private void DragSourceManager_DroppedOutside(object sender, EventArgs e)
{
HierarchicalGroupByControlNode hierarchicalGroupByControlNode = HierarchicalGroupByItem.GetParentHierarchicalGroupByControlNode(this);
if (hierarchicalGroupByControlNode == null)
{
throw new DataGridInternalException();
}
bool allowGroupingModification = hierarchicalGroupByControlNode.IsGroupingModificationAllowed;
if (!allowGroupingModification)
{
return;
}
ObservableCollection <GroupDescription> groupDescriptions = this.ParentGroupDescriptions;
if (groupDescriptions != null)
{
// Get the HierarchicalGroupByControl before removing us from it
HierarchicalGroupByControl parentGBC = GroupingHelper.GetHierarchicalGroupByControl(this);
GroupLevelDescription groupLevelDescription = this.Content as GroupLevelDescription;
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl parentDataGridControl = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
GroupingHelper.RemoveGroupDescription(groupDescriptions, groupLevelDescription, parentDataGridControl);
// Notify groups have changed for NoGroupContent
parentGBC.UpdateHasGroups();
// Update the HasGroups property
Debug.Assert(parentGBC != null);
if (parentGBC == null)
{
throw new DataGridInternalException("The hierarchical group-by item must be rooted by a HierarchicalGroupByControl.");
}
}
}
void m_dragSourceManager_DroppedOutside(object sender, EventArgs e)
{
bool allowGroupingModification = true;
GroupByControl parentGBC = this.GetParentGroupByControl();
if (parentGBC != null)
{
allowGroupingModification = parentGBC.IsGroupingModificationAllowed;
}
if (allowGroupingModification)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
Debug.Assert(dataGridContext != null);
if (dataGridContext != null)
{
GroupingHelper.RemoveGroupDescription(
dataGridContext.Items.GroupDescriptions,
this.Content as GroupLevelDescription,
dataGridContext.DataGridControl);
}
}
}
