private int fillTreeView(string searchBaseDn, string ldapFilter = null)
{
treeView1.BeginUpdate();
treeView1.Nodes.Clear();
// 搜尋 Base DN 本身，只驗證存在與否，不做過濾
Dictionary <string, List <AttributeDataModel> > result = ldapHelper.Search(searchBaseDn, searchScope: SearchScope.Base);
// 搜尋 Base DN 的所有後代，並做過濾。將所有搜尋結果納入樹狀結構。
int resultCount = result.Count; // 應只有一筆
foreach (var item in result)
{
TreeNode treeNodeRoot = treeView1.Nodes.Add(item.Key);
treeNodeRoot.Tag = item.Value; // 用Tag儲存該物件的Attributes.
resultCount += searchChildren(treeNodeRoot, ldapFilter);
}
treeView1.EndUpdate();
treeView1.ResumeLayout();
return(resultCount);
}