c# - How to add/remove child nodes from textbox to the selected node in combobox -

• i'm adding items combobox treeview @ run-time.

the code goes follows:

 private void form1_load(object sender, eventargs e)     {         combobox1.selectedindex = 0;          string[] items = new string[combobox1.items.count];          (int = 0; < combobox1.items.count; i++)         {             items[i] = combobox1.items[i].tostring();             treeview1.nodes.add(items[i]);         }     } 

now want add child node selected node in combobox.

when add child root node - 2 goes @ bottom, displayed in picture above.

 private void addchildnodebutton_click(object sender, eventargs e)     {         treeview1.nodes.add(combobox1.text, textbox1.text);     } 

to add selected note, use selectednode method, , instead of using combox1 dropdown, can select node in tree, below:

private void addchildnodebutton_click(object sender, eventargs e) {      treeview1.selectednode.nodes.add(textbox1.text) } 

if want use combobox, little slower since first have search treeview using text

       treenode[] tns=treeview1.nodes.find(combobox1.text, true);         if (tns.length > 0)         {              treeview1.selectednode = tns[0];             treeview1.selectednode.nodes.add(textbox1.text)         }