Dataset State

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MarkusR - 14 Aug 2006 14:59 GMT

I want to prevent the user from closing the application if they are in
the middle of entering data. Is there a way to detect this?

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Bala - 14 Aug 2006 15:10 GMT

There are a couple of events you could try to catch.
The "FormClosing" event for starters..

> I want to prevent the user from closing the application if they are in
> the middle of entering data. Is there a way to detect this?

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MarkusR - 15 Aug 2006 18:41 GMT

Thanks Bala but I know where to check but I don't know what to check.

How do I detect the state of the table?

-Markus

> There are a couple of events you could try to catch.
> The "FormClosing" event for starters..
>
> > I want to prevent the user from closing the application if they are in
> > the middle of entering data. Is there a way to detect this?

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MarkusR - 21 Aug 2006 20:24 GMT

Is this a new concept?

Does no one validate whether the user wants to save/cancel changes when
the form is closing?

-MarkusR

> Thanks Bala but I know where to check but I don't know what to check.
>
[quoted text clipped - 7 lines]
> > > I want to prevent the user from closing the application if they are in
> > > the middle of entering data. Is there a way to detect this?

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Simon Tamman - 22 Aug 2006 01:00 GMT

Depends what your datasource is.
If it's a dataset you can call DataSet.GetChanges() to get any changes (e.g.
if there are no changes than the user hasn't modified any data).
This method obviously co-incides with the functionaliy of the
AcceptChanges() method of the dataset and row and table state (New,
Modified, Unchanged, Deleted etc).

HTH

Simon

> Is this a new concept?
>
[quoted text clipped - 14 lines]
> > > > I want to prevent the user from closing the application if they are in
> > > > the middle of entering data. Is there a way to detect this?

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MarkusR - 22 Aug 2006 18:58 GMT

Thanks Simon,

I am used to delphi where it is very event driven. BeforePost,
AfterPost, BeforeInsert....
Dataset.State = dsEdit..., tabpage.changing (so you can prevent it)...

Got spoiled.

C# is great though, so no need to start a delphi vs c# war. Just give
me a chance to adjust.

-Markus_R

> Depends what your datasource is.
> If it's a dataset you can call DataSet.GetChanges() to get any changes (e.g.
[quoted text clipped - 26 lines]
> in
> > > > > the middle of entering data. Is there a way to detect this?

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Simon Tamman - 22 Aug 2006 20:55 GMT

No worries, no need to start a Delphi-C# war, Eric Gunnarson worked on
creating both C# and Delphi so it's almost like we're family. :)

> Thanks Simon,
>
[quoted text clipped - 39 lines]
> > in
> > > > > > the middle of entering data. Is there a way to detect this?

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MarkusR - 31 Aug 2006 21:21 GMT

I miss my numbered bookmarks as in Delphi. :(

> No worries, no need to start a Delphi-C# war, Eric Gunnarson worked on
> creating both C# and Delphi so it's almost like we're family. :)
[quoted text clipped - 46 lines]
> > > in
> > > > > > > the middle of entering data. Is there a way to detect this?

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Dataset State

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