xml validation against dtd

[Jon L. Lovesky]

Hello

I need to validate xml files against dtd files, however the xml files I will
receive will not have the correct path to the dtd on my end. The declaration
in the xml is not qualified, it's just the dtd filename, so I figure I can
always copy the xml file to the same directory as the dtd then read/validate
the xml, however this is not an optimal solution.

Can anyone tell me if it is possible to explicitly define the path to the
dtd file when validating? I am currently using the XMLValidatingReader.

Thanks in advance

Jon

[Bennie Haelen]

HI Jon,

Indeed, you can use a pre-set path. See the example below:

public class Class1
{
static void Main()
{
XmlTextReader reader = new XmlTextReader("test.xml");
XmlValidatingReader valReader = new XmlValidatingReader(reader);
valReader.ValidationEventHandler += new ValidationEventHandler
(OnValidationError);
while (valReader.Read())
{
}
}

private static void OnValidationError(object sender, ValidationEventArgs
e)
{
Console.WriteLine(e.Message);
}
}
"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..

Hello

I need to validate xml files against dtd files, however the xml files I will receive will not have the correct path to the dtd on my end. The declaration in the xml is not qualified, it's just the dtd filename, so I figure I can
always copy the xml file to the same directory as the dtd then read/validate the xml, however this is not an optimal solution.

Can anyone tell me if it is possible to explicitly define the path to the
dtd file when validating? I am currently using the XMLValidatingReader.

Thanks in advance

Jon

[Jon L. Lovesky]

Let me give a little more detail. This is a portion of my xml file:

--snip--

<?xml version = "1.0" encoding = "us-ascii"?>

<!DOCTYPE PurchaseOrder
PUBLIC "-//asds//DTD PO//EN"
"PO.dtd">

--snip--

Notice that the DOCTYPE declaration references PO.dtd. I need to specify the
location of the dtd, as it will most likely not be in the same location as
the source xml file.

Jon

"Bennie Haelen" <be***********@jda.com> wrote in message
news:u8**************@TK2MSFTNGP10.phx.gbl...

HI Jon,

Indeed, you can use a pre-set path. See the example below:

public class Class1
{
static void Main()
{
XmlTextReader reader = new XmlTextReader("test.xml");
XmlValidatingReader valReader = new XmlValidatingReader(reader);
valReader.ValidationEventHandler += new ValidationEventHandler
(OnValidationError);
while (valReader.Read())
{
}
}

private static void OnValidationError(object sender, ValidationEventArgs e)
{
Console.WriteLine(e.Message);
}
}
"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..

Hello

I need to validate xml files against dtd files, however the xml files I

will

receive will not have the correct path to the dtd on my end. The

declaration

in the xml is not qualified, it's just the dtd filename, so I figure I can always copy the xml file to the same directory as the dtd then

read/validate

the xml, however this is not an optimal solution.

Can anyone tell me if it is possible to explicitly define the path to the dtd file when validating? I am currently using the XMLValidatingReader.

Thanks in advance

Jon

Hi Jon,

You should be able to specify either a URL, or a valid local file path (if
you have the DTD local, which is a lot faster anyway).
instead of "PO.DTD", so for example, you can have:
<!DOCTYPE PurchaseOrder PUBLIC "-//asds//DTD PO//EN"
"c:\MyDtds\PO.dtd">

Bennie Haelen

"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..

Let me give a little more detail. This is a portion of my xml file:

--snip--

<?xml version = "1.0" encoding = "us-ascii"?>

<!DOCTYPE PurchaseOrder
PUBLIC "-//asds//DTD PO//EN"
"PO.dtd">

--snip--

Notice that the DOCTYPE declaration references PO.dtd. I need to specify the location of the dtd, as it will most likely not be in the same location as
the source xml file.

Jon

"Bennie Haelen" <be***********@jda.com> wrote in message
news:u8**************@TK2MSFTNGP10.phx.gbl...

