private void ListView_GroupExpanding(object sender, GroupExpandCollapseChangingEventArgs e)
{
if (e.Groups.Count > 0)
{
var group = e.Groups[0];
if (expandedGroup == null || group.Key != expandedGroup.Key)
{
foreach (var otherGroup in listView.DataSource.Groups)
{
if (group.Key != otherGroup.Key)
{
listView.CollapseGroup(otherGroup);
}
}
expandedGroup = group;
listView.ExpandGroup(expandedGroup);
}
}
}
private void ListView_GroupExpanding(object sender, GroupExpandCollapseChangingEventArgs e)
{
if (e.Groups.Count > 0)
{
var group = e.Groups[0];
if (expandedGroup == null || group.Key != expandedGroup.Key)
{
foreach (var otherGroup in listView.DataSource.Groups)
{
if (group.Key != otherGroup.Key)
{
listView.CollapseGroup(otherGroup);
}
}
expandedGroup = group;
listView.ExpandGroup(expandedGroup);
int index = listView.DataSource.DisplayItems.IndexOf(expandedGroup);
listView.LayoutManager.ScrollToRowIndex(index, Syncfusion.ListView.XForms.ScrollToPosition.Center, true);
}
}
}
private void ListView_GroupCollapsing(object sender, GroupExpandCollapseChangingEventArgs e)
{
// if (e.Groups[0] == listView.DataSource.Groups[0])
// e.Cancel = true;
}
