Dropping

The Dropping server event fires just before a RadListBoxItem is dropped over an HTML element which has id attribute set. The event can be cancelled. It is not fired when you drop an item over another RadListBox/RadListBoxItem.

The event handler receives two parameters:

1. The instance of the listbox firing the event

2. An event arguments parameter containing the following properties:

• HtmlElementID - the ID of the target element which the item is dropped over.

• Cancel - set it to True to cancel the event and prevent the dropping

• SourceDragItems - a collection of RadListBoxItems which are about to be dropped

C#

protected void RadListBox_Dropping(object sender, RadListBoxDroppedEventArgs e)
{
	if (TextBox1.ClientID != e.HtmlElementID)
	{
		e.Cancel = true;
	}
} 

VB.NET

Protected Sub RadListBox_Dropping(sender As Object, e As RadListBoxDroppedEventArgs)
	If TextBox1.ClientID <> e.HtmlElementID Then
		e.Cancel = True
	End If
End Sub 

See Also

• Online Demo

• Drag and Drop

• Dropped