news:1171309842.239635.296310@j27g2000cwj.googlegroups.com...
> Hello all,
>
> I am sure there is a simple answer to this question.  There just isn't
> a simple way to describe it for a search engine.
>
> I have a vb.net program consisting of several windows forms,
> miscellanenous classes, and modules.  I want all of these classes to
> access and update the same instance of an ado dataset and I'm unable
> to do it. I thought I could simply create a new instance of the
> dataset in a public module.  I can't;  I still lose all information
> storied in the datatable by a child routine as soon as that routine
> "returns" to the parent.
>
> Ofcourse I could reference the dataset in every function and
> explicitly 'return' it at the end, but that seems unecessarily
> complex, particularly since many of the functions that are updating
> the dataset are already returning other information.  Can anyone tell
> me what the procedure is to define a common dataset instance?
>

On Feb 12, 2:00 pm, "Marina Levit [MVP]" <mari***@comcast.net> wrote:
> If you had a pointer to that dataset (or any object) in a module, it would
> not get lost when any function returned. It sounds like you weren't doing it
> right, perhaps posting relevant code would help.
>
> <bida***@yahoo.com> wrote in message
>
> news:1171309842.239635.296310@j27g2000cwj.googlegroups.com...
>
>
>
> > Hello all,
>
> > I am sure there is a simple answer to this question.  There just isn't
> > a simple way to describe it for a search engine.
>
> > I have a vb.net program consisting of several windows forms,
> > miscellanenous classes, and modules.  I want all of these classes to
> > access and update the same instance of an ado dataset and I'm unable
> > to do it. I thought I could simply create a new instance of the
> > dataset in a public module.  I can't;  I still lose all information
> > storied in the datatable by a child routine as soon as that routine
> > "returns" to the parent.
>
> > Ofcourse I could reference the dataset in every function and
> > explicitly 'return' it at the end, but that seems unecessarily
> > complex, particularly since many of the functions that are updating
> > the dataset are already returning other information.  Can anyone tell
> > me what the procedure is to define a common dataset instance?- Hide quoted text -
>
> - Show quoted text -

"bida***@yahoo.com" wrote:

> On Feb 12, 2:00 pm, "Marina Levit [MVP]" <mari***@comcast.net> wrote:
> > If you had a pointer to that dataset (or any object) in a module, it would
> > not get lost when any function returned. It sounds like you weren't doing it
> > right, perhaps posting relevant code would help.
> >
> > <bida***@yahoo.com> wrote in message
> >
> > news:1171309842.239635.296310@j27g2000cwj.googlegroups.com...
> >
> >
> >
> > > Hello all,
> >
> > > I am sure there is a simple answer to this question.  There just isn't
> > > a simple way to describe it for a search engine.
> >
> > > I have a vb.net program consisting of several windows forms,
> > > miscellanenous classes, and modules.  I want all of these classes to
> > > access and update the same instance of an ado dataset and I'm unable
> > > to do it. I thought I could simply create a new instance of the
> > > dataset in a public module.  I can't;  I still lose all information
> > > storied in the datatable by a child routine as soon as that routine
> > > "returns" to the parent.
> >
> > > Ofcourse I could reference the dataset in every function and
> > > explicitly 'return' it at the end, but that seems unecessarily
> > > complex, particularly since many of the functions that are updating
> > > the dataset are already returning other information.  Can anyone tell
> > > me what the procedure is to define a common dataset instance?- Hide quoted text -
> >
> > - Show quoted text -
>
> Hi Marina,
>
> Thanks for replying.  There isn't much code to see.  This is vb.net so
> there are no explicit pointers.  Following is the basic code:
>
> Module VisualADPVariables
>      Public VADP_DataSetMain As New VisualADP_Dataset  'Creating a new
> instance of my Dataset
> End Module
>
>
> Public Class ConvertFiles
>      Public EPStoVectorPCL1 as new EPStoVectorPCL  'establishing an
> instance of another class
>
>      Public Sub ToVectorPCL(ByVal sender As System.Object, ByVal e As
> System.EventArgs)
>
>            'At this point a table called "STRINGDATA" in the
> VADP_Dataset is empty
>
>                theVPCLFileName =
> EPStoVectorPCL1.PROCESSEPSFORM(FormtoConvert, CurrentSourceDir,
> CurrentEditedFinDir, SizeArray(2), SizeArray(3),
>                CurrentFormScaleFactor_X, CurrentFormScaleFactor_Y)
>
>               ' the above function populated STRINGDATA with over 1000
> rows of data.  I have confirmed that this is happening
>
>     End Sub     '  A count of the rows in VADP_DatasetMain.STRINGDATA
> taken here is "0"
> End Class
>
>
>
>

