OK. Cancel this. I'm going to answer my own question (I hope)
After passing the datatable to the form, I copied it, so that all
manipulation is with the copy. If the user hits OK, the duplicate table is
copied back the original.
(Of course, I'm assuming a relatively small table, hopefully no more than a
few hundred records. Seems to work, so far....)
[quoted text, click to view] "B. Chernick" wrote:
> I'm passing a data table to a form. This table is then bound to a binding
> source which is in turn bound to a datagridview so that only a subset of the
> table is ever displayed (filters by key). This form is your basic dialog
> with OK/Cancel buttons.
>
> For reasons too complicated to explain, what I need to do is be able to pass
> this same data table multiple times to this same form, make multiple
> adds/mods to the table (for a given key) and then either accept or reject
> each batch of adds/mods. All of this is to take place without updates to the
> database. The update is supposed to happen only once much later on.
>
> When I simply try to loop through the datatable and removing unwanted new
> rows, I get RowNotInTableException errors (This row has been removed from a
> table and does not have any data. etc...)
>
> What would be a good approach to this problem? Anything I'm missing? (This
B.
This is normal behaviour, delete (not remove that does not update the
database) them upwards.
Cor
"B. Chernick" <BChernick@discussions.microsoft.com> schreef in bericht
news:4607FAAC-7B33-4356-BFA0-48DB51E48F56@microsoft.com...
[quoted text, click to view] > I'm passing a data table to a form. This table is then bound to a binding
> source which is in turn bound to a datagridview so that only a subset of
> the
> table is ever displayed (filters by key). This form is your basic dialog
> with OK/Cancel buttons.
>
> For reasons too complicated to explain, what I need to do is be able to
> pass
> this same data table multiple times to this same form, make multiple
> adds/mods to the table (for a given key) and then either accept or reject
> each batch of adds/mods. All of this is to take place without updates to
> the
> database. The update is supposed to happen only once much later on.
>
> When I simply try to loop through the datatable and removing unwanted new
> rows, I get RowNotInTableException errors (This row has been removed from
> a
> table and does not have any data. etc...)
>
> What would be a good approach to this problem? Anything I'm missing?
> (This
> feels like deja vu.)
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