ToolTip is gone after postback

[Udi]

Hello,

I have a treeview in a combobox.
When i select a node, the node's text appears in the combobox input field.
In additional i set node's text as a tooltip.

1. Why the first line in the next code snippest doesn't work? (No tooltip appears)

//This line doesn't work for some reason that i don't know.
//comboBox.ToolTip = args.get_node().get_text();

//This line work's perfect.
comboBox._element.title = args.get_node().get_text();

2. I added an asp button to the page, after i click the button there is a postback that causes to the tooltip to disapear.
    How can i persist the tooltip?

Thanks,
Oren

[Cori]

Hello Oren,

1. That line doesn't work because there is no property called ToolTip for the RadComboBox on the client-side.
2. To persist the tooltip after the button is clicked, I would suggest setting the ToolTip property of the RadComboBox in the button's click event. So it remains there after the postback.

I hope that helps.

[Udi]

Hi Cori,

1. I have a property named ToolTip for combobox control in the client side.
2. I wouldn't like to set the tooltip in the button click event handler.
    I would like to set it in the treeview "OnClientNodeClicking" event handler after i  click on a node:

function nodeClicking(sender, args)
 {
    var comboBox = $find("<%= combo.ClientID %>");
    var node = args.get_node()
    comboBox.set_text(node.get_text());
    comboBox.trackChanges();
    comboBox.get_items().getItem(0).set_text(node.get_text());
    comboBox.commitChanges();
    comboBox._element.title = args.get_node().get_text();
    comboBox.hideDropDown();
 }

Is it the only way?
I'm looking for another solution,

[Dimitar Terziev]

Hi Oren,

In order to set ToolTip on nodeClicking event you could use the following code:

function nodeClicking(sender, args)
{
    var comboBox = $find("<%= RadComboBox1.ClientID %>");


    var node = args.get_node()

    comboBox.set_text(node.get_text());

    comboBox.trackChanges();
    comboBox.get_items().getItem(0).set_text(node.get_text());

    comboBox.commitChanges();

    comboBox.hideDropDown();
    comboBox.get_element().title = args.get_node().get_text();
}

Please note that this ToolTip will not persist over a postback, that's why you should use the following code in the OnClientLoad event of the ComboBox  in order to have the ToolTip after a PostBack:

function comboLoad(sender, args) {
    var treeview = sender.get_items().getItem(0).findControl("RadTreeView1");
    if(treeview.get_selectedNode() != null)
        sender.get_element().title = sender.get_text();
}

All the best,
Dimitar Terziev
the Telerik team