«

Hi,
On my page I have dataset values displayed in text box and datagrid. After I
make any change on the text boxes which do not immediately effect the value
in the dataset. How can I know if the dataset is dirty. I mean how can I
capture if any change was done to the values in the controls on the page to
prevent the user from escaping without saving changes

Regards

You need to capture changed value events, then modify and save the dataset
before rebinding the controls. Load your old dataset in Page_Load. When the
TextChanged event fires for your textbox you can either update the dataset
then or set a flag to do it later. For the datagrid you either handle
EditItem update events or scavenge the entire datagrid for changed values.
Then in Page_PreRender you call code to save the changed dataset just before
binding the controls to their values.

You probably want to make sure the save succeeds before binding the data;
I normally just reload dataset right after saving it to make sure, but you
can do that conditionally if performance matters. BTW I recently read an
article by Scott Mitchell entitled "Why I Don't Use DataSets in My ASP.NET
Applications" -- you might want to take a look at it:
http://aspnet.4guysfromrolla.com/articles/050405-1.aspx

"EDom" wrote:

> Hi,
> On my page I have dataset values displayed in text box and datagrid. After I
> make any change on the text boxes which do not immediately effect the value
> in the dataset. How can I know if the dataset is dirty. I mean how can I
> capture if any change was done to the values in the controls on the page to
> prevent the user from escaping without saving changes
>
> Regards
>
>
>