Instantiate a Schema from a string?

[PIEBALD]

An XML Schema document is an XML document, and (in .net) an XML document can
be loaded from a string. Is there a simple way to load an XML Schema document
from a string? The closest I can see is to wrap the string in a stream and
pass the stream to the constructor.

Stepping back further, I might want to load the XML Schema into an XML
document object and validate it to be sure it's a valid XML Schema before I
try to instantiate the Schema object. Shouldn't this simple?

Basically, whether it's a silly thing to do or not, I want to accept a
string, validate it as a Schema, and use it to validate some other string.

[Martin Honnen]

PIEBALD wrote:

An XML Schema document is an XML document, and (in .net) an XML document can
be loaded from a string. Is there a simple way to load an XML Schema document
from a string? The closest I can see is to wrap the string in a stream and
pass the stream to the constructor.

You do not need a stream, you can simply read in the string with a
StringReader <http://msdn2.microsoft .com/en-us/library/z042k543.aspxe. g.

XmlReaderSettin gs readerSettings = new XmlReaderSettin gs();
readerSettings. ValidationType = ValidationType. Schema;
readerSettings. ValidationEvent Handler += delegate (object sender,
ValidationEvent Args vargs) {
Console.WriteLi ne("{0}: {1}", vargs.Severity, vargs.Message);
};
readerSettings. Schemas.Add(nul l, XmlReader.Creat e(new
StringReader(st ringWithSchemaM arkup));

// now use readerSettings for validating reader
using (XmlReader reader = XmlReader.Creat e(new
StringReader(st ringWithXMLMark up), readerSettings) ) {
reader.Read();
}

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[PIEBALD]

You do not need a stream, you can simply read in the string with a

StringReader <http://msdn2.microsoft .com/en-us/library/z042k543.aspxe. g.

My mistake, I was under the impression that StringReader derived from Stream.

I was essentially hoping the details of instantiating the StringReader could
be hidden.

But now I see the difficulty, It's the XmlReader.Creat e(), if given a string
it must be a URI, not a document. Very well, thank you for the sample.