Hi!

I have a very similar problem. I however, expect one or many rows to be selected on my postback. Since I haven't found any SelectedRows collection I unfortunately iterate through every single row in the Rows collection to check if they are Selected. This is probably not the best or preferred way to do it?

for (int i = 0; i < grd.Rows.Count; i++)
{
    if (grd.Rows[i].Selected)
    {
        // Here goes my stuff
    }
}

In the light of your above explanation I realise it won't work at all when the user have grouped by. So I thought I'd expand on my above code to do something like:

for (int i = 0; i < grd.GroupByRows.Count; i++)
{
    for (int j = 0; j < grd.GroupByRows[i].Rows.Count; j++)
    {
        if (grd.GroupByRows[i].Rows[j].Selected)
        {
            // Here goes my stuff
        }
    }
}

But since there was no GroupByRows collection I don't now what to do.

Any pointers to a better solution would be much appreciated.

regards,

!Rob

There is no "group-by rows" collection, because the rows in the grid's Rows collection are group-by rows.

What you're likely looking for is the grid's DisplayLayout.SelectedRows collection.

Knowing how to loop through all your rows when your grid is grouped may be helpful, however.  Since you can have any arbitrary level of grouping, this is best done by making a recursive method.  Here's an example based on what you've written; please note that I'm currently unable to test this example.

using Infragistics.WebUI.UltraWebGrid;
...
private void DoSomethingOnSelectedRows()
{
    // Pass the grid's Rows collection to the overload that takes a Rows collection
    DoSomethingOnSelectedRows(grd.Rows);
}

private void DoSomethingOnSelectedRows(RowsCollection rows)
{
    foreach (UltraGridRow row in rows)
    {
        // See if this is a group-by row
        GroupByRow groupRow = row as GroupByRow;

        if (groupRow == null)
        {
            // Not a group-by row

            // See if the row is selected
            if (row.Selected)
            {
                // Do something
            }
        }
        else
        {
            // This is a group-by row; loop through its Rows collection
            DoSomethingOnSelectedRows(groupRow.Rows);
        }
    }
}

Alternately, you could use an UltraGridRowEnumerator to enumerate through all rows in the grid, and simply ignore group-by rows.

Thank you very much for that!

This will add heaps of performance to my code. I cannot believe I hadn't found DisplayLayout.SelectedRows.

Although, it is probably not the most intuitive place for it to sit. Never mind though, I am very happy to have learned about it.

 Thanks again,

 !Rob