Create and Display Tree

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ASP.NET

Hi

I want to know how to create tree and display in same aspx page

Posted 29-Oct-10 1:26am

Mehsud

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Sunasara Imdadhusen 29-Oct-10 7:53am

Please explain what you want? and where are you stuck.

Mohd Wasif 29-Oct-10 9:01am

What kind of tree u r taking about.
Binary Tree,Tree View or something else.

Mehsud 30-Oct-10 1:10am

it s a Treeview. I want to add nodes and links dynamically in treeview. so i need coding how to create and display

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S.M.Naresh · Answer 1 · 2010-11-10T19:41:00

Hi Mehsud,
It is easy to create nodes and adding them dynamically in TreeView.
First of all you need to add(Drag and Drop) a TreeView(say trvDepartment)control to the aspx page to which you add childnodes.

Assume that you have an Arraylist that has Employees Names which are added as Childnodes to Department Tree(trvDepartment).
The code looks like this

TreeNode tnEmp = null;
ArrayList arrEmp = new ArrayList();
arrEmp.Add("E1");
arrEmp.Add("E2");
arrEmp.Add("E3");
foreach(string Ename in arrEmp)
 {
tnEmp = new TreeNode();
tnEmp.Text = Ename;
trvDepartment.ChildNodes.Add(tnEmp);
trvDepartment.CollapseAll();
}

This way you can add Nodes to tree.
You can get the data into ArrayList from Database directly and create childnodes according to the rows returned.
Hope this helps... :)