Dynamic gridview values lost on postback

22 Aug 2006 10:56 AM

Bryan

Hi all,

I am developing an application that uses a GridView that has its
columns added dynamically.

The user selects from a Drop Down List of offices, this populates a
list of employees, the user selects one.

Clicking the "Add_Emp" button adds column relating to this employee to
a DataTable myDT, the DataTable is then bound to the GridView. All is
working fine here.

I also store the myDT in the session so that I can repopulate the
gridview on postback with the information for the DataTable

The problem -
When the user makes changes to the CheckBoxes in the Gridview, I
want to update the DataTable before it is used to repopulate the
GridView.

But, the GridView is empty on postback because it is dynamic.

Please give me suggestions on this.

Thanks,

Bryan

23 Aug 2006 12:15 PM

Vadivel Kumar

I guess, grid view shouldn't be empty if you have ViewState enabled for
that control. Even in postback condition you can track the CheckBox state.

Check for the ViewState and AutoPostBack properties.

--
Vadivel Kumar
http://www.vadivelk.net
v***@online.vadivelk.net (remove "online.")

Bryan wrote:

Show quoteHide quote

> Hi all,
>
> I am developing an application that uses a GridView that has its
> columns added dynamically.
>
> The user selects from a Drop Down List of offices, this populates a
> list of employees, the user selects one.
>
> Clicking the "Add_Emp" button adds column relating to this employee to
> a DataTable myDT, the DataTable is then bound to the GridView. All is
> working fine here.
>
> I also store the myDT in the session so that I can repopulate the
> gridview on postback with the information for the DataTable
>
>
> The problem -
>    When the user makes changes to the CheckBoxes in the Gridview, I
> want to update the DataTable before it is used to repopulate the
> GridView.
>
>   But, the GridView is empty on postback because it is dynamic.
>
>   Please give me suggestions on this.
>
> Thanks,
>
> Bryan
>