Instantiation class

[Peter Krikelis]

Hi,

I wrote a class in the same namespase as my whole project
and in few forms I am trying to use methods that are
implemented in that class. In one form it works perfectly
and when I am trying to call methods in other forms this
error is generated:

" An unhandled exception of
type 'System.NullRef erenceException ' occurred in
namespace.exe

Additional information: Object reference not set to an
instance of an object. "

public class myClass()
{
public myClass(){}

public void addRecord(strin g[] a,
System.Data.Ole Db.OleDbDataAda pter dAdapter,
System.Data.Dat aSet dataSet, string dtName)
{

--> System.Data.Dat aRow newRo = dataSet.Tables
[dtName].NewRow
...
}
}

Error is generated at the line specified by -->

Plese tell me what I am doing wrong
Thanks.

Pete

[Nicholas Paldino [.NET/C# MVP]]

Re: Instantiation class

Peter,

A number of things can be happening here. First, is the dataSet
variable set to anything? If so, the dtName table exist in the set? If
not, then that could be a place where it is failing.

Hope this helps.


--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m

"Peter Krikelis" <anonymous@disc ussions.microso ft.com> wrote in message
news:0d4401c3a5 4e$21380f20$a40 1280a@phx.gbl.. .[color=blue]
> Hi,
>
> I wrote a class in the same namespase as my whole project
> and in few forms I am trying to use methods that are
> implemented in that class. In one form it works perfectly
> and when I am trying to call methods in other forms this
> error is generated:
>
> " An unhandled exception of
> type 'System.NullRef erenceException ' occurred in
> namespace.exe
>
> Additional information: Object reference not set to an
> instance of an object. "
>
> public class myClass()
> {
> public myClass(){}
>
> public void addRecord(strin g[] a,
> System.Data.Ole Db.OleDbDataAda pter dAdapter,
> System.Data.Dat aSet dataSet, string dtName)
> {
>
> --> System.Data.Dat aRow newRo = dataSet.Tables
> [dtName].NewRow
> ...
> }
> }
>
> Error is generated at the line specified by -->
>
> Plese tell me what I am doing wrong
> Thanks.
>
> Pete
>[/color]