working on treeview

[thirdy33]

how can i edit,remove and add a node on a treeview in the runtime?

[mrcooll]

the following code snippet generate classes nodes has a childe nodes "Semester"

private void FillTreeNodes()
{
SysClass sysclass = new SysClass();
DataSet ds= sysclass.GetAllSysClasss();

    TreeNode node;
    
    foreach (DataRow row in ds.Tables\[0\].Rows)
    {
        node = new TreeNode();
        node.Text = row\["Class"\].ToString();
        node.Value = row\["ClassId"\].ToString();
        node.NavigateUrl = "UpdateClass.aspx?classId="+node.Value;
        GenerateSemesters(node,int.Parse(row\["ClassId"\].ToString()));
        tree1.Nodes.Add(node);
    }
}

private void GenerateSemesters(TreeNode node,int classid)
{
 Semester semester=new Semester();
 DataSet ds = semester.GetAllSemesters(classid);
    TreeNode childenode;
    foreach (DataRow row in ds.Tables\[0\].Rows)
    {
        childenode = new TreeNode();
        childenode.Text = row\["SemesterName"\].ToString();
        childenode.Value = row\["SemesterId"\].ToString();
        childenode.NavigateUrl = "Updatesemester.aspx?semesterId=" + childenode.Value;
        
       
        node.ChildNodes.Add(childenode);
    }
}

i forget to minsion that is the best way for filling treeview is recursively !

modified on Monday, March 29, 2010 4:46 AM

[Praveen Raghuvanshi]

Hope this helps http://www.c-sharpcorner.com/uploadfile/scottlysle/treeviewbasics04152007195731pm/treeviewbasics.aspx

Praveen Raghuvanshi Software Engineer, India.