Composite Control Question: Re-creating DataGrid child control upon Postback?

[debartsa]

Hi Everybody,

I have a composite control (in C#) which creates a DataGrid child control
that binds to a DataSource (DataSet resultant from a sql query) passed in by
the consuming .aspx. The .aspx page does the typical... if (!Postback)
{ //define datasource and bind } My question is how does my composite
control recreate the DataGrid from ViewState upon postback? i.e. When
postback occurs I can't use the DataSource passed in from the .aspx page?

I've read msdn articles that explain creating a dummy datasource to be used
upon postback? But how do I populated the dummy datasource with the same
values I originally got from my initial sql query?

Thanks for any help!
Sam

 

[John Saunders]

Hi Everybody,

I have a composite control (in C#) which creates a DataGrid child control
that binds to a DataSource (DataSet resultant from a sql query) passed in by
the consuming .aspx. The .aspx page does the typical... if (!Postback)
{ //define datasource and bind } My question is how does my composite
control recreate the DataGrid from ViewState upon postback? i.e. When
postback occurs I can't use the DataSource passed in from the .aspx page?

I've read msdn articles that explain creating a dummy datasource to be used
upon postback? But how do I populated the dummy datasource with the same
values I originally got from my initial sql query?

On postback, just create the datagrid and add it to your Controls
collection. It will restore from ViewState, same as it saved there.