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

Veerapuram Varadhan vvaradhan at novell.com
Fri Apr 4 16:58:23 EDT 2008


On Fri, 2008-04-04 at 22:52 +0300, Rosenberg, Shlomi wrote:
> Thanks. Done (Bug #377146).
> 
Thanks and just saw your attachment and the bug.  Will soon be worked
upon.

V. Varadhan

> Shlomi 
> 
> -----Original Message-----
> From: Veerapuram Varadhan [mailto:vvaradhan at novell.com] 
> Sent: Friday, April 04, 2008 1:09 PM
> To: Rosenberg, Shlomi
> Cc: mono-devel-list at lists.ximian.com
> Subject: RE: [Mono-dev] urgent issue with reading xml into adataset(System.InvalidCastException)
> 
> 
> 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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