c# - xsd schema not valid? -

I downloaded the official "schema of xsd".

\ Temp \ xsd.xsd ", FileMode.Open), valid); Sc.Compile (verify);

It has failed with the exception that she can not get some DTD.

Question number 1 : Why XSD schema defines XML can not handle legalization?

I removed the DTD definition from the top of the file and I found these (and many more) validation errors:

  "Restrictions on any type of typing" Not allowed. " 

Question number 2 : Why does the XSD schema effect fail?

I did it with XMLSkmat Set.add (...) and this worked .

Question no.3 : What is the difference between validating XmlSchema and XmlSchemaSet ?

Then I create a dummy schema which imports the XSD schema from the disk:

  <: Import namespace = "http: //www.w3. Org / 2001 / XMLSchema "schema location =" C: \ temp \ xsd.xsd "/>  

When I add this schema to the schema set then it's like the above

Question number 4 : Why is it different then to directly add the xsd schema (work)?

< P>

You need some other files Ogi referenced by the schema:

and. Once you download them, you can validate:

  class program {static void main () {var settings = new XmlReaderSettings (); Settings.ProhibitDtd = false; (Var reader = XmlReader.Create (using "XMLSchema.xsd", Settings)) {settings.Schemas.Add (XmlSchema.Read (reader, blank); } (Var reader = XmlReader.Create ("xsd.xsd", settings)) {// it throws when the XML file is not valid (reader.Read ()); }}}