UltraWebTree的递归绑定和节点拖动
1.html代码
<HTML>
<HEAD>
<title>TreeView</title>
<meta content=”Microsoft Visual Studio .NET 7.1″ name=”GENERATOR”>
<meta content=”C#” name=”CODE_LANGUAGE”>
<meta content=”JavaScript” name=”vs_defaultClientScript”>
<meta content=”http://schemas.microsoft.com/intellisense/ie5″ name=”vs_targetSchema”>
<SCRIPT type=”text/javascript”>
function UltraWebTree1_DragStart(oTree, oNode, oDataTransfer, oEvent)
{
//debugger;
oDataTransfer.dataTransfer.setData(“Text“, oNode.getText());
oDataTransfer.dataTransfer.effectAllowed = “move“;
}
function UltraWebTree1_Drop(oTree, oNode, oDataTransfer, oEvent)
{
//debugger;
if(oNode.getParent()!=null)
{
alert(“Please make sure that the form is moved to a case and try again.“);
return false;
}
var sourceNode = oDataTransfer.sourceObject;
if(sourceNode.getParent()==null)
{
alert(“Please make sure that the form is moved to a case and try again.“);
return false;
}
oNode.addChild(oDataTransfer.dataTransfer.getData(“Text“));
oNode.setExpanded(true);
if(sourceNode)
{
sourceNode.remove();
}
return false;
}
</SCRIPT>
</HEAD>
<body>
<form id=”Form1″ method=”post” runat=”server”>
<TABLE id=”Table1″ height=”100%” cellSpacing=”0″ cellPadding=”0″ width=”100%” border=”0″>
<TR vAlign=”top” height=”100%”>
<TD colSpan=”2″><ignav:ultrawebtree id=”UltraWebTree1″ runat=”server” AllowDrop=”True” AllowDrag=”True” BorderStyle=”Groove”
BackColor=”#E0E0E0″ BrowserTarget=”Auto” Cursor=”hand” WebTreeTarget=”HierarchicalTree” AutoPostBack=”False”
Editable=”False” Height=”100%” Width=”100%” BorderWidth=”3px”>
<SelectedNodeStyle ForeColor=”White” BackColor=”DarkBlue”></SelectedNodeStyle>
<Padding Top=”5px”></Padding>
<Levels>
<ignav:Level Index=”0″></ignav:Level>
<ignav:Level Index=”1″></ignav:Level>
<ignav:Level Index=”2″></ignav:Level>
</Levels>
<Styles>
<ignav:Style CssClass=”DefaultItemClass”></ignav:Style>
<ignav:Style Cursor=”Hand” Font-Underline=”True” Font-Names=”Arial” ForeColor=”#FF8000″ BackColor=”PaleGoldenrod”
CssClass=”HoverClass”></ignav:Style>
<ignav:Style ForeColor=”White” BackColor=”Tan” CssClass=”HiliteClass”></ignav:Style>
</Styles>
<ClientSideEvents AfterNodeSelectionChange=”AfterNodeSelChange” DragStart=”UltraWebTree1_DragStart”
Drop=”UltraWebTree1_Drop”></ClientSideEvents>
</ignav:ultrawebtree></TD>
</TR>
</TABLE>
</form>
</body>
</HTML>
//using Infragistics.WebUI.UltraWebNavigator;
public class TreeView : System.Web.UI.Page
{
protected Infragistics.WebUI.UltraWebNavigator.UltraWebTree UltraWebTree1;
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
UltraWebTree1.Nodes.Clear();
BindTree(UltraWebTree1.Nodes,ds.Tables[0],“0“);
}
}
private void BindTree(Infragistics.WebUI.UltraWebNavigator.Nodes Nds,DataTable dt,string id)
{
DataView dv = new DataView(dt);
dv.RowFilter = “parentid = \’“+id.ToString()+“\’“;
Node node;
foreach(DataRowView drv in dv)
{
node=new Node();
node.Tag=drv[“id“].ToString();
node.Text=drv[“name“].ToString();
node.Expanded=true;
Nds.Add(node);
BindTree(node.Nodes,dt,drv[“id“].ToString());
}
}
Web Form Designer generated code#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// Required method for Designer support – do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
GetData#region GetData
private DataTable GetData()
{
DataTable dt;
dt = new DataTable();
dt.Columns.Add(“id“);
dt.Columns.Add(“parentid“);
dt.Columns.Add(“name“);
DataRow dr;
dr = dt.NewRow();
dr[“id“] = “1“;
dr[“parentid“] = “0“;
dr[“name“] = “a“;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“id“] = “2“;
dr[“parentid“] = “1“;
dr[“name“] = “b“;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“id“] = “3“;
dr[“parentid“] = “1“;
dr[“name“] = “c“;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“id“] = “4“;
dr[“parentid“] = “2“;
dr[“name“] = “d“;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“id“] = “5“;
dr[“parentid“] = “2“;
dr[“name“] = “e“;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“id“] = “6“;
dr[“parentid“] = “3“;
dr[“name“] = “f“;
dt.Rows.Add(dr);
return dt;
}
}
2.cs代码
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