c# - XML validation with XSD getting invalid child element error and I have no idea why? -

using following invalid child element error. new xml , have been looking around net try , figure out have had no luck. have xsd verifying xml submitted application , works wonderfully using attributes instead of elements. can't work using elements in xsd validate xml being submitted through 3rd party application have no control over.

xsd

  
<?xml version="1.0" encoding="windows-1252"?> <xs:schema attributeformdefault="unqualified" elementformdefault="qualified"     xmlns:xs="http://www.w3.org/2001/xmlschema">   <xs:element name="sccaparticipationlist">     <xs:complextype>       <xs:sequence>         <xs:element maxoccurs="unbounded" name="entry">           <xs:complextype>             <xs:sequence>               <xs:element name="address" type="xs:string" minoccurs="0" />               <xs:element name="carmodel" type="xs:string" minoccurs="0" />               <xs:element name="carno" type="xs:string" minoccurs="0" />               <xs:element name="totaltm" type="xs:string" minoccurs="0" />               <xs:element name="besttm" type="xs:string" minoccurs="0" />               <xs:element name="region" type="xs:string" minoccurs="0" />               <xs:element name="memberno" type="xs:string" minoccurs="1" />               <xs:element name="firstname" type="xs:string" minoccurs="1" />               <xs:element name="lastname" type="xs:string" minoccurs="1" />               <xs:element name="class" type="xs:string" minoccurs="1" />               <xs:element name="pos" type="xs:string" minoccurs="1" />               <xs:element name="uniqueid" type="xs:string" minoccurs="0" />             </xs:sequence>           </xs:complextype>         </xs:element>       </xs:sequence>     </xs:complextype>   </xs:element> </xs:schema> 
  

xml

  
<?xml version="1.0"?> <sccaparticipationlist>   <entry>     <memberno>3333333</memberno>     <firstname>test</firstname>     <lastname>person</lastname>     <class>stt</class>     <pos>13</pos>     <carmodel>mazda miata</carmodel>     <address>123 test dr ,the woodlands tx,55555,us</address>   </entry>   <entry>     <memberno>2222222</memberno>     <firstname>john</firstname>     <lastname>doe</lastname>     <class>sio</class>     <pos>3t</pos>     <carmodel>subaru impreza</carmodel>     <address>111 test circle ,austin tx,77777,us</address>   </entry> </sccaparticipationlist> 
  

c#

  
protected boolean verifyxmlwelements(string strschemapath, string strxml)         {             try             {
                 byte[] bytearray = encoding.ascii.getbytes(strxml);                 memorystream stream = new memorystream(bytearray);                 xmltextreader xmlr = new xmltextreader(stream);                 xmlvalidatingreader xmlvread = new xmlvalidatingreader(xmlr);                 xmlvread.schemas.add(null, strschemapath);
  
            xmlvread.validationeventhandler += new validationeventhandler(validationcallback);              while (xmlvread.read()) { }              xmlvread.close();              if (interrcount > 0)             {                 interrcount--;                 throw new exception(strerrmessage);             }             strerrmessage = "xml validation succeeded!\r\n";             return true;         }         catch (exception ex)         {             interrcount++;             strerrmessage = "invalid xml - " + ex.message + interrcount.tostring() + " error(s)\r\n";             return false;         }     }      private void validationcallback(object sender, validationeventargs args)     {         if (args.message.tolower().contains("attribute not declared"))         {             return;         }         interrcount++;         return;     } 
  

at least 1 problem ordering entry child elements incorrectly. elements defined in sequence tag must appear in corresponding xml doc(s) in same order.

after validating sample xml against schema issue saw.

edit:

if have no control on input file's element order & not consistent & each child element of entry can appear maximum of once per entry, may want use all element instead of sequence.