Undo a delete in a datagridview

18 Oct 2006 7:13 AM

Ausclad

Using a DatagridView in .net 2.0

How would you go about implementing an "undo" event?

So if the user selects a row in the datagridview, then hits the delete key,
I handle the deletion by using the "datagridviews.rows.removeat" function.

This removes the row from the datagridview, but the row should still be
available because I have not yet committed the change to the database.

Is there a simple property or method I can use to make the row visible again?

thanks

18 Oct 2006 7:48 AM

Ausclad

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"Ausclad" wrote:

> Using a DatagridView in .net 2.0
>
> How would you go about implementing an "undo" event?
>
> So if the user selects a row in the datagridview, then hits the delete key,
> I handle the deletion by using the "datagridviews.rows.removeat" function.
>
> This removes the row from the datagridview, but the row should still be
> available because I have not yet committed the change to the database.
>
> Is there a simple property or method I can use to make the row visible again?
>
> thanks

I don't know if this is the correct way to do it...but I managed to get what
I wanted by doing the following..

For the datasource (in my case a datatable), I called the "RejectChanges"
method and then with the bindingsource, i called "resetbindings"

this reset the status of the deleted row, then reset the datagridview so
that the value was now showing again.

18 Oct 2006 8:10 AM

Norman Chong

Ausclad schrieb:

>
> How would you go about implementing an "undo" event?
>

Hi Ausclad,

Don't know if it's what your looking for (Or if it's the best way...):
Store the complete row(s) you want to delete within a private
DataGridViewRowCollection before deleting them. When you click on your
'Undo' - Button or whatever, you can raise your event which should then
pump the deleted values into the grid.

Does that help?