How Do I Select Multiple Nodes At A Time From Treeview Control Using C# And Visual Studio 2013

Question

0.00/5 (No votes)

See more:

VS2013

i want to select the multiple nodes from a treeview and want its text to be present in msgbox or console . but i am not able to do so. can anybody please help me.?

Added from answer below

C#

//Create the tree from the database
        private void CreateTree(TreeNode n, int hdrID)
        {
            System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(@"Data Source=(LocalDB)\v11.0;AttachDbFilename=D:\Builder.mdf;MultipleActiveResultSets = True;Integrated Security=True;Connect Timeout=30");
            con.Open();
            SqlCommand cmd = new SqlCommand("SELECT Id,Title FROM Presentation WHERE Pid=" + hdrID, con);
            SqlDataReader rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                TreeNode t = new TreeNode(rdr["Title"].ToString());
                CreateTree(t, Convert.ToInt16(rdr["Id"].ToString()));
                if (n == null)
                {
                    treeView1.Nodes.Add(t);
                    //t.ImageIndex = 0;
                }
                else
                {
                    n.Nodes.Add(t);
                }
            }
            rdr.Close();
        }

Posted 24-Aug-14 23:28pm

nits23

Updated 28-Aug-14 4:03am

Herman<T>.Instance

v2

Add a Solution

Comments

_Amy 25-Aug-14 5:30am

So? Where is the error? Can I see your code?

nits23 25-Aug-14 7:24am

_Amy i want to select multiple field at once in treeview , at a time i am able to select only a single node. can you help me with this?

SteveyJDay 25-Aug-14 9:19am

You need to post your current code. We can't see your screen and we aren't going to work up a solution from scratch.

nits23 26-Aug-14 1:30am

@jaredSanow and @_Amy sorry for the inconvenience, Here are the code for creating the tree structure from the database in the treeview control of windows forms and my table contains Id , Title , Pid , DescId attributes. and yes i am calling this method from inside a button click event like this only:- CreateTree(null, 0);

Property of treeview i already made checkboxes==true so by this when tree populate they came together checkboxe and node of the treeview.

//Create the tree from the database
private void CreateTree(TreeNode n, int hdrID)
{
System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(@"Data Source=(LocalDB)\v11.0;AttachDbFilename=D:\Builder.mdf;MultipleActiveResultSets = True;Integrated Security=True;Connect Timeout=30");
con.Open();
SqlCommand cmd = new SqlCommand("SELECT Id,Title FROM Presentation WHERE Pid=" + hdrID, con);
SqlDataReader rdr = cmd.ExecuteReader();
while (rdr.Read())
{
TreeNode t = new TreeNode(rdr["Title"].ToString());
CreateTree(t, Convert.ToInt16(rdr["Id"].ToString()));
if (n == null)
{
treeView1.Nodes.Add(t);
//t.ImageIndex = 0;
}
else
{
n.Nodes.Add(t);
}
}
rdr.Close();
}

2 solutions

Solution 2

If you don't want checkboxes next to each item, this may be of use to you.

http://www.codeproject.com/Articles/8006/Multi-select-Treeview-control-v

Posted 25-Aug-14 11:26am

j snooze

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)

nits23 · Accepted Answer · 2014-08-28T01:42:00

C#

private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            if (e.Action != TreeViewAction.Unknown)
            {
                 if (busy) return;
                busy = true;
                try
                {
                    TreeNode _node = e.Node;
                    
                    checkNodes(e.Node, e.Node.Checked);
                    if (e.Node.Checked)
                    {
                        MessageBox.Show(e.Node.Text);
                    }
                }
                
               
                finally
                {
                    busy = false;
                }
            }

        }

C#

private void checkNodes(TreeNode node, bool check)
        {
            foreach (TreeNode child in node.Nodes)
            {
                if (child.Checked == true)
                {
                    MessageBox.Show(child.Text);
                } 
                //MessageBox.Show(child.Text);
                checkNodes(child, check);
            }
        }