private bool IsReloadingPossible(COMException exception)
{
_tracer.TraceException(exception);
return(COM_Error.IsRPC_ServerIsUnavailable(exception) ||
COM_Error.RemoteProcCallFailed(exception));
}
private string GetDocumentText(object path, int tryCount)
{
if (tryCount++ > 1)
{
return(string.Empty);
}
Word.Documents documents = null;
try
{
if (_MSWord == null)
{
if (!LoadWordInstance())
{
return(string.Empty);
}
}
documents = _MSWord.Documents;
}
catch (InvalidCastException exception)
{
_tracer.TraceException(exception);
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
catch (System.Runtime.InteropServices.COMException exception)
{
_tracer.TraceException(exception);
if (IsReloadingPossible(exception))
{
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
return(string.Empty);
}
catch (Exception exception)
{
_tracer.TraceException(exception);
return(string.Empty);
}
Word.Document doc = null;
string bodyText = string.Empty;
object pass = "******";
try
{
DisableAutomationSecurity();
doc = documents.Open(ref path, ref FALSE, ref TRUE, ref FALSE,
ref pass,
ref MissingValue, ref MissingValue, ref MissingValue, ref MissingValue,
ref MissingValue,
ref MissingValue, ref MissingValue);
Word.Range range = doc.Content;
bodyText = range.Text;
}
catch (System.Runtime.InteropServices.COMException exception)
{
_tracer.TraceException(exception);
if (IsReloadingPossible(exception))
{
_tracer.Trace("Try to load new instance of MS Word");
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
if (COM_Error.CouldNotOpenMacroStorage(exception)) //This exception leads to not closed documents
{
LoadWordInstance();
return(string.Empty);
}
}
catch (InvalidCastException exception)
{
_tracer.TraceException(exception);
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
catch (Exception exception)
{
_tracer.TraceException(exception);
return(string.Empty);
}
RestoreAutomationSecurity();
try
{
if (doc != null)
{
doc.Close(ref FALSE, ref MissingValue, ref MissingValue);
}
return(bodyText);
}
catch (System.Runtime.InteropServices.COMException exception)
{
if (IsReloadingPossible(exception))
{
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
}
catch (InvalidCastException exception)
{
_tracer.TraceException(exception);
return(GetDocumentTextWithReloadingWord(path, tryCount));
}
catch (Exception exception)
{
_tracer.TraceException(exception);
}
return(string.Empty);
}
