[Mono-dev] urgent issue with reading xml into a dataset(System.InvalidCastException)

[Veerapuram Varadhan]

On Fri, 2008-04-04 at 12:52 +0300, Rosenberg, Shlomi wrote:
> How do I file a bug (sorry I'm new here)? 
> 
1) Goto http://bugzilla.novell.com
2) Create a user account for yourself and login to bugzilla
3) Click on "New" from the top-grey-band
4) Choose "Mono" as Classification (Product-line)
5) Choose "Mono: Class libraries" as Product and click "Use this
product"
6) Choose "System.Data" for Component and fill up the details and submit
the report.

If Bugzilla is not working, you can send in your sample to the list. 

HTH,

V. Varadhan

> -----Original Message-----
> From: Veerapuram Varadhan [mailto:vvaradhan at novell.com] 
> Sent: Friday, April 04, 2008 12:50 PM
> To: Rosenberg, Shlomi
> Cc: mono-devel-list at lists.ximian.com
> Subject: Re: [Mono-dev] urgent issue with reading xml into a dataset(System.InvalidCastException)
> 
> Hi Shlomi,
> 
> On Fri, 2008-04-04 at 09:09 +0300, Rosenberg, Shlomi wrote:
> > 
> > Hi,
> >  
> > I hava a dataset with a table containing the following row:
> > stepTable.Columns.Add("FuncXml", typeof(LabRat.LrtXml)); in the XML 
> > file it looks like this:
> > <FuncXml>
> >   <Func Name="CUT_IntPassiveIn()" Direction="PASSIVE_MOCK">
> >     <Param Name="paramLen" Type="int" Len="1" InOut="IN" Union="FALSE"
> > Callback="">
> >     </Param>
> >     <Param Name="single" Type="int" Len="1" InOut="IN" Union="FALSE"
> > Callback="">
> >     </Param>
> >     <Return Name="retVal" Type="int" Len="1" InOut="OUT" Union="FALSE"
> > Callback="">
> >     </Return>
> >   </Func>
> > </FuncXml>
> >  
> > LrtXml is a class that implements IXmlSerializable, and it works fine 
> > on .NET framework 2.0.
> >  
> > When running on Linux using mono, i keep getting:
> > System.InvalidCastException: Unknown target conversion type
> >   at System.Convert.ToType (System.Object value, System.Type 
> > conversionType, IFormatProvider provider) [0x00000]
> >   at System.Convert.ChangeType (System.Object value, System.Type
> > conversionType) [0x00000]
> >   at System.Data.XmlDataReader.StringToObject (System.Type type, 
> > System.String value) [0x00000]
> >   at System.Data.XmlDataReader.ReadElementElement (System.Data.DataRow
> > row) [0x00000]
> >   at System.Data.XmlDataReader.ReadElementContent (System.Data.DataRow
> > row) [0x00000]
> >   at System.Data.XmlDataReader.ReadElement (System.Data.DataRow row) 
> > [0x00000]
> >   at System.Data.XmlDataReader.ReadDataSetContent () [0x00000]
> >   at System.Data.XmlDataReader.ReadTopLevelElement () [0x00000]
> >   at System.Data.XmlDataReader.Process () [0x00000]
> >   at System.Data.XmlDataReader.ReadXml (System.Data.DataSet dataset, 
> > System.Xml.XmlReader reader, XmlReadMode mode) [0x00000]
> >   at System.Data.DataSet.ReadXml (System.Xml.XmlReader reader, 
> > XmlReadMode mode) [0x00000]
> >   at System.Data.DataSet.ReadXml (System.Xml.XmlReader r) [0x00000]
> >   at System.Data.DataSet.ReadXml (System.String str) [0x00000]
> >   at LabRat.LrtTestEngine.openLrs () [0x00000]
> 
> Can you file a bug and attach a test sample to reproduce this issue?
> IIUC, in Mono's System.Data.DataSet, the default implementation is to get the serialization data either from XML or binary data.  Your sample would help us understand the default of MS.NET and fix the issue.
> 
> TIA,
> 
> V. Varadhan
> 
> 
> 
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