Ho do I read an xml schema with Signature?

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Hi I have to read an xsd for create the xml structure on a dataset.
when I do

Dim Dati_xml As New DataSet
    Dati_xml.ReadXmlSchema("xsdpath")

I get this error
Element 'http://www.w3.org/2000/09/xmldsig#:Signature' is not declared.

Can you help me?
thank you

this is the header of the xsd

XML

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns="http://www.fatturapa.gov.it/sdi/fatturapa/v1.1" targetNamespace="http://www.fatturapa.gov.it/sdi/fatturapa/v1.1" version="1.1">
<xs:import namespace="http://www.w3.org/2000/09/xmldsig#" schemaLocation="http://www.w3.org/TR/2002/REC-xmldsig-core-20020212/xmldsig-core-schema.xsd"/>

I had understood that this problem is related with the xml signature.
In the xsd i have the element signature that is referenced in another xsd
<xs:import namespace="http://www.w3.org/2000/09/xmldsig#" schemalocation="http://www.w3.org/TR/2002/REC-xmldsig-core-20020212/xmldsig-core-schema.xsd" xmlns:xs="#unknown">

this is the link of the xsd schema
[^]
any help?

Posted 29-Jul-15 2:08am

gregorio89

Updated 11-Aug-15 3:53am

v4

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Maciej Los 10-Aug-15 17:09pm

This question is not well-formed. Not enough details to provide answer. We need bit more details.

gregorio89 11-Aug-15 5:41am

what kind of details do you need?
It's exactly what I have to do, with the specific code.
I have to write an xml file, so I decided to using dataset for semplificate the insert of the data in code.
I have the xsd so i wonna to read it with the code above but when I do i get that error.
I think it's a problem with xml library included in a xml file but I'm not sure of it..

Maciej Los 11-Aug-15 5:51am

For example: complete error message, the content of xsd file, etc.
Library is OK.

Maciej Los 11-Aug-15 5:54am

Have a look at similar questions:
Validating Signature element of XML fails against XSD
Validate signed XML with XSD - xmldsig

[no name] 11-Aug-15 9:59am

And Google really does not help? e.g. http://lists.w3.org/Archives/Public/xmlschema-dev/2003Jul/0061.html[^]

gregorio89 11-Aug-15 10:12am

we are all teacher I see...
but nobody can say which is the solution

[no name] 11-Aug-15 11:05am

:). If I remove the line
xs:element ref="ds:Signature" minOccurs="0"
from the file at least it creates the dataset. Maybe it helps to find the correct solution.

3 solutions

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Maciej Los · Answer 1 · 2015-08-10T23:57:00

Solution 2

You did not provide enough information to help you. So, we can only refer to similar questions and answers which may help you to find a way to resolve your issue:
Validating Signature element of XML fails against XSD
Validate signed XML with XSD - xmldsig

Posted 10-Aug-15 23:57pm

Maciej Los

Comments

gregorio89 11-Aug-15 6:52am

it's not good for me. I have improved my question with the xml header.

Maciej Los 11-Aug-15 7:23am

This is exactly what you want. Please, read related threads carefully. You have to add XmlReaderSetting. That's all.

gregorio89 11-Aug-15 8:16am

sorry I haven't understood.
Can you post some code?

Maciej Los 11-Aug-15 8:20am

The code has been provided there. Is there any reason to not use it?

gregorio89 11-Aug-15 8:27am

§I already said that I haven't understood what do you mean with this articles so,
if you want to help me, please can you post your solution?
because I do not understand the relevance with my problem, so I can't copy and paste without understad what I write.
It's enough?

User 11060979 · Answer 2 · 2015-08-11T08:04:00

Solution 3

Not the solution, but a "pragamtic workaround" to proceed work.

I'm far away from be an expert on this, but my inspration told me to remove this "signature things", so I removed the line:

<xs:element ref="ds:Signature" minOccurs="0" />

And see... the DataSet will be created and I can Display the tables.

So at least you can go on with coding and parallel you can search for a clean solution of the above.

I don't know what I'm doing, but I'm doing it good :)
Regards

Posted 11-Aug-15 8:04am

User 11060979

Updated 11-Aug-15 8:11am

v2

Comments

Maciej Los 11-Aug-15 17:34pm

Philosophical question: if you don't know what are you doing, how can you be sure that you're doing it good?

[no name] 12-Aug-15 3:22am

I did not wrote "I'm sure" :)

Maciej Los 12-Aug-15 3:30am

You stated (for sure!) that you're doing it good ;)
As per OP question: removing this node is not proper solution, becuase it makes that xml can't be properly validated.
Cheers, Maciej

[no name] 12-Aug-15 3:34am

I mentioned that it is only a Workaround, which alows at least to go on with the tables for the moment.
Regards, Bruno

sreeyush sudhakaran · Answer 3 · 2015-08-09T00:38:00

Solution 1

You missed .xsd or.xml extension in the code. It should be like

VB

Dim Dati_xml As DataSet = New DataSet
Dati_xml.ReadXmlSchema("xsdpath.xsd")

for more refer here : https://msdn.microsoft.com/en-us/library/atchhx4f(v=vs.110).aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1[^]

Posted 9-Aug-15 0:38am

sreeyush sudhakaran

Comments

gregorio89 11-Aug-15 5:37am

No It's not true.
i wrote xsd path and the extension is included in a path.
I think it's a problem with xml library included in a xml file.

sreeyush sudhakaran 11-Aug-15 6:10am

ok..