internal static bool SetValue(object data, string propertyName, object value)
{
if (DynamicHelper.CheckIsDynamicObject(data.GetType()))
{
return(new DynamicHelper().SetValue(data, propertyName, value));
//return DynamicPropertiesProvider.SetDynamicValue(data, propertyName, value);
}
else
{
#if WPF
PropertyDescriptorCollection descriptor = TypeDescriptor.GetProperties(data.GetType());
#else
PropertyInfoCollection descriptor = new PropertyInfoCollection(data.GetType());
#endif
return(descriptor.SetValue(data, value, propertyName));
}
}
public static bool GetIsDynamicBound(this IEnumerable collection)
{
var enumerator = collection.GetEnumerator();
if (!enumerator.MoveNext())
{
return(false);
}
var record = enumerator.Current;
if (record != null)
{
var isDynamicBound = DynamicHelper.CheckIsDynamicObject(record.GetType());
return(isDynamicBound);
}
return(false);
}
/// <summary>
/// Process drop operations in nested view.
/// </summary>
/// <param name="rowColumnIndex">dropped row column index.</param>
/// <param name="dropPosition">drop position.</param>
/// <param name="nodes">the dragging nodes which needs to be dropped.</param>
/// <param name="sourceTreeGrid">the grid from which drag operation in initiated.</param>
protected virtual void ProcessDropOnNestedView(RowColumnIndex rowColumnIndex, DropPosition dropPosition, ObservableCollection <TreeNode> nodes, SfTreeGrid sourceTreeGrid)
{
var isSameGrid = (TreeGrid == sourceTreeGrid);
var treeNode = this.TreeGrid.GetNodeAtRowIndex(rowColumnIndex.RowIndex);
if (treeNode == null)
{
return;
}
var data = treeNode.Item;
TreeGrid.View.Suspend();
TreeGrid.SelectionController.SuspendUpdates();
ProcessDragSourceOnDrop(sourceTreeGrid, nodes);
var itemIndex = -1;
var nodeIndex = -1;
TreeNode parentNode = null;
if (dropPosition == DropPosition.DropBelow || dropPosition == DropPosition.DropAbove)
{
parentNode = treeNode.ParentNode;
}
else if (dropPosition == DropPosition.DropAsChild)
{
if (!treeNode.IsExpanded)
{
TreeGrid.ExpandNode(treeNode);
}
parentNode = treeNode;
}
IList sourceCollection = null;
if (dropPosition == DropPosition.DropBelow || dropPosition == DropPosition.DropAbove)
{
if (treeNode.ParentNode != null)
{
var collection = TreeGrid.View.propertyAccessProvider.GetValue(treeNode.ParentNode.Item, TreeGrid.ChildPropertyName) as IEnumerable;
sourceCollection = TreeGridHelper.GetSourceListCollection(collection);
}
else
{
sourceCollection = TreeGridHelper.GetSourceListCollection(TreeGrid.View.SourceCollection);
}
itemIndex = sourceCollection.IndexOf(data);
if (parentNode != null)
{
nodeIndex = parentNode.ChildNodes.IndexOf(treeNode);
}
else
{
nodeIndex = this.TreeGrid.View.Nodes.RootNodes.IndexOf(treeNode);
}
if (dropPosition == DropPosition.DropBelow)
{
itemIndex += 1;
nodeIndex += 1;
}
}
else if (dropPosition == DropPosition.DropAsChild)
{
var item = treeNode.Item;
var collection = TreeGrid.View.propertyAccessProvider.GetValue(item, TreeGrid.ChildPropertyName) as IEnumerable;
sourceCollection = TreeGridHelper.GetSourceListCollection(collection);
if (sourceCollection == null)
{
// Create sourcecollection by getting item type.
if (!DynamicHelper.CheckIsDynamicObject(item.GetType()))
{
var list = item.GetType().GetProperty(TreeGrid.ChildPropertyName).PropertyType.CreateNew() as IList;
if (list != null)
{
TreeGrid.View.propertyAccessProvider.SetValue(treeNode.Item, TreeGrid.ChildPropertyName, list);
sourceCollection = list;
}
}
else
{
// If item is dynamic collection, customer needs to override and add record.
this.TreeGrid.View.Resume();
TreeGrid.SelectionController.ResumeUpdates();
(TreeGrid.SelectionController as TreeGridRowSelectionController).RefreshSelection();
return;
}
}
itemIndex = sourceCollection.Count;
nodeIndex = parentNode.ChildNodes.Count;
}
foreach (var node in nodes)
{
sourceCollection.Insert(itemIndex, node.Item);
this.TreeGrid.View.AddNode(parentNode, node, nodeIndex, itemIndex, false);
}
UpdateParentNodeExpanderCell(parentNode);
this.TreeGrid.View.Resume();
TreeGrid.SelectionController.ResumeUpdates();
(TreeGrid.SelectionController as TreeGridRowSelectionController).RefreshSelection();
}