MS XML Strange Error

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2.Strange XMLA error

When trying to use XMLA locally, it fails (note it does work when I access 
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In the application event log, I find:



The description for Event ID ( 10 ) in Source ( MSOLAP ISAPI Extension: 
\\?\c:\inetpub\wwwroot\olap\msmdpump.dll ) cannot be found. The local 
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files to display messages from a remote computer. You may be able to use the 
/AUXSOURCE= flag to retrieve this description; see Help and Support for 
details. The following information is part of the event: .

3.Very Strange XML/A Error - Nothing in Google

4.Strange error validating XML against XSD

Hello,

I've developed a .NET C# web service; which has one method named, let's say, 
upload_your_data. This method has one parameter ( string your_data). The 
value that this parameter will actually have is the content of a XML 
document. This data will be processed and check for a well-formed xml 
document and will be validated against a XSD. Before putting my code, let me 
go on and explain the whole situation.

This web method is invoked by some guys outside my organization and they are 
using java applications (jsp's it seems to be).
I've tested my web method locally (intranet) from the test page (the one 
with the "invoke" button) and works fine. Also, I have tested my web service 
using a .NET Windows App which loads a XML file and invokes the web method to 
upload the content of the file and works perfectly. Moreover I tested the web 
service with this windows app from my home connected to the internet via my 
ISP and invoking the web method directly from my company's web server. This 
test was also completed successfully.
And, if this is not enough testing, I enabled the httpget and httppost 
methods to enable the web method to be tested remotely using the test page. 
I've done this with some of my friends.

However these guys from this other company, have a java application which 
invokes my web method and it fails exactly when the XSD is performed. It 
throws this error: The data at the root level is invalid. Line 1, position 1.

If, for example the content of the XML is simply: 

<this is my 
nam<

I receive exactly that string (I check the value of the web method's 
parameter: your_data, which is a string variable) when testing the web method 
with my testing apps. But when these guys invoke the method, the value that I 
get from them is:

<this is my 
name<

Instead of the first one (the one that you can read "normally"). And not to 
mention the characters for all the "special" Spanish letters that will appear 
when more tags are present.
What can be wrong? Is it me or they ? The one responsible for receiving or 
sending the context is such way. I don't know how they generate the xml 
document, whether it's stored on a database or loaded from a physical file.
These guys say that I'm not applying the "right encoding" to the data that 
they're sending; but fail to answer me which one they're using.

Please help. 

This is my web methods code:

[WebMethod]
public string upload_your_data(string your_data)
{
   StringReader srReaderXML; 

   try
   {
      //
     // reading the xml doc
     //
     srReaderXML = new StringReader(your_data);
     //
     // loading the XML (check for a well-formed doc) and XSD
    //
     XmlTextReader xtrDocXML = new XmlTextReader(srReaderXML);
     XmlTextReader xtrDocXSD = new XmlTextReader
     (ConfigurationSettings.AppSettings["XSDPath"].ToString() + 
     ConfigurationSettings.AppSettings["XSDFileName"].ToString());
    //
    // loading the schema (XSD)
    //
    XmlSchema xsDocXSD = new XmlSchema();
    xsDocXSD = XmlSchema.Read(xtrDocXSD,null);
    XmlSchemaCollection xscSchemaColeccion = new XmlSchemaCollection();
    xscSchemaColeccion.Add(xsDocXSD);
    //
    // validating the XML doc against the XSD
    //
    XmlValidatingReader xvrValidatorDocXML = new XmlValidatingReader
    (xtrDocXML);
    xvrValidatorDocXML.Schemas.Add(xscSchemaColeccion);
    xvrValidatorDocXML.ValidationType = ValidationType.Schema;
    while(xvrValidatorDocXML.Read()); // the exception is thrown here
    xvrValidadorDocXML.Close();
    
    return "this is right"
  }
  catch(Exception ex)
  {
     return "this is wrong + ex.Message;
  }
}

Thank you !!
Cesar

5.Very strange error: CLR has been unable to transition from COM context

I ran into a very strange error tonight. I was working with web services 
and typed datasets. The web server I was using happens to be on the 
other end of a virtual network (Hamachi).

Everything was working fine. I added one more row of data to the table 
and all of a sudden one web method started failing. I initially thought 
the web service was timing out but after a while the following exception 
was thrown:

The CLR has been unable to transition from COM context 0x1a2008 to COM 
context 0x1a2178 for 60 seconds

I thought there might be some funny stuff going on since it was working 
fine just moments ago. So, I rebooted both boxes, tried VS 2005 and 
VS2003 on the client end. (VS2003 is running on the web server side.) 
The client would not work remotely, but if I ran the client locally on 
the server, it would work fine.

I was running out of ideas and decided to delete the last couple rows I 
added from the database and everything started working again. Crazy. I 
hope this doesn't happen in production -- can't really just delete 
production rows to get something to work. (There was nothing odd about 
the data, no SQL injection etc.)

I believe the line of code it was failing on (and hence the post in this 
newsgroup) was in the web reference generated code:
        protected override void ReadXmlSerializable(XmlReader reader) {
            this.Reset();
            DataSet ds = new DataSet();
            ds.ReadXml(reader);  // <------------ CRASH HERE
            if ((ds.Tables["OrganizationList"] != null)) {
                this.Tables.Add(new OrganizationListDataTable(ds.Tables
["OrganizationList"]));
            }
            this.DataSetName = ds.DataSetName;
            this.Prefix = ds.Prefix;
            this.Namespace = ds.Namespace;
            this.Locale = ds.Locale;
            this.CaseSensitive = ds.CaseSensitive;
            this.EnforceConstraints = ds.EnforceConstraints;
            this.Merge(ds, false, System.Data.MissingSchemaAction.Add);
            this.InitVars();
        }

The fact that it was happening in both 2003 and 2005 makes me think 
there is something going wrong in the XML stack somewhere, but that's 
just a wild guess.

I thought I would post this incase other people get the same error. Good 
luck!

-- 
Don Rixtown
don[dot]rixtown[at]gmail[dot]com

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