XMLTextReader - root element is missing

[Cheryl Gilbert]

I'm sending xml to a web service by building a string dynamically.
When my web service tries to validate the xml with a schema, I'm
getting the error "the root element is missing". If I use an xml file
saved to disk, I don't get an error.

Does anyone know what the problem could be?

- Cheryl

Public Function ValidateXML(ByV al sXML As String) As String

Dim strReader As StringReader
strReader = New StringReader(sX ML)

Dim tr As XmlTextReader = New XmlTextReader(s trReader)
Dim sc As XmlSchemaCollec tion = New XmlSchemaCollec tion
Dim vr As XmlValidatingRe ader = New XmlValidatingRe ader(tr)

Try

sc.Add(Nothing, "c:\FFRMA\Test. xsd")
vr.ValidationTy pe = ValidationType. Schema
vr.Schemas.Add( sc)

AddHandler vr.ValidationEv entHandler, AddressOf ValidationCallB ack

While (vr.Read())

End While

sErrorMsg = "Success"

Catch ex As Exception

sErrorMsg = ex.Message & ":" & ex.Source

Finally

ValidateXML = sErrorMsg

End Try

[Oleg Tkachenko [MVP]]

Cheryl Gilbert wrote:

I'm sending xml to a web service by building a string dynamically.
When my web service tries to validate the xml with a schema, I'm
getting the error "the root element is missing". If I use an xml file
saved to disk, I don't get an error.

Must be some junk before root element. Debug and see what is passed
string. It might be also encoding issue.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Cheryl Gilbert]

There is nothing before the root element. I've printed the string to the
debug widow, and validated the string in XMLSpy

What possible encoding issue could it be?

Thank you,

Cheryl

"Oleg Tkachenko [MVP]" <oleg@NO!SPAM!P LEASEtkachenko. com> wrote in message
news:OV******** ******@TK2MSFTN GP12.phx.gbl...

Cheryl Gilbert wrote:

I'm sending xml to a web service by building a string dynamically.
When my web service tries to validate the xml with a schema, I'm
getting the error "the root element is missing". If I use an xml file
saved to disk, I don't get an error.

Must be some junk before root element. Debug and see what is passed
string. It might be also encoding issue.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Oleg Tkachenko [MVP]]

Cheryl Gilbert wrote:

There is nothing before the root element. I've printed the string to the
debug widow, and validated the string in XMLSpy

Well, can you show some repro?

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Amol Kher [MSFT]]

Does it provide you any line information where this is happening? If its an
encoding issue, its generally after the xml declaration. However seeing the
line information may help? Send the XML if you want us to take a look.

Thanks,
Amol

"Cheryl Gilbert" <cg******@finan cialfreedom.com > wrote in message
news:en******** ******@TK2MSFTN GP12.phx.gbl...

There is nothing before the root element. I've printed the string to the
debug widow, and validated the string in XMLSpy

What possible encoding issue could it be?

Thank you,

Cheryl

"Oleg Tkachenko [MVP]" <oleg@NO!SPAM!P LEASEtkachenko. com> wrote in message
news:OV******** ******@TK2MSFTN GP12.phx.gbl...

Cheryl Gilbert wrote:

I'm sending xml to a web service by building a string dynamically.
When my web service tries to validate the xml with a schema, I'm
getting the error "the root element is missing". If I use an xml file
saved to disk, I don't get an error.

Must be some junk before root element. Debug and see what is passed
string. It might be also encoding issue.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com