SelectedIndexChanged
The SelectedIndexChanged event occurs when the user selects a new item from the drop-down list in the RadComboBox.
To use the SelectedIndexChanged, set the AutoPostBack property to True. Otherwise, the SelectedIndexChanged event will not fire.
The SelectedIndexChanged event handler receives two arguments:
-
The RadComboBox that is loading items. This argument is of type object but can be cast to the RadComboBox type.
-
An EventArgs object. This object has the following properties for identifying what has changed:
-
Text is the text of the item that was just selected.
-
Value is the value of the item that was just selected.
-
OldText is the text of the item that was previously selected
-
OldValue is the value of the item that was previously selected
-
The following examples demonstrate how to use the SelectedIndexChanged event handler to respond in server-side code when the user changes the current selection:
<telerik:radcombobox
id="RadComboBox1"
runat="server"
autopostback="True"
onselectedindexchanged="RadComboBox1_SelectedIndexChanged">
</telerik:radcombobox>
protected void RadComboBox1_SelectedIndexChanged(object o, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e)
{
Label1.Text = "You selected " + e.Text + " item";
}