OBOUT - ASP.NET ComboBox - TreeView inside the ComboBox

ASP.NET ComboBox - TreeView inside the ComboBox

The items of the ComboBox can be customized using templates. You can embed any content inside an item template, including HTML markup and ASP.NET server controls (any control from the Obout suite may be added to a template).

In order to set up an item template, use the ItemTemplate property of the ComboBox. To extract data from the data item, use the Eval method which expects as a parameter the name of the data field from which to load the data.

This example showcases the use of the Obout TreeView control inside the ComboBox. The end user is able to select a product from the tree (product categories are not selectable).

The ob_OnNodeSelect client-side event of the TreeView is used to detect when a node from the tree is selected. Inside the event handler for this event, some of the client-side methods of the ComboBox (setText, setValue, close) are used to set its text / value and to close the drop down menu.

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