Hey
I need to check if row in my typed dataset is filled or not. I create a new
row, and data to this row will be sent from datagrid. Then user click save
button. But this button will be disabled if the row isn't properly filled.
But when accessing a filed that wasn't filled yet I have an error. So please
tell me how can I check if columns in row are filled or not.
Jarod

Hi,

You need explicitly check each required column to see if you have a value
there. Basically it is a loop. You could also catch RowChanging event of the
DataTable and check required values there. Everything depends on design of
your application

--
Val Mazur
Microsoft MVP

http://xport.mvps.org



"Jarod" <(E-Mail Removed)> wrote in message
news:A09BF979-A1CC-48BF-9259-(E-Mail Removed)...
> Hey
> I need to check if row in my typed dataset is filled or not. I create a
> new
> row, and data to this row will be sent from datagrid. Then user click save
> button. But this button will be disabled if the row isn't properly filled.
> But when accessing a filed that wasn't filled yet I have an error. So
> please
> tell me how can I check if columns in row are filled or not.
> Jarod

> You need explicitly check each required column to see if you have a value
> there. Basically it is a loop. You could also catch RowChanging event of the
> DataTable and check required values there. Everything depends on design of
> your application

So let's say I have typed dataset and I created a new typed row:

typedrow.myCustomUserColumn <- when I invoke this I get an error because
there is nothing in this column how to check if there is anything ?
Jarod

Jarod you should create row AFTER user fills form fields. You have to
validate form fields as well to exclude potential invalid values for given
fields. Then you create row and you set column values to relevant form
control values.

Peter

> So let's say I have typed dataset and I created a new typed row:
>
> typedrow.myCustomUserColumn <- when I invoke this I get an error because
> there is nothing in this column how to check if there is anything ?
> Jarod

> Jarod you should create row AFTER user fills form fields. You have to
> validate form fields as well to exclude potential invalid values for given
> fields. Then you create row and you set column values to relevant form
> control values.
>

I know, but there is a little problem user interface is divided into a few
pages ( it's ASP.Net application ) so user needs to fill up a few pages and
then row is saved. I keep row in a Session["newRow"] , maybe you have better
ideas ?
Jarod

Create some temporary structure which will hold values entered by user. When
user ends his work, you validate data and create the row.

HTH

Peter

"Jarod" <(E-Mail Removed)> wrote in message
news:A9F4C3E0-7251-42D2-8EED-(E-Mail Removed)...
>> Jarod you should create row AFTER user fills form fields. You have to
>> validate form fields as well to exclude potential invalid values for
>> given
>> fields. Then you create row and you set column values to relevant form
>> control values.
>>
>
> I know, but there is a little problem user interface is divided into a few
> pages ( it's ASP.Net application ) so user needs to fill up a few pages
> and
> then row is saved. I keep row in a Session["newRow"] , maybe you have
> better
> ideas ?
> Jarod

Explain "Filled".

- Sahil Malik [MVP]
Upcoming ADO.NET 2.0 book - http://tinyurl.com/9bync
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"Jarod" <(E-Mail Removed)> wrote in message
news:A09BF979-A1CC-48BF-9259-(E-Mail Removed)...
> Hey
> I need to check if row in my typed dataset is filled or not. I create a
new
> row, and data to this row will be sent from datagrid. Then user click save
> button. But this button will be disabled if the row isn't properly filled.
> But when accessing a filed that wasn't filled yet I have an error. So
please
> tell me how can I check if columns in row are filled or not.
> Jarod