This is probably an easy question, but I can't find the answer
anywhere. I have two datatables in my Main_Dataset (untyped). One
table contains all of the information from the table in my database.
The other is supposed to contain only 5 columns of information.

The first table, the comprehensive one, fills fine and populates a
datagrid. The second one does not populate at all. I am attempting
to fill it will a second (dataadapter).fill command, using a small
datamap than in the first. So I have two tablemappings, each
configured the same except one only contains 5 columns.

This does not work, though it also doesn't error, so I have no idea
what is going on. Is this a valid way to fill a second table in a
dataset? If not, then how DO you populate multiple tables in a
dataset? Do you need a second data adapter? This seems wasteful;
making two calls to the database to retrieve the same information.


Thanks,
Mike Cooper

If the data is coming from the same database then you can use the same
dataadapter to fill a dataset, however, if you want to update the data in
both datatables and submit those changes then you should use two
dataadapters.

Filling two datatables:

Dim ds As New DataSet()
Dim dap As New xxxDataAdapter("SELECT SomeData From SomeTable",
connectionObj)

dap.Fill(ds, "FirstTable")

dap.SelectCommand.CommandText = "Select SomeData From SomeOtherTable"

dap.Fill(ds, "SecondTable")

Hope this helps
Brian Parlier


"Mike Cooper" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> This is probably an easy question, but I can't find the answer
> anywhere. I have two datatables in my Main_Dataset (untyped). One
> table contains all of the information from the table in my database.
> The other is supposed to contain only 5 columns of information.
>
> The first table, the comprehensive one, fills fine and populates a
> datagrid. The second one does not populate at all. I am attempting
> to fill it will a second (dataadapter).fill command, using a small
> datamap than in the first. So I have two tablemappings, each
> configured the same except one only contains 5 columns.
>
> This does not work, though it also doesn't error, so I have no idea
> what is going on. Is this a valid way to fill a second table in a
> dataset? If not, then how DO you populate multiple tables in a
> dataset? Do you need a second data adapter? This seems wasteful;
> making two calls to the database to retrieve the same information.
>
>
> Thanks,
> Mike Cooper