problem with GridView derived control selected items state maintainance set/reset

[VenkataRamana Gali]

hi, in my project we are using asp.net 2.0 GridView in so many places. Through out the project we are using GridView derived control.

public class GridView : System.Web.UI.WebControls.GridView
{
//logic
}

i have added code to maintain seleced checkboxes state, DataKey value ID of selected rows if user selects multiple rows from multiple pages navigation. i am storing the 1) ID, 2) Selected in the ViewState in the form of List. For this i have 2 methods

StoreCurrentViewState() //Here i am adding, removing the entries into the ViewState list
RestorePastViewState //Here i am resetting the checkedboxes.

this code i have used at...

protected override void OnPageIndexChanging(GridViewPageEventArgs e)
{
      StoreCurrentViewState();
      base.OnPageIndexChanging(e);
      RestorePastViewState();
}

also added at

protected override void OnDataBinding(EventArgs e)
{
      StoreCurrentViewState();
      base.OnDataBinding(e);
}

protected override void OnDataBound(EventArgs e)
{
      base.OnDataBound(e);
      RestorePastViewState();
}

it is maintaining selected checkboxes states during the gridview page naigation. my query is ... in one aspx page i have 4 grids and for all page it is storing in single ViewState object. i wanted to store these values in sepearate viewstate for each gridview && i need to reset the ViewState object if gridview loads first time. How can i do? please provide ur inputs...

Ramana

[r a m e s h]

Use ID or UniqueID of GridViews as the key when storing to ViewState. As each ID is going to be unique in a page, they will be maintained separately for each GriView in ViewState object.

[Zafar A khan]

store the viewstate as GridviewID$ID and then split it on restoring.