TreeView控件

时间:2022-01-06 12:16:50
public partial class WebForm1 : System.Web.UI.Page
{
DataSet dsTreeView = new DataSet(); protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GetTreeView();
InitTree("", null);
TreeView1.ExpandDepth = ;//展开目录
TreeView1.Nodes[].Expanded = true;//默认只展开第2层目录
}
} private void InitTree(string parent_code, TreeNode parent_node)
{
DataView dv = dsTreeView.Tables[].DefaultView;
dv.RowFilter = "[parent_code] = '" + parent_code + "'"; foreach (DataRowView Row in dv)
{
TreeNode node = new TreeNode();
node.SelectAction = TreeNodeSelectAction.Expand;
if (parent_node == null)//根节点
{
node.Text = Row["area_name"].ToString();
node.Value = Row["area_code"].ToString();
this.TreeView1.Nodes.Add(node);
InitTree(Row["area_code"].ToString(), node);//递归
}
else
{
node.Text = "<div onclick=\"javascript:SetView('" + Row["area_name"].ToString() + "')\">" + Row["area_name"].ToString() + "</div>";//绑定前台JS事件
node.Value = Row["area_code"].ToString();
parent_node.ChildNodes.Add(node);
InitTree(Row["area_code"].ToString(), node);//递归
}
}
} /// <summary>
/// 数据源
/// </summary>
private void GetTreeView()
{
SqlConnection sqlConn = new SqlConnection("server=.;database=test;uid=test;pwd=test");
SqlDataAdapter adp = new SqlDataAdapter("select area_code,area_name,parent_code from tbl_all_AreaList where area_code<>parent_code", sqlConn);
adp.Fill(dsTreeView);
} }