Hello expert, I have a treeview with checkboxes, how to get the key of the node of the treeview when

The nodecheck event returns the node object parameter.

Then, the node you want, there you have it.

I'm sorry, I'm C direction for your reference.

The TreeNodeCheckChanged of the server control treeview does not automatically postback the solution.

To control event postbacks via scripts, JS needs to add a method:

This method can support FF and IE, if you don't pass E then FF will not be supported.

Added onclick to the page tree control to send event:

Imperfect methods of acquisition.

protected void tree1_treenodecheckchanged(object sender, treenodeeventargs e)

treeview tree = sender as treeview;

if(tree != null)

string tag = ;It can only be obtained by selecting a collection of tree nodes.

Another: To achieve the purpose of precise positioning, you can use the onselectednodechanged event to get it.

Because the selectednode is unique, simply set the selection effect and then change the selectednode.

checkedattribute to true, so as to obtain the ID of the node

Hope it helps.

arraylist list=new arraylist();Stores tick node data.

foreach (treenode tn in

Read the data you want from the list. There is too little information, so give more information to know what you want to achieve.

= true;

This is an assignment.

Just determine whether the checked is true or not.

Is treeview a value that reads from the bound database? Determine whether the checkboxes in the treeview are selected, and if they are selected, you will get the node value of the checkboxes! If it's manually bound data, it's not read from the database, it's also a logic!

It's been sent to you, it's very detailed, it took me 2 days to get it out, and every step is annotated.

void getselectedtreenode(treenodecollection nodes,listselectednodes)

getselectedtreenode(node,selectednodes);}

Finally, in the selectednodes are all the selected treenodes, if there are other needs, just change the **.

Winform's TreeView control is a bit different from that, you can set the checkboxes property of the control to true to display checkboxes on all nodes. If you still have any questions, please contact us or hi

If it is set during design, select DataGridViewCheckboxColumn for the columnType property when adding a column

If it's Add a column, it's as follows:

datagridviewcolumn mycol = new datagridviewcheckboxcolumn();

Add the tag attribute value to the node when binding.

Department of Management").tag = treeid;

Get the treeid

private void treeview1_afterselect(object sender, treevieweventargs e)

Which language are you, JS or server-side control.