Dynamic Code Referenced Assemblies from ASP.NET

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Jeronimo Bertran - 29 Sep 2006 02:52 GMT

Hello,

I have creatred a dll that uses CodeDom to generate and exectue dynamic
code.

Basically the dll creates a new assembly by loading some user defined
code from a database, compiles it and runs it a certain number of times.

The process works very well when I use it from a Windows Forms
application. I am now trying to use the same dll to invoke dynamic
execution from an ASP.NET page. I am sure I will run into different
problems, but my first problem is that the compiler is not able to
locate the referenced assemby dll files. Here is some detail:

CodeDom.Compiler.CompilerParameters compilerParameters;

.....

compilerParameters.ReferencedAssemblies.Add("MyAssembly.dll");

when I try to compile the code using:

compilerResults = provider.CompileAssemblyFromDom(compilerParameters,
codeCompileUnit);

I get an error "Metadata file 'MyAssembly.dll' could not be found.

The file MyAssemby.dll is in the bin directory of the WebSite directory.
I also tried adding the assembly as "bin/MyAssenby.dll" with the same
result.

Also, once I am able to compile the assembly, is there a specific
location I should use for it?

Thanks,

Jeronimo Bertran

Reply to this Message

Luke Zhang [MSFT] - 29 Sep 2006 06:36 GMT

Hello,

You may make that the account used by your ASP.NET application has enough
permission to access the folder/files. When lack of permission, there will
be such a file not found error. For example, you may check what the
authentication your ASP.NET application used, and if anonymous and
impersoante is enabled.

Second, you may change the code as following:

compilerParameters.ReferencedAssemblies.Add(Server.MapPath(".")+"\\MyAssembl
y.dll");

Server.MapPath(".") will return the phiscal path of current ASP.NET
application, and this may guide it find the file.

Sincerely,

Luke Zhang

Microsoft Online Community Support
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Reply to this Message

Jeronimo Bertran - 29 Sep 2006 23:20 GMT

Luke,

Thanks for your help. Path.Combine(Using Server.MapPath("."), "bin")
solved the problem.

I am still having some problems invoking the scripts but will look into it
before asking.

Jeronimo Bertran

Reply to this Message

Luke Zhang [MSFT] - 02 Oct 2006 03:22 GMT

Hello Jeronimo,

Thank you for the information. For any further questions, please feel free
to post in our community.

Sincerely,

Luke Zhang

Microsoft Online Community Support
This posting is provided "AS IS" with no warranties, and confers no rights.

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