> Hi,
>
> How are you filling the "STRINGDATA" table in your dataset?
>
> --
> Regards,
> Garik Melkonyan
> MCP, MCAD, MCSD .NET
>
>
>
> "bida***@yahoo.com" wrote:
> > On Feb 12, 2:00 pm, "Marina Levit [MVP]" <mari***@comcast.net> wrote:
> > > If you had a pointer to that dataset (or any object) in a module, it would
> > > not get lost when any function returned. It sounds like you weren't doing it
> > > right, perhaps posting relevant code would help.
>
> > > <bida***@yahoo.com> wrote in message
>
> > >news:1171309842.239635.296310@j27g2000cwj.googlegroups.com...
>
> > > > Hello all,
>
> > > > I am sure there is a simple answer to this question.  There just isn't
> > > > a simple way to describe it for a search engine.
>
> > > > I have a vb.net program consisting of several windows forms,
> > > > miscellanenous classes, and modules.  I want all of these classes to
> > > > access and update the same instance of an ado dataset and I'm unable
> > > > to do it. I thought I could simply create a new instance of the
> > > > dataset in a public module.  I can't;  I still lose all information
> > > > storied in the datatable by a child routine as soon as that routine
> > > > "returns" to the parent.
>
> > > > Ofcourse I could reference the dataset in every function and
> > > > explicitly 'return' it at the end, but that seems unecessarily
> > > > complex, particularly since many of the functions that are updating
> > > > the dataset are already returning other information.  Can anyone tell
> > > > me what the procedure is to define a common dataset instance?- Hide quoted text -
>
> > > - Show quoted text -
>
> > Hi Marina,
>
> > Thanks for replying.  There isn't much code to see.  This is vb.net so
> > there are no explicit pointers.  Following is the basic code:
>
> > Module VisualADPVariables
> >      Public VADP_DataSetMain As New VisualADP_Dataset  'Creating a new
> > instance of my Dataset
> > End Module
>
> > Public Class ConvertFiles
> >      Public EPStoVectorPCL1 as new EPStoVectorPCL  'establishing an
> > instance of another class
>
> >      Public Sub ToVectorPCL(ByVal sender As System.Object, ByVal e As
> > System.EventArgs)
>
> >            'At this point a table called "STRINGDATA" in the
> > VADP_Dataset is empty
>
> >                theVPCLFileName =
> > EPStoVectorPCL1.PROCESSEPSFORM(FormtoConvert, CurrentSourceDir,
> > CurrentEditedFinDir, SizeArray(2), SizeArray(3),
> >                CurrentFormScaleFactor_X, CurrentFormScaleFactor_Y)
>
> >               ' the above function populated STRINGDATA with over 1000
> > rows of data.  I have confirmed that this is happening
>
> >     End Sub     '  A count of the rows in VADP_DatasetMain.STRINGDATA
> > taken here is "0"
> > End Class- Hide quoted text -
>
> - Show quoted text -

"bida***@yahoo.com" wrote:

> Not "filling" in terms of populating the datatable from a database.  I
> am determing text data that needs to be used by the program in a later
> process and storing it row by row into the dataset until it is used.
> My program is doing this perfectly, but when the load routines are
> completed and the program returns to the parent routine, the data is
> not there.
>
>
>