My grid is bound to a List of my custom objects. On BeforeRowExpanded event I asynchronously fetch the child rows of the given row. While this async operation is happening I add an animated gif to the row selector of the given row to show that it is loading. When the async operation comes back I add the child collection to the appropriate listobject and reset the row selector image. This works about 50% of the time. the other 50% of the time the grid freezes and causes my app to die. Here is my code:

When I put a break point on the ImageAnimator.Stop line the app never freezes. This makes me wonder if it is a timing issue. I realize this is out of the box functionality but if anybody has an idea what could be happening I appreciate it.

public void SetRowLoading(UltraGridRow row, bool loading)
{
if (loading)
{
row.RowSelectorAppearance.Image = Properties.Resources.loading_small;
ImageAnimator.Animate((Image)row.RowSelectorAppearance.Image, new EventHandler(image_onFrameChange));
}
else
{
if (row != null && row.RowSelectorAppearance.Image != null)
{
ImageAnimator.StopAnimate((Image)row.RowSelectorAppearance.Image, new EventHandler(image_onFrameChange));
row.RowSelectorAppearance.ResetImage();
}
}
}


private void image_onFrameChange(object sender, EventArgs e)
{
if (_gridBlotter.InvokeRequired)
{
_gridBlotter.Invoke(new EventHandler(image_onFrameChange), new object[ { sender, e });
}
else
{
_gridBlotter.Invalidate(true);
ImageAnimator.UpdateFrames((Image)sender);
}
}

Thanks.

Drew