how the childnodes under the selected parent node will be selected automatically...

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Hi all...
I have the treeview in win form which is dynamically loaded. In this treeview, I will get checkboxes along with each node...
Now, if i selected the parent node then the childnodes under the selected nodes should also be selected.
How to write code for this. Please suggest me.
Thank you.

[Removed unneeded pre tags]

Posted 28-Sep-10 2:37am

Ramesh Jallepalli

Updated 28-Sep-10 3:08am

Toli Cuturicu

v2

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aayu · Answer 1 · 2010-09-28T02:43:00

C#

private void addParentNode_Click(object sender, EventArgs e) {
  treeView2.BeginUpdate();
  //treeView2.Nodes.Clear();
  string yourParentNode;
  yourParentNode = textBox1.Text.Trim();
  treeView2.Nodes.Add(yourParentNode);
  treeView2.EndUpdate();
}
private void addChildNode_Click(object sender, EventArgs e) {
  if (treeView2.SelectedNode != null) {
    string yourChildNode;
    yourChildNode = textBox1.Text.Trim();
    treeView2.SelectedNode.Nodes.Add(yourChildNode);
    treeView2.ExpandAll();
  }
}

private void addChildNode_Click(object sender, EventArgs e) {
  var childNode = textBox1.Text.Trim();
  if (!string.IsNullOrEmpty(childNode)) {
    TreeNode parentNode = treeView2.SelectedNode ?? treeView2.Nodes[0];
    if (parentNode != null) {
      parentNode.Nodes.Add(childNode);
      treeView2.ExpandAll();
    }
  }

}

Thanks & Regard Aarti.Thakkar (nemo)
Do not Forget to Vote as Answer/Helpful, please. It encourages us to help you...:thumbsup::rose:

Ramesh Jallepalli · Answer 2 · 2010-09-28T19:44:00

hi...

I wrote the code for this as below but some logic is missed. How to add that logic please let me know.. or you can give me your own code

-------------------------------------------------

Boolean bChildTrigger = true;
       Boolean bParentTrigger = true;

       private void trView_AfterCheck(object sender, TreeViewEventArgs e)
       {
         
           if (bChildTrigger)
           {
               CheckAllChildren(e.Node, e.Node.Checked);
           }
           if (bParentTrigger)
           {
               CheckMyParent(e.Node, e.Node.Checked);
           }

       }

       void CheckAllChildren(TreeNode tn, Boolean bCheck)
       {
           bParentTrigger = false;
           foreach (TreeNode ctn in tn.Nodes)
           {
               bChildTrigger = false;
               ctn.Checked = bCheck;
               bChildTrigger = true;

               CheckAllChildren(ctn, bCheck);
           }
           bParentTrigger = true;
       }

                void CheckMyParent(TreeNode tn, Boolean bCheck)
                {
                    if (tn == null) return;
                    if (tn.Parent == null) return;

                    bChildTrigger = false;
                    bParentTrigger = false;
                    tn.Parent.Checked = bCheck;
                    CheckMyParent(tn.Parent, bCheck);
                    bParentTrigger = true;
                    bChildTrigger = true;
                }
----------------------------------------------------------------
<pre>
 when I selected the parent node, automatically the child nodes are selected and the root node is also selected. But the problem is when I deselect the any one of the selected child nodes then the Parent node and Root node are also getting deselected state even some child nodes are already in selected state.
please solve this problem

thank you

how the childnodes under the selected parent node will be selected automatically...

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