aspnet自定义控件Treeview基本用法
用户控件添加了自定义事件和属性
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace AspNet.UserControl.Organization
{
public partial class OrganizationTree : System.Web.UI.UserControl
{
#region 属?性?
public OrganizationEntity CurrentOrganizationEntity
{
get
{
if (ViewState["CurrentOrganizationEntity"] != null)
{
//ViewState["CurrentOrganizationEntity"] = new T_BD_OrganizationEntity();
return (OrganizationEntity)ViewState["CurrentOrganizationEntity"];
}
else
{
//ViewState["CurrentOrganizationEntity"]
if (this.TVOrganization.Nodes.Count > 0)
{
OrganizationEntity entity=new OrganizationEntity();
entity.OrganizationID = new Guid(this.TVOrganization.Nodes[0].Value);
return entity;
}
}
return null;
}
set { ViewState["CurrentOrganizationEntity"] = value; }
}
public List<string> SelectedOrganization
{
get
{
if (ViewState["SelectedOrganization"] != null)
{
return (List<string>)ViewState["SelectedOrganization"];
}
if (ShowCheckbox)
{
List<string> list = new List<string>();
// string str = string.Empty;
foreach (TreeNode item in this.TVOrganization.CheckedNodes)
{
if (item.Checked)
{
list.Add(item.Value);
// str += item.Text+";";
}
}
// Label1.Text = str;
return list;
}
return new List<string>();
}
set { ViewState["SelectedOrganization"] = value; }
}
public bool ShowCheckbox
{
get
{
if (ViewState["ShowCheckbox"] != null)
{
return (bool)ViewState["ShowCheckbox"];
}
return false;
}
set
{
ViewState["ShowCheckbox"] = value;
}
}
#endregion 属?性?
#region 事?件t
public event EventHandler TreeSelectedNodeChangedEvent;//事?件t
#endregion 事?件t
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
InitTree();
}
}
#region 递Y归é绑ó定¨
private void InitTree()
{
TVOrganization.Nodes.Clear();
if (this.ShowCheckbox)
{
TVOrganization.ShowCheckBoxes = TreeNodeTypes.All;
}
else
{
TVOrganization.ShowCheckBoxes = TreeNodeTypes.None;
}
//DataTable dt = GetTreeViewTable();
OrganizationBLL OrganizationBLL = new OrganizationBLL();
OrganizationSearchEntity searchEntity = new OrganizationSearchEntity();
searchEntity .StateID = 0;
IList<OrganizationEntity> iList = OrganizationBLL.GetAllEntities(searchEntity );
IList<OrganizationEntity> itemList = iList.Where(p => （p).OrganizationTypeID == 0).ToList<OrganizationEntity>();
foreach (OrganizationEntity item in itemList)
{
TreeNode node = new TreeNode();
node.Text = item.OrganizationCName;
node.Value = item.OrganizationID.ToString();
TVOrganization.Nodes.Add(node);
AddTreeNode(iList, node);
}
}
private void AddTreeNode(IList<OrganizationEntity> list, TreeNode node)
{
IList<OrganizationEntity> itemList = list.Where(t => ((OrganizationEntity)t).FatherOrganizationID.ToString() == node.Value).ToList<OrganizationEntity>();
foreach (OrganizationEntity item in itemList)
{
TreeNode childNode = new TreeNode();
childNode.Text = item.OrganizationCName;
childNode.Value = item.OrganizationID.ToString();
//childNode.Expanded = false;
node.ChildNodes.Add(childNode);
AddTreeNode(list, childNode);
}
}
#endregion 递Y归é绑ó定¨
#region Treeview 事?件t
protected void TVOrganization_SelectedNodeChanged(object sender, EventArgs e)
{
OrganizationEntity entity = new OrganizationEntity();
entity.OrganizationID = new Guid(this.TVOrganization.SelectedNode.Value);
this.CurrentOrganizationEntity = entity;
if (TreeSelectedNodeChangedEvent != null)
{
TreeSelectedNodeChangedEvent(this, e);
}
}
#endregion Treeview 事?件t
#region setCheck/uncheck
public void SetCheck(List<string> listSource)
{
SetUnCheckAll();
//foreach (string itemStr in listSource)
//{
foreach (TreeNode item in TVOrganization.Nodes)
{
SetCheckSource(item, listSource);
// if(item.Value==itemStr)
//SetCheckbox(item, true);
}
//}
}
public void SetUnCheckAll()
{
foreach (TreeNode item in TVOrganization.Nodes)
{
SetCheckbox(item, false);
}
}
private void SetCheckbox(TreeNode node,bool check)
{
node.Checked = check;
foreach (TreeNode item in node.ChildNodes)
{
item.Checked = check;
if (item.ChildNodes.Count > 0)
{
SetCheckbox(item, check);
}
}
}
private void SetCheckSource(TreeNode node, List<string> listSource)
{
foreach (var itemStr in listSource)
{
if (node.Value == itemStr)
{
node.Checked = true;
break;
}
}
foreach (TreeNode item in node.ChildNodes)
{
foreach (var itemStr in listSource)
{
if (item.Value == itemStr)
{
item.Checked = true;
break;
}
}
if (item.ChildNodes.Count > 0)
{
SetCheckSource(item, listSource);
}
}
}
#endregion setCheck/uncheck
}
}