Finding the SelectedIndexes

[Kit]

Hello again.

I have a nested grid scenario, and on updating a record in the child grid, I need to ReBind() the parent grid.

e.Canceled = true;
grdProfileIntakes.Rebind();

However, doing this collapses the grid.  I need it to refresh and then expand the appropriate nodes to where it was.  Going through the documentation, I think I have two possible solutions.  First is using Grid.SelectedIndexes.Add(indexOfSelectedParentTableRow, indexOfParentTable), second is using Grid.MasterTableView.Items[indexOfSelectedItem].Expanded = true.

Both methods need the index of the selected item, specifically the index of the parent  of the selected child item.  How can I get this value?

TIA

kitster

[Princy]

Hello Kitster,

You can save the index of parent item after performing the operation on child item. Please take a look at the following sample code which illustrates the same.
C#:

int index=-1;

protected void RadGrid1_InsertCommand(object sender, GridCommandEventArgs e)
{
    . . . . . . .
    RadGrid1.Rebind();
    index = e.Item.OwnerTableView.ParentItem.ItemIndex; // saving index of parent item
}
protected void RadGrid1_PreRender(object sender, EventArgs e)
{
    if (index > -1)
    {
        RadGrid1.MasterTableView.Items[index].Expanded = true;
        index = -1;
    }
}

Thanks,
Princy.

[Kit]

Princy, you're a saviour, again.  For the record, I didn't need to user the PreRender event, all within the update command:

grdProfileIntakes.MasterTableView.ClearChildEditItems(); //Close the InPlace edit form
e.Canceled = true; //Need to cancel the operation so that the ReBind can work
grdProfileIntakes.Rebind(); //Requery the grid so parent row shows updates from child row
int parentIndex = e.Item.OwnerTableView.ParentItem.ItemIndex; //Index of parent item
grdProfileIntakes.MasterTableView.Items[parentIndex].Expanded = true; //Set the parent item to expanded

Now, one further question, naturally.  Am I doing this the right way?  The parent record has a calculated value, based on its child records.  Do I need to ReBind the entire grid to force the recalculation, or can I requery an individual record in the parent grid?

Thanks again Princy, I haven't got anywhere near enough hair to carry on tearing it out on things like this...

kitster

[Tsvetina]

Hi Kit,

This is correct, when you want to refresh a value in the master table based on values in the detail tables, you need to rebind the whole RadGrid control.

Best wishes,
Tsvetina
the Telerik team

[Kit]

Many thanks Tsvetina, good to know I'm on the right track

kitster