This article describes the implementation method of C# TreeView infinite directory tree. Share it for your reference, as follows:
#region binds to the customer treeprotected void bindTreeView()
{
();
string userid = Session["UserID"].ToString();
string sqlwr = new SY_ADMINUSER().GetUserIDListByLoginUser(userid, "CUSTOMERSERVICE", false);
DataTable dt = ("Select PARENTID,CUSTOMERID,CUSTOMERSHORT,CUSTOMERSERVICE from CU_CUSTOMER where ISDELETE='0' " + sqlwr + " order by CUSTOMERSHORT ").Tables[0];
//Define temporary tree node TreeNode tmpNd;
//Special treatment foreach (DataRow dr in )
{
DataRow[] drs = ("CUSTOMERID='" + dr["PARENTID"] + "'");
if ( == 0) //No superior node {
dr["PARENTID"] = "0";
}
}
();
//Get the array formed by DataRow with parent node null from DataTable DataRow[] rows = ("PARENTID='0'");
//Transfer the root node array foreach (DataRow row in rows)
{
tmpNd = new TreeNode();
// Assign value to the root node = row["CUSTOMERID"].ToString();
= row["CUSTOMERSHORT"].ToString();
= true;
//Add nodes into the tree (tmpNd);
AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString());
}
}
public void AddTree(DataTable dt, TreeView tv, TreeNode pNode, string CUSTOMERID)
{
DataRow[] rows = ("PARENTID='" + CUSTOMERID + "'");
TreeNode tmpNd;
foreach (DataRow row in rows)
{
tmpNd = new TreeNode();
// Assign value to the root node = row["CUSTOMERID"].ToString();
= row["CUSTOMERSHORT"].ToString();
= true;
(tmpNd);
//Add nodes into the tree //(pNode);
AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString());
}
}
#endregion
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