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Exception thrown outside debugger but not in debugger

Author
10 Mar 2006 2:22 PM
Chris Stiefeling
Hi,

I am experiencing a strange problem.  I am reading and writing xml files via
XmlDocument and XmlTextWriter.  In the debugger everything works fine but
outside the debugger I receive the following error:  "The
type initializer for "System.Xml.Schema.Validator" threw an exception.". 
When running from the debugger (debug or release) no exception is thrown.

I wrote a small console app that replicates the problem -- I've just attached
the default class which gets run.  Output outside the debugger is as follows

------------------
Creating xml file
Reading xml file
Error reading xml file
The type initializer for "System.Xml.Schema.Validator" threw an exception.

Press a key to exit
------------------

I know that this code worked at some point in time and I do not get the
error message when running debug or release from the debugger.  Runnning
WinXP SP2 and Visual Studio .Net 2003 (C#).  Please feel free to correct me
if I am doing something incorrectly or let me know if it runs error free for
you.

Thanks in advance,
Chris

<snip>
using System;
using System.IO;
using System.Xml;

namespace Test
{
    /// <summary>
    /// Summary description for Class1.
    /// </summary>
    class XmlProblem
    {
        private static string m_sXmlFile = @"C:\temp\test.xml";

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            //
            // TODO: Add code to start application here
            //

            CreateXMLFile();
            ReadXMLFile();
            Console.WriteLine("");
            Console.WriteLine("Press a key to exit");
            Console.ReadLine();
        }

        static void CreateXMLFile()
        {
            StreamWriter sw = null;

            try
            {
                Console.WriteLine("Creating xml file");

                sw = new StreamWriter(m_sXmlFile, false);
                XmlTextWriter xWriter = new XmlTextWriter(sw);
                xWriter.Formatting = Formatting.Indented;
                xWriter.Indentation = 3;
                xWriter.WriteStartDocument();
                xWriter.WriteStartElement("ApplicationSettings");
                xWriter.WriteEndElement();            // AppSettings
                xWriter.WriteEndDocument();
                xWriter.Flush();
                xWriter.Close();
            }
            catch(Exception ex)
            {
                Console.WriteLine("Error creating xml file " + ex.Message);
            }

            if (sw != null)
                sw.Close();
        }

        static void ReadXMLFile()
        {
            StreamReader sr = null;

            try
            {
                Console.WriteLine("Reading xml file");

                sr = new StreamReader(m_sXmlFile);
                string sFileContents = sr.ReadToEnd();

                XmlDocument xDoc = new XmlDocument();
                xDoc.LoadXml(sFileContents);
            }
            catch(Exception ex)
            {
                Console.WriteLine("Error reading xml file");
                Console.WriteLine(ex.Message);
            }

            if (sr != null)
                sr.Close();
        }

    }
}

</snip>

Author
10 Mar 2006 3:01 PM
Alvin Bruney - ASP.NET MVP
I ran your code under the debugger, then in release mode. No errors. Set the
debugger to break on all exceptions, No errors.

--
Warm Regards,
Alvin Bruney [MVP ASP.NET]

[Shameless Author plug]
The Microsoft Office Web Components Black Book with .NET
Now Available @ www.lulu.com/owc
Professional VSTO 2005 - Wrox/Wiley 2006
Blog: http://msmvps.com/blogs/Alvin/
-------------------------------------------------------



Show quoteHide quote
"Chris Stiefeling" <ChrisStiefel***@discussions.microsoft.com> wrote in
message news:C9A45C08-3CAC-420F-9369-67A396ED6796@microsoft.com...
> Hi,
>
> I am experiencing a strange problem.  I am reading and writing xml files
via
> XmlDocument and XmlTextWriter.  In the debugger everything works fine but
> outside the debugger I receive the following error:  "The
> type initializer for "System.Xml.Schema.Validator" threw an exception.".
> When running from the debugger (debug or release) no exception is thrown.
>
> I wrote a small console app that replicates the problem -- I've just
attached
> the default class which gets run.  Output outside the debugger is as
follows
>
> ------------------
> Creating xml file
> Reading xml file
> Error reading xml file
> The type initializer for "System.Xml.Schema.Validator" threw an exception.
>
> Press a key to exit
> ------------------
>
> I know that this code worked at some point in time and I do not get the
> error message when running debug or release from the debugger.  Runnning
> WinXP SP2 and Visual Studio .Net 2003 (C#).  Please feel free to correct
me
> if I am doing something incorrectly or let me know if it runs error free
for
> you.
>
> Thanks in advance,
> Chris
>
> <snip>
> using System;
> using System.IO;
> using System.Xml;
>
> namespace Test
> {
> /// <summary>
> /// Summary description for Class1.
> /// </summary>
> class XmlProblem
> {
> private static string m_sXmlFile = @"C:\temp\test.xml";
>
> /// <summary>
> /// The main entry point for the application.
> /// </summary>
> [STAThread]
> static void Main(string[] args)
> {
> //
> // TODO: Add code to start application here
> //
>
> CreateXMLFile();
> ReadXMLFile();
> Console.WriteLine("");
> Console.WriteLine("Press a key to exit");
> Console.ReadLine();
> }
>
> static void CreateXMLFile()
> {
> StreamWriter sw = null;
>
> try
> {
> Console.WriteLine("Creating xml file");
>
> sw = new StreamWriter(m_sXmlFile, false);
> XmlTextWriter xWriter = new XmlTextWriter(sw);
> xWriter.Formatting = Formatting.Indented;
> xWriter.Indentation = 3;
> xWriter.WriteStartDocument();
> xWriter.WriteStartElement("ApplicationSettings");
> xWriter.WriteEndElement(); // AppSettings
> xWriter.WriteEndDocument();
> xWriter.Flush();
> xWriter.Close();
> }
> catch(Exception ex)
> {
> Console.WriteLine("Error creating xml file " + ex.Message);
> }
>
> if (sw != null)
> sw.Close();
> }
>
> static void ReadXMLFile()
> {
> StreamReader sr = null;
>
> try
> {
> Console.WriteLine("Reading xml file");
>
> sr = new StreamReader(m_sXmlFile);
> string sFileContents = sr.ReadToEnd();
>
> XmlDocument xDoc = new XmlDocument();
> xDoc.LoadXml(sFileContents);
> }
> catch(Exception ex)
> {
> Console.WriteLine("Error reading xml file");
> Console.WriteLine(ex.Message);
> }
>
> if (sr != null)
> sr.Close();
> }
>
> }
> }
>
> </snip>
>

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