Exception: The operation was canceled.

[strakamichal]

Hi all,
i need help with one exception. I know only .Message of this exception and i know which part of code throws it.

.Message: "The operation was canceled."

            try
            {
                FileIOPermission perm = new FileIOPermission(FileIOPermissionAccess.Write, file_name);
                perm.Assert();
                if (!additive && File.Exists(file_name)) File.Delete(file_name);
                using(FileStream fs = new FileStream(file_name, FileMode.OpenOrCreate, FileAccess.ReadWrite))
                {
                    using(StreamWriter writer = new StreamWriter(fs))
                    {
                        writer.BaseStream.Seek(0, SeekOrigin.End);    
                        writer.Write(content);    
                        writer.Flush();    
                        writer.Close();
                        result = true;
                    }
                    fs.Close();
                }
                CodeAccessPermission.RevertAssert();
            }
            catch (System.Exception err)
            {
                System.Diagnostics.Debug.WriteLine(err.Message);
                throw(err);
            }
 

FYI: This Windows application runs for many years, but once this error was occured and stored in log. Can somebody help me? Is anythere List of exception messages?

Thanks,
Michal

[arnaudk]

This uses the .NET Framework classes, you might have more luck posting this question in the .NET forum.