private void CreateDataTableNodes(DataTable dataSource, zTreeNode parentNode)
{
if (dataSource.Rows.Count == 0)
{
return;
}
var hasChild = !this.ParentIdField.IsEmpty();
DataRowCollection rows;
var parentId = parentNode == null ? this.RootId : parentNode.Id;
if (hasChild)
{
var dv = (dataSource as DataTable).DefaultView;
dv.RowFilter = this.ParentIdField + "='" + parentId + "'";
rows = dv.ToTable().Rows;
}
else
{
rows = dataSource.Rows;
}
var nodes = parentNode == null ? this.Nodes : parentNode.Nodes;
var args = new zTreeNodeDataBoundEventArgs();
foreach (DataRow row in rows)
{
var node = new zTreeNode(row[this.IdField].AsString(), row[this.NameField].AsString());
node.ParentNode = parentNode;
nodes.Add(node);
args.Node = node;
args.DataItem = row;
OnNodeDataBound(args);
CreateDataTableNodes(dataSource, node);
}
}
private void CreatezTreeNodes(IEnumerable dataSource, zTreeNode parentNode)
{
var query = dataSource.AsQueryable();
var dataType = query.ElementType;
var idPI = GetPropertyInfo(dataType, this.IdField);
var namePI = GetPropertyInfo(dataType, this.NameField);
var hasChild = !this.ParentIdField.IsEmpty();
var parentId = parentNode == null ? this.RootId : parentNode.Id;
if (hasChild)
{
query = query.Where(this.ParentIdField + "==@0", parentId);
}
var nodes = parentNode == null ? this.Nodes : parentNode.Nodes;
var args = new zTreeNodeDataBoundEventArgs();
foreach (var row in query)
{
if (parentNode != null && !parentNode.IsParent)
{
parentNode.IsParent = true;
}
var node = new zTreeNode(idPI.GetValue(row, null).AsString(), namePI.GetValue(row, null).AsString());
node.ParentNode = parentNode;
node.IsParent = this.ParentIdField.IsEmpty();
nodes.Add(node);
args.Node = node;
args.DataItem = row;
OnNodeDataBound(args);
if (hasChild)
{
CreatezTreeNodes(dataSource, node);
}
}
}
public zTreeNodeDataBoundEventArgs(object dataItem, zTreeNode node)
: base()
{
this.DataItem = dataItem;
this.Node = node;
}
