Where do you have the schema file located? In VS 2003 it has to be located
in the \schemas directory under the VS folder.

"peter" <peter@d...> wrote in message
news:5CA3F6D6-CABB-46B9-8C0B-6FEA40F9D9CA@m......
> Hi everyone,
>
> i have a simple xml document and its xsd as attached below. When i try to
> validate the xml in VS.net 2003 by clicking [XML->Validate XML Data] menu,
I
> got the error:
> C:\PlantStructure.xml(1): The 'urn:myschema-aprs:PlantStructure' element
is
> not declared. An error occurred at , (1, 2).
> C:\PlantStructure.xml(1): Visual Studio could not locate a schema for this
> document. Validation can only ensure this is a well formed XML document
and
> cannot validate the data against a schema.
> ...
>
> Both files are localed under c:> My VS.net 2003 build number is 7.1.3088, and .net framework is 1.1.4322
>
> Can anyone help me to figure it out?
> Thanks
>
> PlantStructure.xsd:
> <?xml version="1.0"?>
> <xsd:schema id="aprs" targetNamespace="urn:myschema-aprs"
> xmlns="urn:myschema-aprs" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
> xmlns:msdata="urn:schemas-microsoft-com:xml-msdata"
> attributeFormDefault="unqualified" elementFormDefault="qualified">
> <xsd:simpleType name="ItemTag">
> <xsd:restriction base="xsd:string">
> <xsd:minLength value="0"/>
> <xsd:maxLength value="100"/>
> </xsd:restriction>
> </xsd:simpleType>
> <xsd:simpleType name="Active">
> <xsd:restriction base="xsd:int">
> <xsd:minInclusive value="0"/>
> <xsd:maxInclusive value="1"/>
> </xsd:restriction>
> </xsd:simpleType>
> <xsd:simpleType name="ObjectType">
> <xsd:restriction base="xsd:int">
> <xsd:minInclusive value="1"/>
> <xsd:maxInclusive value="2"/>
> </xsd:restriction>
> </xsd:simpleType>
> <xsd:simpleType name="ObjectName">
> <xsd:restriction base="xsd:string">
> <xsd:minLength value="0"/>
> <xsd:maxLength value="50"/>
> </xsd:restriction>
> </xsd:simpleType>
>
>   <xsd:element name="PlantStructure" msdata:IsDataSet="true"
> msdata:EnforceConstraints="False">
>     <xsd:complexType>
>       <xsd:choice maxOccurs="unbounded">
>         <xsd:element name="Object">
>           <xsd:complexType>
>             <xsd:attribute name="ObjectID" type="ItemTag" />
>             <xsd:attribute name="ObjectType" type="ObjectType" />
>             <xsd:attribute name="ParentID" type="ItemTag" />
>             <xsd:attribute name="ObjectName" type="ObjectName" />
>             <xsd:attribute name="Active" type="Active" />
>           </xsd:complexType>
>         </xsd:element>
>       </xsd:choice>
>     </xsd:complexType>
>   </xsd:element>
> </xsd:schema>
>
>
> PlantStructure.xml:
>
> <PlantStructure xmlns="urn:myschema-aprs"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="urn:myschema-aprs PlantStructure.xsd">
> <Object ObjectID="./2.1/2.1" ObjectType="1" ParentID="" ObjectName="My
> plant" Active="1" />
> <Object ObjectID="./2.6/2.6" ObjectType="1" ParentID="./2.1/2.1"
> ObjectName="Line 1" Active="1" />
> <Object ObjectID="./2.2/2.2" ObjectType="1" ParentID="./2.6/2.6"
> ObjectName="Loop 1" Active="1" />
> <Object ObjectID="./2.3/2.3" ObjectType="1" ParentID="./2.6/2.6"
> ObjectName="Loop 2" Active="1" />
> <Object ObjectID="./2.4/2.4" ObjectType="1" ParentID="./2.6/2.6"
> ObjectName="Loop 3" Active="1" />
> </PlantStructure>
>