Treeview(every next number should be child of Previous number

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I have a stack named mystack,in mystack i push four numbers(5,2,1,0) and when i pop mystack it ofcoursly show(0,1,2,5) now i want to make treeview in such way that every next number should be child of previous number like this

0
1
2
5

kindly help me thanks in advance

Posted 20-Oct-11 1:17am

bilawal121

Updated 20-Oct-11 1:22am

v3

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lukeer · Answer 1 · 2011-10-20T01:35:00

It's better to say in code than explaining:

C#

class Form1
{
    // Variable to remember last used TreeNode
    TreeNode lastUsedTreeNode = null;

    private AddNewNode(int newNumber)
    {
        // Create the newly to append TreeNode
        TreeNode newTreeNode = new TreeNode(newNumber.ToString());

        if(lastUsedTreeNode == null)
        // Append node to TreeView as root
        {
            treeView1.Nodes.Add(newTreeNode);
        }
        else
        // Append to last used TreeNode
        {
            lastUsedTreeNode.Nodes.Add(newTreeNode);
        }

        // Remember last used node for next time
        lastUsedTreeNode = newTreeNode;
    }
}

BobJanova · Answer 2 · 2011-10-20T01:40:00

Solution 2

Pseudo:

TreeNode parent = null, node;
int value;
while(stack.Count > 0){
 node = new TreeNode(stack.Pop().ToString());
 parent.Nodes.Add(node);
 parent = node;
}

i.e. keep a reference to the previous node, and each step, add the current node to it and update it to be the node you just added.

edit: updated to be a bit more like real code (how to add a node as a child of another updated)

Posted 20-Oct-11 1:40am

BobJanova

Updated 20-Oct-11 4:52am

v2

Comments

bilawal121 20-Oct-11 8:20am

It gives an error of "Property or indexer 'System.Windows.Forms.TreeNode.Parent' cannot be assigned to -- it is read only

how i remove this?????

bilawal121 20-Oct-11 8:33am

it only adds the node
like this
0
1
2
5

BobJanova 20-Oct-11 8:52am

It's pseudocode, you can look up how you make a tree node a child of another just as well as I can.

ed - seems it's parent.Nodes.Add(node)

Mantu Singh · Answer 3 · 2011-10-20T03:47:00

C#

root
  1       treeView1.Nodes[0].Nodes.Add(1);//to add under root root is already added
     
     2      treeView1.Nodes[0].Nodes[0].Nodes.Add(2);//add under 1
     

         3   treeView1.Nodes[0].Nodes[0].Nodes[0].Nodes.Add(3);//add under 2

Spent lot of time on this but to add node in the hierarchy as you want above is the way I think if you know the depth up to which nodes are to be added it would be better;

@BobJanova this is how you make a tree node a child of another;
pls keep trying to this dynamically without any limit on depth
Eg:-

C#

if(treeView1.Nodes.Count==1)
{
treeView1.Nodes[0].Nodes.Add(1);
}

We need to find how for next node the code changes to treeView1.Nodes[0].Nodes[0].Nodes.Add(2);

Best of luck.........

Treeview(every next number should be child of Previous number

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