Asp.net TreeView来构建用户选择输入的方法 推荐

<div class="search">
<span>
<asp:ImageButton ID="btnSelect" runat="server"
ImageUrl="~/Themes/Default/btn_select.gif" onclick="btnSelect_Click"
/>
<asp:ImageButton ID="btnClose" runat="server" OnClientClick="javascript:window.close();return false;"
ImageUrl="~/Themes/Default/btn_close.gif" />
</span>
<table cellspacing="0" cellpadding="0" border="0" width="100%">
<tr>
<td class="ico">
&nbsp;
</td>
<td class="form">
<asp:TreeView ID="TreeView1" runat="server" onclick="OnTreeNodeChecked();" ShowCheckBoxes="All"
ShowLines="True" ExpandDepth="1" Font-Bold="False" ForeColor="#0000CC">
</asp:TreeView>
</td>
</tr>
</table>
</div>
<script language='javascript' type='text/javascript'>
function OnTreeNodeChecked() {
var ele = event.srcElement;
if (ele.type == 'checkbox') {
var childrenDivID = ele.id.replace('CheckBox', 'Nodes');
var div = document.getElementById(childrenDivID);
if (div == null) return;
var checkBoxs = div.getElementsByTagName('INPUT');
for (var i = 0; i < checkBoxs.length; i++) {
if (checkBoxs[i].type == 'checkbox')
checkBoxs[i].checked = ele.checked;
}
}
}
function SubmitValue() {
var val = "";
var returnVal = new Array();
var inputs = document.all.tags("INPUT");
var n = 0;
for (var i = 0; i < inputs.length; i++) // 遍历页面上所有的 input
{
if (inputs[i].type == "checkbox") {
if (inputs[i].checked) {
var strValue = inputs[i].value;
val += strValue + ',';
//returnVal[n] = val;
n = n + 1;
}
} //if(inputs[i].type="checkbox")
} //for
window.returnValue = val;
window.close();
}
</script>

protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
BindData();
}
}
private void BindData()
{
ArrayList scopeTree = BLLFactory<BusinessScope>.Instance.GetTree();
foreach (BusinessScopeNodeInfo nodeInfo in scopeTree)
{
TreeNode node = new TreeNode(nodeInfo.Name);
node.SelectAction = TreeNodeSelectAction.Expand;
this.TreeView1.Nodes.Add(node);
AddTreeNode(node, nodeInfo);
}
}
private void AddTreeNode(TreeNode parentNode, BusinessScopeNodeInfo nodeInfo)
{
TreeNode treeNode = null;
foreach (BusinessScopeNodeInfo subNodeInfo in nodeInfo.Children)
{
treeNode = new TreeNode(subNodeInfo.Name);
treeNode.SelectAction = TreeNodeSelectAction.Expand;
parentNode.ChildNodes.Add(treeNode);
AddTreeNode(treeNode, subNodeInfo);
}
}
protected void btnSelect_Click(object sender, ImageClickEventArgs e)
{
string result = "";
foreach (TreeNode parent in this.TreeView1.Nodes)
{
foreach (TreeNode node in parent.ChildNodes)
{
StringBuilder sb = new StringBuilder();
foreach (TreeNode subNode in node.ChildNodes)
{
if (subNode.Checked)
{
sb.AppendFormat("{0},", subNode.Text);
}
}
if (sb.Length > 0)
{
sb.Insert(0, string.Format("{0}(", node.Text));
sb.Append(")");
result += sb.ToString().Replace(",)", ")") + ";";
}
else if (node.Checked)
{
result += node.Text;
}
}
}
Helper.CloseWin(this, result.Trim(';'));
}

/// <summary>
/// 获取数据树
/// </summary>
/// <returns></returns>
public ArrayList GetTree()
{
ArrayList arrReturn = new ArrayList();
string sql = string.Format("Select * From {0} Order By PID, Seq ", tableName);
Database db = DatabaseFactory.CreateDatabase();
DbCommand cmdWrapper = db.GetSqlStringCommand(sql);
DataSet ds = db.ExecuteDataSet(cmdWrapper);
if (ds.Tables.Count > 0)
{
DataTable dt = ds.Tables[0];
DataRow[] dataRows = dt.Select(string.Format(" PID = {0}", -1));
for (int i = 0; i < dataRows.Length; i++)
{
int id = Convert.ToInt32(dataRows[i]["ID"]);
BusinessScopeNodeInfo menuNodeInfo = GetNode(id, dt);
arrReturn.Add(menuNodeInfo);
}
}
return arrReturn;
}
private BusinessScopeNodeInfo GetNode(int id, DataTable dt)
{
BusinessScopeInfo menuInfo = this.FindByID(id);
BusinessScopeNodeInfo menuNodeInfo = new BusinessScopeNodeInfo(menuInfo);
DataRow[] dChildRows = dt.Select(string.Format(" PID={0}", id));
for (int i = 0; i < dChildRows.Length; i++)
{
int childId = Convert.ToInt32(dChildRows[i]["ID"]);
BusinessScopeNodeInfo childNodeInfo = GetNode(childId, dt);
menuNodeInfo.Children.Add(childNodeInfo);
}
return menuNodeInfo;
}

/// <summary>
/// BusinessScopeNodeInfo 的摘要说明。
/// </summary>
public class BusinessScopeNodeInfo : BusinessScopeInfo
{
private ArrayList m_Children = new ArrayList();
/// <summary>
/// 子菜单实体类对象集合
/// </summary>
public ArrayList Children
{
get { return m_Children; }
set { m_Children = value; }
}
public BusinessScopeNodeInfo()
{
this.m_Children = new ArrayList();
}
public BusinessScopeNodeInfo(BusinessScopeInfo scopeInfo)
{
base.Id = scopeInfo.Id;
base.Name = scopeInfo.Name;
base.Seq = scopeInfo.Seq;
}
}

[Serializable]
public class BusinessScopeInfo : BaseEntity
{
#region Field Members
private decimal m_Id = 0;
private decimal m_Pid = -1;
private string m_Name = "";
private string m_Seq = "";
#endregion
#region Property Members
public virtual decimal Id
{
get
{
return this.m_Id;
}
set
{
this.m_Id = value;
}
}
public virtual decimal Pid
{
get
{
return this.m_Pid;
}
set
{
this.m_Pid = value;
}
}
public virtual string Name
{
get
{
return this.m_Name;
}
set
{
this.m_Name = value;
}
}
public virtual string Seq
{
get
{
return this.m_Seq;
}
set
{
this.m_Seq = value;
}
}
#endregion
}