Upgrading XMLValidatingReader

[=?Utf-8?B?SlQ=?=]

Hi all,
As you know, the XMLValidatingReader is deprecated in .NET 2.0. I have the
following snippet from a .NET 1.1 implementation that I am struggling to
upgrade. I know I should use XMLReader.Create, but am struggling to get much
further. Any help would be appreciated. Thanks.

Public Shared Sub ValidateDocument(businessDocument As XmlDocument,
schemaStrongName As String)
' Constants
Const PARTS_IN_SCHEMA_STRONG_NAME As Integer = 2
Const PART_CLASS_NAME As Integer = 0
Const PART_QUALIFIED_ASSEMBLY_NAME As Integer = 1

' Parse schema strong name
Dim assemblyNameParts As String() = schemaStrongName.Split(New Char()
{","c}, PARTS_IN_SCHEMA_STRONG_NAME)
Dim className As String = assemblyNameParts(PART_CLASS_NAME).Trim()
Dim fullyQualifiedAssemblyName As String =
assemblyNameParts(PART_QUALIFIED_ASSEMBLY_NAME).Tr im()

' Load assembly
Dim schemaAssembly As [Assembly] =
[Assembly].Load(fullyQualifiedAssemblyName)

' Create instance of the BTS schema in order to get to the actual schemas
Dim schemaType As Type = schemaAssembly.GetType(className)
Dim btsSchemaCollection As Microsoft.XLANGs.BaseTypes.SchemaBase =
CType(Activator.CreateInstance(schemaType),
Microsoft.XLANGs.BaseTypes.SchemaBase)

' Set up XML validating reader and validate document
Dim parserContext As New XmlParserContext(Nothing, Nothing, "",
XmlSpace.None)
Dim reader As New XmlValidatingReader(businessDocument.OuterXml,
XmlNodeType.Document, parserContext)
reader.ValidationType = ValidationType.Schema
reader.Schemas.Add(btsSchemaCollection.SchemaColle ction)
While reader.Read()
End While
End Sub 'ValidateDocument

--
John

[=?Utf-8?B?SlQ=?=]

A little more info...
This is what I have come up with so far..

' Create instance of the BTS schema in order to get to the actual schemas
Dim schemaType As Type = schemaAssembly.GetType(className)
Dim btsSchemaCollection As Microsoft.XLANGs.BaseTypes.SchemaBase =
CType(Activator.CreateInstance(schemaType),
Microsoft.XLANGs.BaseTypes.SchemaBase)
' Create the XmlSchemaSet class.
Dim sc As New XmlSchemaSet
' Add the schema to the collection.
sc.Add(btsSchemaCollection.Schema)

' Set the validation settings.
Dim settings As XmlReaderSettings = New XmlReaderSettings()
settings.ValidationType = ValidationType.Schema
settings.Schemas = sc
'AddHandler settings.ValidationEventHandler, AddressOf
ValidationCallBack

' Create the XmlReader object.
Using reader As XmlReader =
XmlReader.Create(businessDocument.SchemaInfo.Schem aAttribute.SchemaType.SourceUri, settings)

' Parse the file.
While reader.Read()
End While

End Using
When I run the app, I get an error that the parameter inputURI was not
recognized as a valid URI. Thus, this is the problem statement.

Using reader As XmlReader =
XmlReader.Create(businessDocument.SchemaInfo.Schem aAttribute.SchemaType.SourceUri, settings)

I have tried all kinds of baseURI, NamespaceURI, SourceURI combos and just
can't seem to get it. So, my very specific question is

How do I specify the inputURI for the document to be validated in creating
the XMLReader? This does NOT work
"businessDocument.SchemaInfo.SchemaAttribute.Schem aType.SourceUri"

Thanks
--
John
"JT" wrote:

Hi all,
As you know, the XMLValidatingReader is deprecated in .NET 2.0. I have the
following snippet from a .NET 1.1 implementation that I am struggling to
upgrade. I know I should use XMLReader.Create, but am struggling to get much
further. Any help would be appreciated. Thanks.

Public Shared Sub ValidateDocument(businessDocument As XmlDocument,
schemaStrongName As String)
' Constants
Const PARTS_IN_SCHEMA_STRONG_NAME As Integer = 2
Const PART_CLASS_NAME As Integer = 0
Const PART_QUALIFIED_ASSEMBLY_NAME As Integer = 1

' Parse schema strong name
Dim assemblyNameParts As String() = schemaStrongName.Split(New Char()
{","c}, PARTS_IN_SCHEMA_STRONG_NAME)
Dim className As String = assemblyNameParts(PART_CLASS_NAME).Trim()
Dim fullyQualifiedAssemblyName As String =
assemblyNameParts(PART_QUALIFIED_ASSEMBLY_NAME).Tr im()

' Load assembly
Dim schemaAssembly As [Assembly] =
[Assembly].Load(fullyQualifiedAssemblyName)

' Create instance of the BTS schema in order to get to the actual schemas
Dim schemaType As Type = schemaAssembly.GetType(className)
Dim btsSchemaCollection As Microsoft.XLANGs.BaseTypes.SchemaBase =
CType(Activator.CreateInstance(schemaType),
Microsoft.XLANGs.BaseTypes.SchemaBase)

' Set up XML validating reader and validate document
Dim parserContext As New XmlParserContext(Nothing, Nothing, "",
XmlSpace.None)
Dim reader As New XmlValidatingReader(businessDocument.OuterXml,
XmlNodeType.Document, parserContext)
reader.ValidationType = ValidationType.Schema
reader.Schemas.Add(btsSchemaCollection.SchemaColle ction)
While reader.Read()
End While
End Sub 'ValidateDocument

--
John

[Kevin Yu [MSFT]]

Hi John,

Based on my understanding, you're trying to validate an Xml given an
XmlDocument. If there is any misunderstanding, please feel free to let me
know.

