XmlSerializer for a type in dynamically loaded assembly

[kishore]

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this a
security problem?

How do i solve it?

Thanks in advance.

 

[Greg Young]

The assembly needs to be on disk so the XMLserializer can reference it when
it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

 

[Greg Young]

Also when dealing with codegen in general (this doesn't necesarily apply to
you).. it will create a temp file anyways during compilation ... it is a
question of whether or not it deletes it afterwords so you might as well
just keep the file if you are using XMLSerialization on those objects

The assembly needs to be on disk so the XMLserializer can reference it
when it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this a
security problem?

How do i solve it?

Thanks in advance.

 

[kris1090]

Thanks Greg. But is there any way i can point the XmlSerializer to
reference to the assembly i loaded in to memory rather than on disk.

Thanks

Also when dealing with codegen in general (this doesn't necesarily apply to
you).. it will create a temp file anyways during compilation ... it is a
question of whether or not it deletes it afterwords so you might as well
just keep the file if you are using XMLSerialization on those objects

The assembly needs to be on disk so the XMLserializer can reference it
when it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this a
security problem?

How do i solve it?

Thanks in advance.

 

[kris1090]

Also, is there any other way i can generate XML format other than
serialization if XMLSerializer is not going to work for pre-loaded
Assemblies. Please help.

Thanks

Thanks Greg. But is there any way i can point the XmlSerializer to
reference to the assembly i loaded in to memory rather than on disk.

Thanks

Also when dealing with codegen in general (this doesn't necesarily apply to
you).. it will create a temp file anyways during compilation ... it is a
question of whether or not it deletes it afterwords so you might as well
just keep the file if you are using XMLSerialization on those objects

The assembly needs to be on disk so the XMLserializer can reference it
when it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this a
security problem?

How do i solve it?

Thanks in advance.

 

[Greg Young]

No you can't the compiler when run does not see your assembly in memory.

Thanks Greg. But is there any way i can point the XmlSerializer to
reference to the assembly i loaded in to memory rather than on disk.

Thanks

Also when dealing with codegen in general (this doesn't necesarily apply
to
you).. it will create a temp file anyways during compilation ... it is a
question of whether or not it deletes it afterwords so you might as well
just keep the file if you are using XMLSerialization on those objects

The assembly needs to be on disk so the XMLserializer can reference it
when it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this a
security problem?

How do i solve it?

Thanks in advance.

 

[Greg Young]

Why can you not just use loadfrom where it could find ands properly
reference your assembly?

Also, is there any other way i can generate XML format other than
serialization if XMLSerializer is not going to work for pre-loaded
Assemblies. Please help.

Thanks

Thanks Greg. But is there any way i can point the XmlSerializer to
reference to the assembly i loaded in to memory rather than on disk.

Thanks

Also when dealing with codegen in general (this doesn't necesarily
apply to
you).. it will create a temp file anyways during compilation ... it is
a
question of whether or not it deletes it afterwords so you might as
well
just keep the file if you are using XMLSerialization on those objects



The assembly needs to be on disk so the XMLserializer can reference
it
when it generates the code to do your serialization.

Cheers,

Greg Young
MVP - C#
http://codebetter.com/blogs/gregyoung

Hi
I have an assembly which I load using Assembly.Load(bytes[]). Within
the Assembly i have a method which invokes XmlSerializer.serialize
method on a type. This type is also within the assembly.

However the serialize method throws an exception saying

Unable to generate a serializer for type MyNamespace.Classtype from
assembly <Unknown> because the assembly may be dynamic. Save the
assembly and load it from disk to use it with XmlSerialization

On a different machine the constructor for the serializer failed to
generate with following error:

Unable to generate a temporary class (result=1).
error CS0234: The type or namespace name 'xxxxx' does not exist in
the
class or namespace yyyy

Everything works fine if i load the assembly using LoadFrom. Is this
a
security problem?

How do i solve it?

Thanks in advance.