HI Jon,

Indeed, you can use a pre-set path. See the example below:

public class Class1
{
static void Main()
{
XmlTextReader reader = new XmlTextReader("test.xml");
XmlValidatingReader valReader = new XmlValidatingReader(reader);
valReader.ValidationEventHandler += new ValidationEventHandler
(OnValidationError);
while (valReader.Read())
{
}
}

private static void OnValidationError(object sender,

ValidationEventArgs

e)
{
Console.WriteLine(e.Message);
}
}
"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..

Hello

I need to validate xml files against dtd files, however the xml files I

will

receive will not have the correct path to the dtd on my end. The

declaration

in the xml is not qualified, it's just the dtd filename, so I figure I can always copy the xml file to the same directory as the dtd then

read/validate

the xml, however this is not an optimal solution.

Can anyone tell me if it is possible to explicitly define the path to the dtd file when validating? I am currently using the

XMLValidatingReader.
Thanks in advance

Jon

[Jon L. Lovesky]

Hi Bennie

The xml files are created by a customers software, so I don't have the
option of editing the xml. They provided the dtd files and are requiring
that we validate incoming documents.

Can the path to the dtd be set programmatically in a validation object
somehow? or can the doctype be overridden? I haven't seen any examples of
this so I'm thinking I may be forced to just copy the xml to the same folder
as the dtd then read/validate.

Jon

<ha*****@bellsouth.net> wrote in message
news:eb**************@TK2MSFTNGP09.phx.gbl...

Hi Jon,

You should be able to specify either a URL, or a valid local file path (if
you have the DTD local, which is a lot faster anyway).
instead of "PO.DTD", so for example, you can have:
<!DOCTYPE PurchaseOrder PUBLIC "-//asds//DTD PO//EN"
"c:\MyDtds\PO.dtd">

Bennie Haelen

"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..

Let me give a little more detail. This is a portion of my xml file:

--snip--

<?xml version = "1.0" encoding = "us-ascii"?>

<!DOCTYPE PurchaseOrder
PUBLIC "-//asds//DTD PO//EN"
"PO.dtd">

--snip--

Notice that the DOCTYPE declaration references PO.dtd. I need to specify the

location of the dtd, as it will most likely not be in the same location as

the source xml file.

Jon

"Bennie Haelen" <be***********@jda.com> wrote in message
news:u8**************@TK2MSFTNGP10.phx.gbl...

HI Jon,

Indeed, you can use a pre-set path. See the example below:

public class Class1
{
static void Main()
{
XmlTextReader reader = new XmlTextReader("test.xml");
XmlValidatingReader valReader = new XmlValidatingReader(reader); valReader.ValidationEventHandler += new ValidationEventHandler
(OnValidationError);
while (valReader.Read())
{
}
}

private static void OnValidationError(object sender,

ValidationEventArgs

e)
{
Console.WriteLine(e.Message);
}
}
"Jon L. Lovesky" <jo**@willowrunfoods.com> wrote in message
news:40***********************@news.twtelecom.net. ..
> Hello
>
> I need to validate xml files against dtd files, however the xml

files I will
> receive will not have the correct path to the dtd on my end. The
declaration
> in the xml is not qualified, it's just the dtd filename, so I figure

I can

> always copy the xml file to the same directory as the dtd then
read/validate
> the xml, however this is not an optimal solution.
>
> Can anyone tell me if it is possible to explicitly define the path

to the

> dtd file when validating? I am currently using the

XMLValidatingReader. >
> Thanks in advance
>
> Jon
>
>

[Oleg Tkachenko [MVP]]

Jon L. Lovesky wrote:

The xml files are created by a customers software, so I don't have the
option of editing the xml. They provided the dtd files and are requiring
that we validate incoming documents.

Can the path to the dtd be set programmatically in a validation object
somehow? or can the doctype be overridden? I haven't seen any examples of
this so I'm thinking I may be forced to just copy the xml to the same folder
as the dtd then read/validate.

You can provide custom XmlResolver to XmlValidatingReader and resolve
PO.dtd to actual PO.dtd location in it.
--
Oleg Tkachenko [XML MVP, XmlInsider]
http://blog.tkachenko.com