Question

I am listing a collection of date ranges (each date range is represented by a Period object) in a DevExpress XtraGrid (WinForms).

In a method which splits a Period in two (the split date is entered by the user), the code does this :

1. Obtains a Period reference on the focused row. ((Period)GridViewPeriods.GetRow(selectedRows[0]);)
2. Clones the selected period.
3. Obtains a reference on the newly cloned Period.

After the job is done, I want to put the focus on the newly cloned Period. At this point, I only have my two Period references.

I haven’t found any method in the XtraGrid that could locate a row based on it’s value (like returning a RowHandle by passing an object).

I ended up writing this helper method :

    public int GetDataRowIndex(RatePeriod period)
    {
        int foundIndex = 0;

        for (int i = 0; i < GridViewRatePeriods.DataRowCount; i++)
        {
            if ((RatePeriod)GridViewRatePeriods.GetRow(i) == period)
            {
                foundIndex = i;
                break;
            }
        }
        return foundIndex;
    }

Then I set the focus on the newly created Period like this :

GridViewPeriods.FocusedRowHandle = GetDataRowIndex(tailingPeriod);

Is there any shorter or smarter way to do that ?

Answer 1

It looks like you are doing it the best way though it seems like you are having to go through a bunch of stuff to get what you are looking for Dev Express has the same solution as you have

http://www.devexpress.com/Support/Center/p/A1488.aspx

I thought maybe the rowindex could be related back to the order of your datasource but there does not appear to any collation

http://www.devexpress.com/Support/Center/p/A1488.aspx

If you are displaying any kinda unique identifying infomation in a single cell you might be able to use LocateByValue if you were not displaying the unique identifying infomation you could always hide that column