Can I specify a local file location in the Uri parameter for XmlSchemaSet.Add() method?

Question

XmlSchemaSet.Add() method takes a Uri and target namespace, but when I try to pass in a local file location it produces an error.

_schemaUri = @"L:\schemaDoc.xsd";
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add(_schemaUri, _targetNamespace);

ERROR:

NotSupportedException was caught

The URI prefix is not recognized.

Answer 1

Yes. You have confused the parameters of the Add method. The first parameter is the target namespace, with the second being the URI. So your code should look like this:

_schemaUri = @"L:\schemaDoc.xsd";
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add(_targetNamespace, _schemaUri);

Refer to the documentation for more details:

http://msdn.microsoft.com/en-us/library/1hh8b082%28v=vs.110%29.aspx

Answer 2

According to the MSDN documentation, you have the schemaUri and targetNamespace parameters in the reverse order.

From MSDN:
XmlSchemaSet.Add Method (String, String) Adds the XML Schema definition language (XSD) schema at the URL specified to the XmlSchemaSet.

Namespace:  System.Xml.Schema
Assembly:  System.Xml (in System.Xml.dll)

public XmlSchema Add(
    string targetNamespace,
    string schemaUri
)

Parameters

targetNamespace
Type: System.String
The schema targetNamespace property, or null to use the targetNamespace specified in the schema.

schemaUri
Type: System.String
The URL that specifies the schema to load.  

http://msdn.microsoft.com/en-us/library/1hh8b082(v=vs.110).aspx