enumeration:
> > ReflectionPermissionFlag.MemberAccess.
> > b.. FileIOPermission for reading a URI that begins with "file://".
> > Associated enumeration: FileIOPermissionAccess.Read
> > c.. WebPermission for reading a URI that does not begin with
> "file://".
> > So it could be a security issue. Which OS are you using? xp, 2000
> > server/pro, 2003?
> >
> > --
> > Greetz
> >
> > Jan Tielens
> > ________________________________
> > Read my weblog: http://weblogs.asp.net/jan
> >
> >
> > "surya" <> wrote in message
> > news:...
> > > Hi,
> > >
> > > Below is the code i am using in both the web service as well as
the
> > > windows based application:
> > >
> > > Assembly ass =
> > > Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> > >
> > > Type cls1 = Type.GetType("ShareAssembly.Class1");
> > >
> > > object obj1 = ass.CreateInstance("ShareAssembly.Class1");
> > >
> > > System.Reflection.MethodInfo meth = cls1.GetMethod("Delete");
> > >
> > > meth.Invoke(obj1,null);
> > >
> > > This code works within a windows based/ console based application
> but
> > > throws a File not found exception within a web service.
> > >
> > > Within a web service, the code works if the assembly is loaded
from
> a
> > > local directory but fails if it is loaded from a url site or from a
> > network
> > > share.
> > >
> > >
> > >
> > > Regards
> > >
> > > Surya
> > >
> > >
> > >
> > >
> > >
> > > "Jan Tielens" <> wrote in message
> > > news:...
> > > > Can you post some code how you load the dll? How does the
httpsite
> > > string
> > > > looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
> > > >
> > > > --
> > > > Greetz
> > > >
> > > > Jan Tielens
> > > > ________________________________
> > > > Read my weblog: http://weblogs.asp.net/jan
> > > >
> > > >
> > > > "surya" <> wrote in
> message
> > > > news:#...
> > > > > Hi,
> > > > >
> > > > >
> > > > > I am using Assembly.LoadFrom within a web service to load
> assemblies
> > > from
> > > > a
> > > > >
> > > > > web site. This web site is in the same machine where I am
> running
> > the
> > > web
> > > > >
> > > > > service.
> > > > >
> > > > > The Assembly.LoadFrom(httpsite) method throws a file not found
> > > exception.
> > > > >
> > > > > I used the same code within a windows based application on the
> same
> > > > machine
> > > > >
> > > > > and it worked, so if the windows based application can load
the
> > > assembly
> > > > why
> > > > >
> > > > > can't the web service find the same? I have been working on
this
> > > problem
> > > > >
> > > > > for a couple of days and can't figure out why it throws this
> > > exception. Is
> > > > >
> > > > > this a security issue and if so why does it throw a file not
> found
> > > > >
> > > > > exception?
> > > > >
> > > > >
> > > > > Help is greatly appreciated.
> > > > >
> > > > >
> > > > > Thanks in advance
> > > > >
> > > > > Surya
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
>
>
>

I was using the 1.1 version of the framework.

--
Greetz

Jan Tielens
________________________________
Read my weblog: http://weblogs.asp.net/jan


