I want to show structure of tree view

Question

0.00/5 (No votes)

See more:

product
--RawProduct
---rawMaterial
----rawItem
--Raw Material
I want this type of tree view

my code is bellow

C#

conn.Open();
string q = "select * from View_BOMMDP";
DataTable union = new DataTable();
OdbcDataAdapter UnionQuery = new OdbcDataAdapter("select distinct ProductName as Node ,ProductDependency as ParentNode  from View_BOMMaster union select  RawMaterialName as Node,ProductNameDependancy as ParentNode from View_BOMDetails", conn);
OdbcCommand cmd = new OdbcCommand(q, conn);
DataTable dt = new DataTable();
UnionQuery.Fill(union);
union.AcceptChanges();

TreeNode node;

C#

OdbcDataReader dr = cmd.ExecuteReader();
for (int i = 0; i < union.Rows.Count; i++)
{
    if (union.Rows[i]["ParentNode"].ToString() == "")
    {

        node = new TreeNode(Convert.ToString(union.Rows[i]["Node"]));
        string pName = Convert.ToString(union.Rows[i]["Node"]);
        
        for (int i1 = 0; i1 < union.Rows.Count; i1++)
        {
            if (union.Rows[i1]["ParentNode"].ToString() ==pName)
            {
                node.Nodes.Add(Convert.ToString(union.Rows[i1]["Node"]));
                string cNode = Convert.ToString(union.Rows[i1]["Node"]);

                //for (int i11 = 0; i11 < union.Rows.Count; i11++)
                //{
                //    if (union.Rows[i11]["ParentNode"].ToString() == cNode)
                //    {
                //        node.Nodes.Add(Convert.ToString(union.Rows[i11]["Node"]));
                //        TreeViewProduct.Nodes.Add(cch);
                //    }
                //}

               
            }
        }
        TreeViewProduct.Nodes.Add(node);
    }
}

Posted 23-May-14 1:40am

Member 10271164

Updated 23-May-14 1:53am

DamithSL

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

DamithSL · Answer 1 · 2014-05-23T02:03:00

C#

AddNodes(TreeViewProduct.Nodes, "", union);

you need recursive method like below, not tested :-)

C#

private void AddNodes(TreeNodeCollection nodes, int parentNode, System.Data.DataTable dt)
{
    string filterExp = string.Format("ParentNode='{0}'", parentNode);
    foreach (System.Data.DataRow r in dt.Select(filterExp))
    {
        TreeNode item = new TreeNode()
        {
            Text = r[0].ToString(),
            Value = r[0].ToString()
        };
        this.AddNodes(item.ChildNodes, int.Parse(r[1].ToString()), dt);
        nodes.Add(item);
    }
}