datatable.HasChanges() ?

[mrstrong]

Gday,

Have been going through the walkthrough for a distributed application:
http://msdn2.microsoft.com/en-us/library/1as0t7ff.aspx

and it appears to suggest in the SaveData_Click method that you can check a
datatable for changes, ie

if (CustomerData.H asChanges())

However when I try to build this I get the error:

Error 1 '<blah>DataTabl e' does not contain a definition for 'HasChanges'

Am I doing something stupid or do datatables not have this method available?

Thanks,

Peter

[Jon Skeet [C# MVP]]

Re: datatable.HasCh anges() ?

mrstrong <mrstrong@hotma il.com> wrote:[color=blue]
> Have been going through the walkthrough for a distributed application:
> http://msdn2.microsoft.com/en-us/library/1as0t7ff.aspx
>
> and it appears to suggest in the SaveData_Click method that you can check a
> datatable for changes, ie
>
> if (CustomerData.H asChanges())
>
> However when I try to build this I get the error:
>
> Error 1 '<blah>DataTabl e' does not contain a definition for 'HasChanges'
>
> Am I doing something stupid or do datatables not have this method available?[/color]

There is no DataTable.HasCh anges() method - there is only
DataSet.HasChan ges().

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[mrstrong]

Re: datatable.HasCh anges() ?

"Jon Skeet [C# MVP]" <skeet@pobox.co m> wrote in message
news:MPG.1e133c fa3ef7f3a998cb6 f@msnews.micros oft.com...[color=blue]
> mrstrong <mrstrong@hotma il.com> wrote:[color=green]
>>
>> and it appears to suggest in the SaveData_Click method that you can check
>> a
>> datatable for changes, ie
>>
>> if (CustomerData.H asChanges())
>>
>> However when I try to build this I get the error:
>>
>> Error 1 '<blah>DataTabl e' does not contain a definition for 'HasChanges'
>>
>> Am I doing something stupid or do datatables not have this method
>> available?[/color]
>
> There is no DataTable.HasCh anges() method - there is only
> DataSet.HasChan ges().
>[/color]

Thanks. So the 'save' method on the walkthrough was not right?

http://msdn2.microsoft.com/en-us/library/1as0t7ff.aspx

Regards,

Peter

[Jon Skeet [C# MVP]]

Re: datatable.HasCh anges() ?

mrstrong <mrstrong@hotma il.com> wrote:[color=blue][color=green]
> > There is no DataTable.HasCh anges() method - there is only
> > DataSet.HasChan ges().[/color]
>
> Thanks. So the 'save' method on the walkthrough was not right?
>
> http://msdn2.microsoft.com/en-us/library/1as0t7ff.aspx[/color]

Looks like it, yes.

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[theiwaz]

Re: datatable.HasCh anges() ?

Correct the DataTable class just defines DataTable.GetCh anges() Method.

[mrstrong]

Re: datatable.HasCh anges() ?

"theiwaz" <marcus.peters@ ascirum.de> wrote in message
news:1135167049 .027275.306350@ g49g2000cwa.goo glegroups.com.. .[color=blue]
> Correct the DataTable class just defines DataTable.GetCh anges() Method.
>[/color]

Hmmm.. Not in front of my work machine at present so cant try this out, but
can a datatable be NULL?

So could the following be used to test for changes to a datatable:

if (DataTable.GetC hanges() != NULL)

?

(not sure about the exact syntax)

Peter