"surya" <> wrote in message
news:...
> Thanks very much for the information.
> I get a FileNotFoundException but you get a FileloadException. I am
using
> .Net framework 1.0. R u using 1.1?
>
> I need to download it from a http site as this would allow to overwrite
> assemblies when they are in use by other applications. If I use a file
> share, the loadfrom locks the assembly that is loaded and so does not
allow
> the assembly to be overwritten.
>
> To get around the problem, I planned to load the files from a virtual
> directory in the same machine. I also planned to write a listener on the
> virtual directory folder (since the assemblies are on the same machine) to
> check whether the assembly is overwritten and raise an event when the
> assembly is overwritten. The applications that are using this assembly
could
> then decide to unload the appdomains that have loaded this assembly.
>
>
> Thanks very much for helping me out on this issue.
>
> Surya
>
>
> "Jan Tielens" <> wrote in message
> news:...
> > Ok, I've been able to reproduce this exception. It's a security issue,
> by
> > default the webservice can't download dll's
> (System.IO.FileLoadException:
> > HTTP download of assemblies has been disabled for this appdomain.).
> >
> > Info I've found:
> > "HTTP download of assemblies has been disabled for this appdomain."
> >
> > This error indicates that AppDomainSetup.DisallowCodeDownload has been
> set
> > on the domain. Setting his flag prevents any http:// download of
> assemblies
> > (or configuration files). ASP.NET sets this flag by default because
the
> > internal usage of wininet/urlmon to download bits over http:// is not
> > supported under service processes.
> >
> > So I don't know a solution for your problem... Is it possible to place
> this
> > dll in a file share instead of a website?
> > --
> > Greetz
> >
> >
> > Jan Tielens
> > ________________________________
> > Read my weblog: http://weblogs.asp.net/jan
> >
> >
> > "surya" <> wrote in message
> > news:...
> > > I am using a Windows 2000 server with IIS5.0.
> > > I use the following code to load the assembly and then use it to
> create
> > an
> > > instance of a particular type.
> > > Assembly ass =
> > > Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> > > This line goes through if it is called within a windows/console
> based
> > app
> > > but fails only within a web service.
> > >
> > >
> > >
> > > Regards
> > > Surya
> > >
> > >
> > > "Jan Tielens" <> wrote in message
> > > news:...
> > > > From the documentation:
> > > > http://tinyurl.com/2r7g4
> > > > Requirements
> > > > Platforms: Windows 98, Windows NT 4.0, Windows Millennium
Edition,
> > > Windows
> > > > 2000, Windows XP Home Edition, Windows XP Professional, Windows
> Server
> > > 2003
> > > > family, .NET Compact Framework
> > > >
> > > > .NET Framework Security:
> > > >
> > > > a.. ReflectionPermission when invoked late-bound through
> mechanisms
> > > such
> > > > as Type.InvokeMember. Associated enumeration:
> > > > ReflectionPermissionFlag.MemberAccess.
> > > > b.. FileIOPermission for reading a URI that begins with
> "file://".
> > > > Associated enumeration: FileIOPermissionAccess.Read
> > > > c.. WebPermission for reading a URI that does not begin with
> > > "file://".
> > > > So it could be a security issue. Which OS are you using? xp,
2000
> > > > server/pro, 2003?
> > > >
> > > > --
> > > > Greetz
> > > >
> > > > Jan Tielens
> > > > ________________________________
> > > > Read my weblog: http://weblogs.asp.net/jan
> > > >
> > > >
> > > > "surya" <> wrote in
> message
> > > > news:...
> > > > > Hi,
> > > > >
> > > > > Below is the code i am using in both the web service as well
a
> s
> > the
> > > > > windows based application:
> > > > >
> > > > > Assembly ass =
> > > > >
Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> > > > >
> > > > > Type cls1 = Type.GetType("ShareAssembly.Class1");
> > > > >
> > > > > object obj1 = ass.CreateInstance("ShareAssembly.Class1");
> > > > >
> > > > > System.Reflection.MethodInfo meth =
cls1.GetMethod("Delete");
> > > > >
> > > > > meth.Invoke(obj1,null);
> > > > >
> > > > > This code works within a windows based/ console based
> application
> > > but
> > > > > throws a File not found exception within a web service.
> > > > >
> > > > > Within a web service, the code works if the assembly is
loaded
> > from
> > > a
> > > > > local directory but fails if it is loaded from a url site or
> from a
> > > > network
> > > > > share.
> > > > >
> > > > >
> > > > >
> > > > > Regards
> > > > >
> > > > > Surya
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > "Jan Tielens" <> wrote in
message
> > > > > news:...
> > > > > > Can you post some code how you load the dll? How does the
> > httpsite
> > > > > string
> > > > > > looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
> > > > > >
> > > > > > --
> > > > > > Greetz
> > > > > >
> > > > > > Jan Tielens
> > > > > > ________________________________
> > > > > > Read my weblog: http://weblogs.asp.net/jan
> > > > > >
> > > > > >
> > > > > > "surya" <> wrote
in
> > > message
> > > > > > news:#...
> > > > > > > Hi,
> > > > > > >
> > > > > > >
> > > > > > > I am using Assembly.LoadFrom within a web service to
load
> > > assemblies
> > > > > from
> > > > > > a
> > > > > > >
> > > > > > > web site. This web site is in the same machine where I
am
> > > running
> > > > the
> > > > > web
> > > > > > >
> > > > > > > service.
> > > > > > >
> > > > > > > The Assembly.LoadFrom(httpsite) method throws a file not
> found
> > > > > exception.
> > > > > > >
> > > > > > > I used the same code within a windows based application
on
> the
> > > same
> > > > > > machine
> > > > > > >
> > > > > > > and it worked, so if the windows based application can
> load
> > the
> > > > > assembly
> > > > > > why
> > > > > > >
> > > > > > > can't the web service find the same? I have been working
> on
> > this
> > > > > problem
> > > > > > >
> > > > > > > for a couple of days and can't figure out why it throws
> this
> > > > > exception. Is
> > > > > > >
> > > > > > > this a security issue and if so why does it throw a file
> not
> > > found
> > > > > > >
> > > > > > > exception?
> > > > > > >
> > > > > > >
> > > > > > > Help is greatly appreciated.
> > > > > > >
> > > > > > >
> > > > > > > Thanks in advance
> > > > > > >
> > > > > > > Surya
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
>
>
>

Thanks very much for the information.
I get a FileNotFoundException but you get a FileloadException. I am using
..Net framework 1.0. R u using 1.1?

I need to download it from a http site as this would allow to overwrite
assemblies when they are in use by other applications. If I use a file
share, the loadfrom locks the assembly that is loaded and so does not allow
the assembly to be overwritten.

To get around the problem, I planned to load the files from a virtual
directory in the same machine. I also planned to write a listener on the
virtual directory folder (since the assemblies are on the same machine) to
check whether the assembly is overwritten and raise an event when the
assembly is overwritten. The applications that are using this assembly could
then decide to unload the appdomains that have loaded this assembly.


Thanks very much for helping me out on this issue.