In .NET 2.0, schema validation is supported by XmlDocument, you can use
XmlDocument.Validate to validate it directly. Here is a good example.

http://msdn2.microsoft.com/en-us/library/ms162371.aspx

Kevin Yu
Microsoft Online Community Support

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[Kevin Yu [MSFT]]

Hi John,

The example in the document uses XmlReader.Create because it need to read
from a reader. You can directly load from a file or something else. Here I
wrote an example on my machine and hope it helps.

private void Form1_Load(object sender, EventArgs e)
{
XmlSchema sch = XmlSchema.Read(new
XmlTextReader(@"c:\xmlxsdProblem.xsd"), null);
XmlDocument doc = new XmlDocument();
doc.Schemas.Add(sch);
doc.Load(@"c:\xmlxsdProblem.xml");
ValidationEventHandler a = new
ValidationEventHandler(Validationhandler);
doc.Validate(a);
}

public void Validationhandler(Object sender, ValidationEventArgs e)
{
//....
}

Kevin Yu
Microsoft Online Community Support
==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)

[=?Utf-8?B?SlQ=?=]

Thank you very much Kevin.
--
John
"Kevin Yu [MSFT]" wrote:

Hi John,

The example in the document uses XmlReader.Create because it need to read
from a reader. You can directly load from a file or something else. Here I
wrote an example on my machine and hope it helps.

private void Form1_Load(object sender, EventArgs e)
{
XmlSchema sch = XmlSchema.Read(new
XmlTextReader(@"c:\xmlxsdProblem.xsd"), null);
XmlDocument doc = new XmlDocument();
doc.Schemas.Add(sch);
doc.Load(@"c:\xmlxsdProblem.xml");
ValidationEventHandler a = new
ValidationEventHandler(Validationhandler);
doc.Validate(a);
}

public void Validationhandler(Object sender, ValidationEventArgs e)
{
//....
}

Kevin Yu
Microsoft Online Community Support
==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)

[cduffy]

Hi Kevin,

So the alternative is to load the load the entire document into ram?
Is there really no stream based validator in 2.0?

Chuck
Kevin Yu [MSFT] wrote:

Hi John,

The example in the document uses XmlReader.Create because it need to read
from a reader. You can directly load from a file or something else. Here I
wrote an example on my machine and hope it helps.

private void Form1_Load(object sender, EventArgs e)
{
XmlSchema sch = XmlSchema.Read(new
XmlTextReader(@"c:\xmlxsdProblem.xsd"), null);
XmlDocument doc = new XmlDocument();
doc.Schemas.Add(sch);
doc.Load(@"c:\xmlxsdProblem.xml");
ValidationEventHandler a = new
ValidationEventHandler(Validationhandler);
doc.Validate(a);
}

public void Validationhandler(Object sender, ValidationEventArgs e)
{
//....
}

Kevin Yu
Microsoft Online Community Support
==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)

[Christian Loris]

Hi all,
As you know, the XMLValidatingReader is deprecated in .NET 2.0. I have the
following snippet from a .NET 1.1 implementation that I am struggling to
upgrade. I know I should use XMLReader.Create, but am struggling to get much
further. Any help would be appreciated. Thanks.

Public Shared Sub ValidateDocument(businessDocument As XmlDocument,
schemaStrongName As String)
' Constants
Const PARTS_IN_SCHEMA_STRONG_NAME As Integer = 2
Const PART_CLASS_NAME As Integer = 0
Const PART_QUALIFIED_ASSEMBLY_NAME As Integer = 1

' Parse schema strong name
Dim assemblyNameParts As String() = schemaStrongName.Split(New Char()
{","c}, PARTS_IN_SCHEMA_STRONG_NAME)
Dim className As String = assemblyNameParts(PART_CLASS_NAME).Trim()
Dim fullyQualifiedAssemblyName As String =
assemblyNameParts(PART_QUALIFIED_ASSEMBLY_NAME).Tr im()

' Load assembly
Dim schemaAssembly As [Assembly] =
[Assembly].Load(fullyQualifiedAssemblyName)

' Create instance of the BTS schema in order to get to the actual schemas
Dim schemaType As Type = schemaAssembly.GetType(className)
Dim btsSchemaCollection As Microsoft.XLANGs.BaseTypes.SchemaBase =
CType(Activator.CreateInstance(schemaType),
Microsoft.XLANGs.BaseTypes.SchemaBase)

' Set up XML validating reader and validate document
Dim parserContext As New XmlParserContext(Nothing, Nothing, "",
XmlSpace.None)
Dim reader As New XmlValidatingReader(businessDocument.OuterXml,
XmlNodeType.Document, parserContext)
reader.ValidationType = ValidationType.Schema
reader.Schemas.Add(btsSchemaCollection.SchemaColle ction)
While reader.Read()
End While
End Sub 'ValidateDocument

--
John

I just ran into the same problem you are having and here is the result of my conversion. You can read the article on my blog:
http://www.implementsivillage.net/Pe...9b5502b44.aspx
Let me know if this is helpful!
Christian Loris
http://www.implementsivillage.net

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