/// <summary>
/// Reloads data.
/// </summary>
public override void ReloadData()
{
if (!StopProcessing && (ProviderObject != null))
{
TreeView.Nodes.Clear();
TreeView.EnableViewState = false;
// Add custom root node
if (CustomRootNode != null)
{
if (!EnableRootAction)
{
CustomRootNode.SelectAction = TreeNodeSelectAction.None;
}
TreeView.Nodes.Add(CustomRootNode);
RaiseOnPopulateRootNode();
}
else
{
if (MultipleRoots)
{
// Load all roots
DataSet ds = ProviderObject.LoadData(ProviderObject.ParentIDColumn + " IS NULL");
if (!DataHelper.DataSourceIsEmpty(ds))
{
foreach (DataRow dr in ds.Tables[0].Rows)
{
// Add all results as roots
UniTreeNode rootNode = new UniTreeNode(ProviderObject, "");
rootNode.ItemData = dr;
TreeView.Nodes.Add(CreateNode(rootNode));
}
}
}
else
// Add root node from provider
if (ProviderObject.RootNode != null)
{
mRootNode = CreateNode((UniTreeNode)ProviderObject.RootNode);
RaiseOnNodeCreated((UniTreeNode)ProviderObject.RootNode, ref mRootNode);
mRootNode.Expanded = true;
TreeView.Nodes.Add(mRootNode);
}
}
}
}