Surya


"Jan Tielens" <> wrote in message
news:...
> Ok, I've been able to reproduce this exception. It's a security issue,
by
> default the webservice can't download dll's
(System.IO.FileLoadException:
> HTTP download of assemblies has been disabled for this appdomain.).
>
> Info I've found:
> "HTTP download of assemblies has been disabled for this appdomain."
>
> This error indicates that AppDomainSetup.DisallowCodeDownload has been
set
> on the domain. Setting his flag prevents any http:// download of
assemblies
> (or configuration files). ASP.NET sets this flag by default because the
> internal usage of wininet/urlmon to download bits over http:// is not
> supported under service processes.
>
> So I don't know a solution for your problem... Is it possible to place
this
> dll in a file share instead of a website?
> --
> Greetz
>
>
> Jan Tielens
> ________________________________
> Read my weblog: http://weblogs.asp.net/jan
>
>
> "surya" <> wrote in message
> news:...
> > I am using a Windows 2000 server with IIS5.0.
> > I use the following code to load the assembly and then use it to
create
> an
> > instance of a particular type.
> > Assembly ass =
> > Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> > This line goes through if it is called within a windows/console
based
> app
> > but fails only within a web service.
> >
> >
> >
> > Regards
> > Surya
> >
> >
> > "Jan Tielens" <> wrote in message
> > news:...
> > > From the documentation:
> > > http://tinyurl.com/2r7g4
> > > Requirements
> > > Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition,
> > Windows
> > > 2000, Windows XP Home Edition, Windows XP Professional, Windows
Server
> > 2003
> > > family, .NET Compact Framework
> > >
> > > .NET Framework Security:
> > >
> > > a.. ReflectionPermission when invoked late-bound through
mechanisms
> > such
> > > as Type.InvokeMember. Associated enumeration:
> > > ReflectionPermissionFlag.MemberAccess.
> > > b.. FileIOPermission for reading a URI that begins with
"file://".
> > > Associated enumeration: FileIOPermissionAccess.Read
> > > c.. WebPermission for reading a URI that does not begin with
> > "file://".
> > > So it could be a security issue. Which OS are you using? xp, 2000
> > > server/pro, 2003?
> > >
> > > --
> > > Greetz
> > >
> > > Jan Tielens
> > > ________________________________
> > > Read my weblog: http://weblogs.asp.net/jan
> > >
> > >
> > > "surya" <> wrote in
message
> > > news:...
> > > > Hi,
> > > >
> > > > Below is the code i am using in both the web service as well a
s
> the
> > > > windows based application:
> > > >
> > > > Assembly ass =
> > > > Assembly.LoadFrom("http://localhost/storage/shareassembly.dll");
> > > >
> > > > Type cls1 = Type.GetType("ShareAssembly.Class1");
> > > >
> > > > object obj1 = ass.CreateInstance("ShareAssembly.Class1");
> > > >
> > > > System.Reflection.MethodInfo meth = cls1.GetMethod("Delete");
> > > >
> > > > meth.Invoke(obj1,null);
> > > >
> > > > This code works within a windows based/ console based
application
> > but
> > > > throws a File not found exception within a web service.
> > > >
> > > > Within a web service, the code works if the assembly is loaded
> from
> > a
> > > > local directory but fails if it is loaded from a url site or
from a
> > > network
> > > > share.
> > > >
> > > >
> > > >
> > > > Regards
> > > >
> > > > Surya
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > "Jan Tielens" <> wrote in message
> > > > news:...
> > > > > Can you post some code how you load the dll? How does the
> httpsite
> > > > string
> > > > > looks like? (\\share\mydll.dll, http://web/mydll.dll, ...)
> > > > >
> > > > > --
> > > > > Greetz
> > > > >
> > > > > Jan Tielens
> > > > > ________________________________
> > > > > Read my weblog: http://weblogs.asp.net/jan
> > > > >
> > > > >
> > > > > "surya" <> wrote in
> > message
> > > > > news:#...
> > > > > > Hi,
> > > > > >
> > > > > >
> > > > > > I am using Assembly.LoadFrom within a web service to load
> > assemblies
> > > > from
> > > > > a
> > > > > >
> > > > > > web site. This web site is in the same machine where I am
> > running
> > > the
> > > > web
> > > > > >
> > > > > > service.
> > > > > >
> > > > > > The Assembly.LoadFrom(httpsite) method throws a file not
found
> > > > exception.
> > > > > >
> > > > > > I used the same code within a windows based application on
the
> > same
> > > > > machine
> > > > > >
> > > > > > and it worked, so if the windows based application can
load
> the
> > > > assembly
> > > > > why
> > > > > >
> > > > > > can't the web service find the same? I have been working
on
> this
> > > > problem
> > > > > >
> > > > > > for a couple of days and can't figure out why it throws
this
> > > > exception. Is
> > > > > >
> > > > > > this a security issue and if so why does it throw a file
not
> > found
> > > > > >
> > > > > > exception?
> > > > > >
> > > > > >
> > > > > > Help is greatly appreciated.
> > > > > >
> > > > > >
> > > > > > Thanks in advance
> > > > > >
> > > > > > Surya
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
> >
>
>